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Small tools. Less busywork.
Free tools for everyday tasks, right in your browser. Your files and data stay on your device.
Find a tool, or browse a category below.
All-in-one workspace
QR Studio
Create, customize, batch, print, scan and inspect codes in one private workspace.
Open workspaceQR Code Generator
A small code. So many possibilities. Create and download QR codes in seconds.
Open toolQR Code Scanner
Find out what’s inside a QR code. Scan an image or use your camera, privately.
Open toolQR Code with Logo
Put your logo at the center of a QR code, with a built-in scan check before download.
Open toolBatch QR Generator
One list, many QR codes. Create up to 100 codes and download a ZIP in one go.
Open toolQR Print Sheets
Put your codes on paper. Create printable QR grids with copies, captions and cut guides.
Open toolBarcode Generator
Create crisp Code 128 or EAN-13 barcodes, with check-digit validation and PNG/SVG downloads.
Open toolBarcode Scanner
Read a barcode from an image or camera. Inspect the format and copy its content privately.
Open toolBarcode Check Digit Calculator
Calculate or validate EAN, UPC and GTIN check digits. Keep leading zeros and inspect the arithmetic.
Open toolCalendar QR Generator
Share an event with a QR code. Download PNG, SVG or an ICS calendar file privately.
Open toolQR Contents Inspector
Explain the fields inside a QR code. Inspect pasted text, an image or your camera without opening links.
Open toolAll-in-one workspace
Text Studio
Clean, compare and transform text, practise Morse and explore educational ciphers.
Open workspaceWord & Character Counter
Live word and character counts, paragraph totals and estimated reading time. Your text stays private.
Open toolCase Converter
Change text to uppercase, lowercase, title case or sentence case. Copy or download the result.
Open toolText Diff Checker
Compare original and revised text. Highlight additions, removals and spacing changes privately.
Open toolRemove Duplicate Lines
Remove repeated lines, keep their original order, and optionally ignore case or clean blank lines.
Open toolSort Lines
Sort a list A–Z, Z–A or naturally by embedded numbers. Keep duplicates and clean spacing when needed.
Open toolAI Text Detector
An experimental English style score with clear limitations. Local analysis, not proof of AI authorship.
Open toolText to Slug
Turn titles into URL slugs with Unicode or ASCII letters, hyphens or underscores, and encoded output.
Open toolLorem Ipsum Generator
Generate placeholder words, sentences or paragraphs for layouts. Copy or download without an account.
Open toolText Encoder/Decoder
Encode or decode Base64, URL components and HTML entities. Unicode text stays on your device.
Open toolWhitespace Cleaner
Trim line edges, collapse spaces and tabs, and clean blank lines while keeping the original text.
Open toolLine Numbering
Add custom line numbers, skip blanks and choose separators. Copy or download the numbered text.
Open toolFind and Replace
Find literal text and replace the first or all matches, with case and whole-word options.
Open toolRegex Replace
Replace text with JavaScript patterns and capture groups. Cancellable local processing with a time limit.
Open toolExtract Emails and URLs
Pull email addresses and web links into separate lists, with exact duplicate removal and TXT exports.
Open toolUnicode Inspector
Explore code points, Unicode categories, UTF-16 escapes and UTF-8 bytes, with special-character flags.
Open toolInvisible Character Finder
Locate hidden formatting and unusual spaces, then preview optional cleanup without changing the original.
Open toolPunctuation Normalizer
Convert curly quotes, ellipses and selected dashes or symbols, with a preview and substitution counts.
Open toolReading Time Estimator
Estimate reading and speaking time with custom speeds, optional pauses and a private summary.
Open toolAll-in-one workspace
Developer Studio
Format and inspect code/data, plus supplied HTML, social metadata, robots and sitemaps.
Open workspaceJSON Formatter / Validator
Beautify, minify and validate JSON locally while preserving large numbers, escapes and member order.
Open toolJSON to CSV
Turn JSON records into CSV or TSV with a table preview, nested-value handling and optional formula protection.
Open toolCSV to JSON
Convert CSV or TSV to JSON records, with quoted multiline cells, header options and string-preserving output.
Open toolYAML to JSON
Convert YAML 1.2 to JSON locally, with exact integer values, clear errors, cancellation and JSON downloads.
Open toolJSON to YAML
Convert JSON into readable YAML, preserving number spellings and quoted string values. Copy or download locally.
Open toolJWT Decoder
Inspect JWT header, payload and timing claims locally. Decode only: signatures and claims remain unverified.
Open toolUUID Generator
Generate UUID v4 batches locally, with lowercase/uppercase, line lists, comma lists and JSON output.
Open toolHash Generator
Hash UTF-8 text locally with SHA-256/384/512 or legacy SHA-1/MD5. Copy hexadecimal or Base64 output.
Open toolURL Encoder / Decoder
Encode or decode URL components, whole URIs and form values, with explicit plus-sign and reserved-character rules.
Open toolHTML / CSS / JavaScript Minifier
Minify HTML, CSS or JavaScript in a local worker, with conservative options, byte totals and downloads.
Open toolRegex Tester
Test JavaScript patterns with match highlighting, capture groups and downloadable JSON reports.
Open toolTimestamp Converter
Convert Unix seconds, milliseconds and ISO dates, with UTC and browser local time.
Open toolCron Expression Explainer
Explain five-field cron schedules, inspect fields and preview upcoming UTC matches.
Open toolColor Converter
Convert HEX, RGB and HSL with alpha, a color picker and a transparency preview.
Open toolCode Diff Checker
Compare code versions by lines or word segments, with numbered changes and a private report.
Open toolXML Formatter
Format and validate XML with careful whitespace handling and local UTF-8 downloads.
Open toolTOML to JSON
Convert TOML to JSON locally with exact integer output and explicit date/time handling.
Open toolJSON to TOML
Convert JSON objects to TOML with table layouts, exact number tokens and explicit compatibility checks.
Open toolJSON Schema Validator
Validate JSON against a strict Draft-07 subset with local references and error-path reports.
Open toolJSONPath Tester
Test JSONPath queries with filters, slices, matched values and normalized paths locally.
Open toolQuery String Parser
Decode query parameters with repeated-key handling, JSON output and re-encoding.
Open toolHTTP Status Reference
Search HTTP status codes, response classes and official specification links.
Open toolByte Size Converter
Convert bits, bytes, KB/MB/GB and KiB/MiB/GiB with exact results.
Open toolString Escaper and Unescaper
Escape or unescape JSON and JavaScript strings, quotes and Unicode locally.
Open toolSQL Formatter
Format SQL locally with dialect selection, indentation and keyword case controls.
Open toolEnvironment File Formatter
Format .env spacing, check duplicate keys and sort assignment groups locally.
Open toolAll-in-one workspace
Photo Editor
Edit photos or switch to blank-canvas painting, transparent signatures and pixel artwork.
Open workspaceImage Resizer
Resize images by pixels or percentage with aspect-ratio control and local downloads.
Open toolBatch Image Resizer
Resize up to 20 images by maximum dimensions or percentage and download a ZIP.
Open toolImage Cropper
Crop images with a draggable selection, ratio presets and exact pixel controls.
Open toolImage Compressor
Adjust image quality, optionally reduce dimensions and compare actual file sizes.
Open toolImage Converter
Convert PNG, JPEG and WebP images; AVIF export when your browser supports it.
Open toolImage to Base64
Turn original image bytes into a data URL or raw Base64 text.
Open toolBase64 to Image
Decode Base64 or an image data URL, preview and download the original image.
Open toolImage Rotator / Flipper
Rotate images in quarter turns, mirror either axis and download locally.
Open toolImage Watermark
Add text or logo watermarks with adjustable position, size and opacity.
Open toolImage to PDF
Combine images into a PDF with page order, paper size and margin controls.
Open toolPDF to Image
Turn PDF pages into PNG or JPEG images with previews and ZIP download.
Open toolFavicon Generator
Create a multi-size ICO, PNG icons and a website-ready icon ZIP.
Open toolImage Color Picker
Pick original-resolution pixel colors and extract an approximate dominant palette.
Open toolEXIF Viewer
Inspect camera tags, timestamps, orientation and stored GPS metadata privately.
Open toolImage Metadata Remover
Remove embedded camera, GPS and text tags with a fresh local image export.
Open toolImage Comparison Slider
Slide between before and after images and save a comparison PNG locally.
Open toolImage Collage Maker
Combine photos into a custom grid and download a private collage.
Open toolContact Sheet Generator
Create labeled thumbnail sheets with custom columns, spacing and titles.
Open toolImage Blur / Pixelation
Blur or pixelate a whole image or selected rectangular area locally.
Open toolGrayscale / Threshold
Create grayscale or black-and-white images with adjustable sliders.
Open toolRounded Corners
Round selected corners with a radius slider and transparent or colored backgrounds.
Open toolAspect Ratio Calculator
Calculate image proportions and linked dimensions with presets and a scale slider.
Open toolAll-in-one workspace
PDF Workspace
One PDF workspace: organize, merge, edit, convert and password-protect.
Open workspaceMerge PDF
Combine PDFs in your chosen order without uploading documents.
Open toolSplit PDF
Extract page ranges or split a PDF into individual pages and grouped parts.
Open toolRotate PDF
Rotate selected PDF pages with an angle slider and preserve document page order.
Open toolRemove PDF Pages
Remove selected pages with ranges, checkboxes and a clear keep-page summary.
Open toolReorder PDF Pages
Rearrange every page with move controls, reverse order and exact sequences.
Open toolPDF to Text
Extract PDF text with page selection, document previews and TXT download.
Open toolAdd Watermark to PDF
Add text watermarks with opacity, rotation, positioning and page previews.
Open toolPDF Page Numbering
Add custom header/footer page numbers with page selection and previews.
Open toolLock PDF
Protect PDFs with an opening password and local AES-256 encryption.
Open toolUnit Converter
Convert 53 units across length, mass, temperature, area, volume and speed.
Open toolNumber Base Converter
Convert signed whole numbers between binary, octal, decimal, hexadecimal and bases 2–36.
Open toolRoman Numeral Converter
Convert decimal integers to Roman numerals and validate Roman numerals back to numbers.
Open toolTime Zone Converter
Convert a local date and time between IANA time zones.
Open toolDuration Converter
Convert fixed durations between nanoseconds, seconds, minutes, hours, days and weeks.
Open toolFraction / Decimal / Percentage Converter
Convert fractions, mixed numbers, recurring decimals and percentages with exact fraction arithmetic.
Open toolScientific Notation Converter
Convert ordinary decimals and scientific notation into exact decimal, normalized scientific and engineering forms.
Open toolNumber to Words
Spell signed decimal numbers in English using US or British wording.
Open toolWords to Number
Turn conventional English number words into exact decimal numbers.
Open toolDecimal Hours Converter
Convert decimal hours and signed HH:MM:SS durations for time sheets and elapsed time.
Open toolFeet & Inches Converter
Convert mixed feet and fractional inches to metric lengths, or metric values to feet and inches.
Open toolPressure Converter
Convert absolute or gauge pressure with an explicit absolute reference.
Open toolEnergy Converter
Convert energy and work between joules, watt-hours, clearly labeled calorie definitions, International Table BTU, electronvolts and foot-pounds force.
Open toolPower Converter
Convert watts, kilowatts, BTU per hour and distinct mechanical, metric and electrical horsepower definitions.
Open toolAngle Converter
Convert signed angles between degrees, radians, gradians, turns, arcminutes, arcseconds and DMS.
Open toolFrequency / Period Converter
Convert frequency to period or scale Hz, kHz, MHz, GHz, cycle rates and time periods.
Open toolFuel Consumption Converter
Convert L/100 km, L/km, km/L and US or Imperial mpg.
Open toolForce Converter
Convert newtons, dynes, kilogram-force, pound-force, ounce-force and kips using explicit standard-gravity definitions.
Open toolTorque Converter
Convert moments of force between N·m, lbf·ft, lbf·in, kgf·m and related torque units.
Open toolDensity Converter
Convert mass density between metric, US liquid and Imperial units.
Open toolAcceleration Converter
Convert acceleration between m/s², ft/s², inches/s², Gal and standard-gravity units.
Open toolVolume Flow Converter
Convert actual volumetric flow between metric rates, cubic feet and US or Imperial gallons per minute.
Open toolMass Flow Converter
Convert mass flow between kg/s, kg/h, g/min, lb/h and metric, US or Imperial tons per hour.
Open toolTemperature Difference Converter
Convert temperature changes between Celsius, Fahrenheit, Kelvin and Rankine intervals.
Open toolSI Prefix Converter
Scale quantities across all 24 SI prefixes, from quetta to quecto, plus unprefixed units.
Open toolSurface Density Converter
Convert mass per area between gsm, kg/m², ounces per square yard and other explicit units.
Open toolViscosity Converter
Convert dynamic or kinematic viscosity units.
Open toolData Rate Converter
Convert 26 bit and byte rate units with explicit decimal and binary prefixes.
Open toolTransfer Time Converter
Estimate transfer time from file size, rate and optional bandwidth overhead.
Open toolTypography Unit Converter
Convert CSS typography units with explicit em, rem and percentage references.
Open toolDPI / Pixels / Print Size Converter
Calculate print size, image pixels or PPI with explicit dimensions and density.
Open toolDecimal / DMS Coordinate Converter
Convert latitude/longitude between decimal degrees and DMS with sign validation.
Open toolCSS Time Converter
Convert s, ms and frame counts with explicit FPS and CSS timing context.
Open toolCooking Volume Converter
Convert named cups, spoons and liquid measures with exact fractions and recipe scaling.
Open toolMass / Volume with Density
Convert mass and volume using a required, user-supplied material density.
Open toolPace / Speed Converter
Convert speed and pace, including min/km and min/mile clock notation.
Open toolCurrency Converter · Manual Rates
Convert currencies using your own dated rate, with explicit direction and rounding.
Open toolAll-in-one workspace
Conversion Workspace
All published converters in one workspace, with search, grouped navigation and explicit compatible handoffs.
Open workspacePercentage Calculator
Calculate percentages, relative change, increases, decreases and original values.
Open toolBMI Calculator
Calculate adult BMI with metric/US units, clear screening categories and private inputs.
Open toolLoan / Mortgage Calculator
Plan monthly payments, extra principal and interest savings with a full payment schedule.
Open toolCompound Interest Calculator
Project savings growth with regular contributions, explicit timing and a year-by-year balance table.
Open toolAge Calculator
Calculate calendar age, completed months, elapsed days and the next birthday from explicit dates.
Open toolDate Difference Calculator
Count signed elapsed or inclusive days between two calendar dates, with clear endpoint rules.
Open toolTip / Bill Split Calculator
Calculate a tip and equal bill split, with optional upward rounding and a visible collection difference.
Open toolDiscount Calculator
Compare stacked or additive discounts, final price and total savings without hidden assumptions.
Open toolGST / VAT Calculator
Add or extract tax using your supplied rate, with separate net, tax and gross amounts.
Open toolWeighted Average Calculator
Calculate an exact weighted mean from value/weight pairs and review each row’s contribution.
Open toolBreak Even Calculator
Find the sales volume needed to cover fixed costs, with whole-unit rounding and contribution margin.
Open toolMarkup / Margin Calculator
Calculate selling price from cost and a target markup or margin, with both percentages shown.
Open toolPrice per Unit Calculator
Compare two package prices using compatible quantities and rank them before rounding.
Open toolFuel Cost Calculator
Estimate journey fuel and cost with explicit distance, consumption and fuel-price units.
Open toolElectricity Cost Calculator
Estimate energy consumption and cost from power, operating time, duty cycle and your own tariff.
Open toolScale Calculator
Convert drawing and real-world lengths with an explicit drawing:real ratio and compatible units.
Open toolAll-in-one workspace
Calculator Workspace
All 20 calculators in one workspace: money, dates, comparisons and everyday estimates.
Open workspacePassword Generator
Generate hidden-by-default passwords with secure browser randomness, configurable character groups and no saved history.
Open toolPassword Strength Checker
Estimate password guessability locally with the self-hosted zxcvbn pattern model. No passwords or breach queries leave your browser.
Open toolRandom Number Generator
Draw secure random integers over exact inclusive bounds, with optional unique values and sorting—even beyond JavaScript’s safe-integer range.
Open toolEncrypt / Decrypt Text
Encrypt text into an authenticated AES-256-GCM package or decrypt a compatible package using a passphrase, entirely in your browser.
Open toolFile Hash Checker
Calculate SHA-256, SHA-384 or SHA-512 from exact file bytes, then compare an expected digest with visible file-selection status.
Open toolAll-in-one workspace
Security Workspace
All six local security tools in one workspace, with isolated inputs and no automatic secret transfers.
Open workspaceCSS Gradient Generator
Design gradients with live preview, editable color stops, opacity and ready-to-copy CSS.
Open toolBox Shadow Generator
Build layered CSS box shadows with a live preview, inset controls, blur, spread, opacity and accessible layer ordering.
Open toolBorder Radius Generator
Design circular or elliptical CSS corners with individual radii, linked controls, percent/pixel units and live overlap scaling feedback.
Open toolColor Palette Generator
Create color harmonies from a seed, tune saturation and lightness, lock individual colors and export a reusable CSS variable palette.
Open toolContrast Checker
Check WCAG 2.x contrast ratios for text and color pairs, with alpha compositing, an explicit canvas and unrounded pass/fail thresholds.
Open toolCSS Beautifier / Formatter
Beautify CSS with indentation controls or minify with CSSO. Local worker processing and CSS export.
Open toolAll-in-one workspace
Design Workspace
All nine design tools together: live CSS effects, colors, contrast and code, using the original standalone controls.
Open workspaceDXF Viewer
View DXF drawings with zoom, pan, layer toggles and an honest supported-geometry report. No uploads.
Open toolDXF to SVG
Convert DXF layers to a scalable SVG with a real export preview.
Open toolDXF to PNG
Export DXF drawings as PNG images with layers, sizing and transparent backgrounds.
Open toolDXF to PDF
Create a one-page raster PDF from DXF with paper, layer and resolution controls.
Open toolSVG to DXF
Convert supported SVG shapes and Bézier paths to DXF outlines, with scale and preview.
Open toolImage to DXF
Trace image boundaries into DXF outlines with crop, threshold, cleanup and scale controls.
Open toolScanned PDF to DXF
Trace one PDF page into DXF outlines with thumbnails, crop, cleanup and page-based scale.
Open toolVector PDF to DXF
Extract supported PDF vector paths to DXF with page selection, scale and omission reports.
Open toolDXF Inspector
Inspect DXF counts, layers, units and bounds with preview and downloadable reports.
Open toolDXF Scale & Unit Converter
Convert units or resize 2D DXF geometry with export previews.
Open toolAll-in-one workspace
CAD Workspace
CAD tools in one workspace: inspect and convert drawings, trace, scale and view 3D models.
Open workspace3D Model Viewer
View meshes and point clouds with orbit, wireframe, object visibility and PNG snapshots.
Open toolSTL Inspector
Inspect STL dimensions, triangle counts and basic topology issues with a local 3D preview.
Open toolSTL ASCII / Binary Converter
Convert ASCII ↔ binary STL with source/output 3D previews, file-size comparison and rounding details.
Open tool3D Model Transform
Scale, rotate and reposition triangle meshes, with original/output previews and STL export.
Open tool3D Mesh Converter
Convert triangle meshes to STL, OBJ, PLY and OFF with actual output previews and local downloads.
Open tool3D Surface Area & Volume
Measure triangle area and qualified volume, with mesh checks, explicit units and a local 3D preview.
Open toolAll-in-one workspace
3D Workspace
One workspace to view, inspect, convert, transform and measure supported 3D models locally.
Open workspaceAudio Trimmer / Cutter
Cut audio with waveform selection, precise timing, playback and local WAV export.
Open toolAudio Splitter
Split audio by count, duration or draggable manual cuts. Preview parts and download WAV/ZIP.
Open toolAudio Joiner
Arrange clips with drag/keyboard ordering, optional crossfades and actual joined WAV preview.
Open toolVolume / Peak Normalize
Adjust gain or normalize sample peaks, with clipping prevention and actual WAV playback.
Open toolFade In / Fade Out
Position fade regions anywhere, adjust curves, seek during live playback and export WAV.
Open toolAudio Speed Changer
Adjust speed live, compare original playback and export an actual adjusted WAV.
Open toolTempo Changer
Change tempo with pitch preservation, live controls and private WAV export.
Open toolPitch Shifter
Shift pitch with semitone and cents controls, live preview and unchanged duration.
Open toolVibrato
Add live vibrato with rate, cents-depth and wet/dry controls, then export WAV.
Open toolTremolo
Create live volume pulses with rate, depth, mix and shape controls, then export WAV.
Open toolEqualizer / Audio Filters
Five-band live EQ, high/low/band-pass filters, response graph and actual WAV export.
Open toolEcho / Delay
Live delay, feedback, mix and trim with controlled echo tails and actual WAV export.
Open toolReverb
Live room, hall and plate ambience with decay, damping, mix and full-tail WAV export.
Open toolChorus
Live multi-voice chorus with modulation, delay, mix, presets and WAV export.
Open toolFlanger
Live flanger with short delay sweeps, bipolar feedback, wet polarity and WAV export.
Open toolPhaser
Sweep a bounded all-pass chain with linked stereo settings, stage choices, feedback, mix and output trim.
Open toolDistortion / Overdrive
Soft saturation, hard clipping and foldback shaping with drive, dry/wet blend and output trim.
Open toolAudio Compressor
Stereo-linked peak compression with threshold, ratio, soft knee, attack/release time constants, make-up gain and parallel blend.
Open toolAudio Limiter
Stereo-linked file-based lookahead limiting with input drive, release and a validated sample-peak ceiling.
Open toolBitcrusher
Signed bit-depth quantization and sample-hold character effects with dry/wet blend and output trim.
Open toolStereo Pan / Width
Adjust mono pan or stereo balance, mid/side width and output trim, with an explicit mono compatibility output.
Open toolAudio Reverser
Reverse the complete audio clip with synchronized channels, live audition, waveform seeking and actual WAV export.
Open toolAudio Channel Tools
Convert stereo to averaged mono, extract left or right, swap channels, duplicate mono to stereo and invert polarity locally.
Open toolAudio Converter
Convert browser-decodable audio into 16-bit, 24-bit or 32-bit float WAV, with sample-rate and channel choices.
Open toolAudio Recorder
Private microphone recording with pause/resume, input meter and actual WAV playback.
Open toolAudio Information
Inspect original WAV headers and decoded audio levels, duration, channels and statistics.
Open toolAll-in-one workspace
Audio Workspace
One workspace for all 30 audio tools, with live previews, recording and explicit WAV handoffs.
Open workspaceVideo Information
Inspect container and primary video/audio track details locally, with a source player and JSON/TXT reports.
Open toolVideo Player / Frame Capture
Play, seek and inspect a local video, then capture a decoded frame as a PNG with its actual frame timestamp.
Open toolVideo Trimmer
Select a range on the preview timeline and re-encode a shorter video with an actual exported preview.
Open toolExtract Audio from Video
Extract the primary audio track over a selected range into a playable 48 kHz, 16-bit PCM WAV.
Open toolVideo to GIF
Turn a short selected clip into a looping animated GIF with exact size, timing and frame-rate controls.
Open toolVideo Resizer / Compressor
Resize video with an explicit fit policy, frame rate and target bitrate, then compare the actual output size.
Open toolAll-in-one workspace
Video Workspace
All six video tools together, with source controls, actual export previews and explicit video handoffs.
Open workspaceSubtitle Editor
Edit SRT and WebVTT cues, inspect timing and preview plain-text captions over your local video.
Open toolSRT / VTT Converter
Convert SRT and WebVTT subtitles locally, with explicit warnings for unsupported styling and metadata.
Open toolSubtitle Timing Shifter
Move subtitle cues earlier or later with exact millisecond offsets and explicit zero-boundary handling.
Open toolSubtitle Speed / Frame Rate Adjuster
Correct subtitle timing with a duration multiplier or source-to-target frame rate ratio.
Open toolSubtitle Merge / Split
Combine two subtitle documents or split a timeline into two files with explicit boundary rules.
Open toolSubtitle Cleaner / Validator
Check subtitle syntax and timing, trim whitespace, sort cues and remove exact duplicates safely.
Open toolAll-in-one workspace
Subtitle Workspace
All six subtitle tools together, with exact timing, local video preview and explicit subtitle handoffs.
Open workspaceScientific Calculator
Evaluate real-number expressions with scientific functions, factorials and explicit degree / radian modes.
Open toolMean, Median, Mode & Range
Find the center, repeated values and spread of pasted numbers or a selected local CSV column.
Open toolStandard Deviation & Variance
Compare sample and population variance and standard deviation, with the divisor and data count shown.
Open toolStatistics Summary
Analyze pasted numbers or a local CSV column with quartiles, percentiles, frequencies and a distribution preview.
Open toolProbability & Combinations
Calculate exact combinations, permutations, factorials, count-based probability and binomial point probabilities.
Open toolPrime Number & Factorization
Check integers through one trillion and calculate their exact prime factors and positive divisors.
Open toolGCD / LCM Calculator
Find the exact greatest common divisor and least common multiple of signed whole numbers.
Open toolFraction Calculator
Add, subtract, multiply, divide or compare fractions and mixed numbers with exact rational arithmetic.
Open toolEquation Solver
Solve linear and quadratic equations or small linear systems, with explicit degenerate and complex-root cases.
Open toolMatrix Calculator
Add, multiply, transpose, row-reduce and invert small matrices using exact rational arithmetic.
Open toolAll-in-one workspace
Math Workspace
All ten math tools together, with exact rational algebra, descriptive statistics and downloadable reports.
Open workspaceDate Calculator
Add or subtract calendar dates with exact offsets, clear month-end rules and calendar previews.
Open toolBusiness Days Calculator
Count or add working days with your own weekend pattern and optional holiday dates.
Open toolCountdown Timer
Run a private duration countdown with pause/resume, a progress display and optional completion sound.
Open toolStopwatch
Measure elapsed time with pause/resume, lap splits and downloadable session reports.
Open toolPomodoro Timer
Alternate customizable focus, short-break and long-break sessions with explicit phase controls.
Open toolWorld Clock
Compare live local dates and times in up to eight named browser-supported time zones.
Open toolMeeting Time Planner
Compare a meeting across time zones, check a supplied work window and export a UTC calendar event.
Open toolWeek Number Finder
Find ISO week dates or explicitly selected Sunday / January 1 week numbers, including year boundaries.
Open toolLeap Year Checker
Check Gregorian leap years and list every year in a bounded range with the actual divisibility rule.
Open toolCalendar Generator
Generate printable month or year calendars with custom dates and downloadable HTML / calendar events.
Open toolAll-in-one workspace
Date & Productivity Workspace
All thirteen date and productivity tools together, with exact calendar rules and local timers.
Open workspaceZIP Creator
Create verified ZIP archives from selected local files, with editable paths and compression controls.
Open toolZIP Extractor
Browse supported ZIP entries, select files and download verified extracted copies or a selected-files ZIP.
Open toolArchive Contents Viewer
Inspect the directory, sizes, methods and CRC metadata of supported classic ZIP archives without executing files.
Open toolGZIP Compressor / Decompressor
Compress one file to GZIP or restore its bytes locally, with output limits and checksum validation.
Open toolBatch File Renamer
Preview literal find/replace, case, prefixes, suffixes and numbering, then download renamed copies in a ZIP.
Open toolFile Size Inspector
Inspect exact file sizes, totals and extension breakdowns without reading file contents.
Open toolDuplicate File Finder
Find local duplicate content using size, SHA-256 and final byte-for-byte comparison, leaving originals untouched.
Open toolAll-in-one workspace
File & Archive Workspace
All seven file tools together, with verified ZIP transfers and original files kept untouched.
Open workspaceList Randomizer
Shuffle a local list with explicit whitespace and duplicate handling, preserving entry identity.
Open toolRandom Name Picker
Draw one or more names securely, with exclusions and optional no-repeat ticket draws.
Open toolRandom Team Generator
Shuffle participants into balanced teams by team count or maximum team size.
Open toolDecision Wheel
Spin a local decision wheel with a cryptographically selected outcome and optional no-repeat draws.
Open toolDice Roller
Roll standard or custom dice, keep all/highest/lowest values and apply an explicit total modifier.
Open toolCoin Flip
Flip one or many fair virtual coins with customizable outcome labels and actual batch counts.
Open toolShuffled Number Generator
Shuffle an inclusive integer range or draw a unique sample, with explicit excluded numbers.
Open toolBingo Card Generator
Generate printable standard 75-ball or custom-label bingo cards without rerolling during export.
Open toolAll-in-one workspace
Random & Decision Workspace
All nine random tools together, using secure browser randomness and actual standalone interfaces.
Open workspaceCSV Viewer and Editor
Inspect and edit CSV cells, rename columns, add or remove rows and columns, and sort without running formulas.
Open toolCSV Cleaner
Clean CSV whitespace and remove empty rows or columns with an actual result preview.
Open toolCSV Column Selector
Select and reorder CSV columns by their actual headers, with positional identity for duplicate names.
Open toolCSV Merger and Splitter
Append or align two CSV tables, merge side by side, or split one table into downloadable parts.
Open toolDuplicate Row Remover
Remove duplicate CSV rows using selected key columns, explicit comparison rules and first/last retention.
Open toolDelimiter Converter
Convert comma, semicolon or tab-separated tables with strict quoting, line endings and an actual output preview.
Open toolCSV to TSV and TSV to CSV
Convert CSV to TSV or TSV to CSV without losing quoted tabs, commas or multiline cells.
Open toolTable to Markdown and Markdown to Table
Convert CSV/TSV tables to Markdown pipe tables, or parse supported Markdown pipe tables back to CSV/TSV.
Open toolJSON Table Viewer
View an object or array of JSON objects as a local table while preserving numeric lexemes and nested JSON text.
Open toolCSV Chart Generator
Build downloadable bar, line or pie charts from explicit CSV label/value columns with a local SVG and PNG preview.
Open toolAll-in-one workspace
Spreadsheet & Data Workspace
Edit, clean, transform and chart local tables in one workspace.
Open workspaceDistance Between Coordinates
Calculate spherical great-circle distance between two coordinates, with a sampled path and explicit model.
Open toolBearing Calculator
Find initial, final forward and reverse true bearings between supplied coordinates, with undefined cases explained.
Open toolGeoJSON Validator
Validate a bounded structural GeoJSON profile locally, inspect geometry and see explicit warnings.
Open toolGeoJSON Viewer
Explore GeoJSON points, lines and polygons in a private interactive coordinate diagram without external map tiles.
Open toolPolygon Area Calculator
Calculate spherical polygon area and boundary length, with simple-ring and hole checks within one hemisphere.
Open toolGPX Viewer
View local GPX waypoints, routes and separate track segments without uploading files or loading map tiles.
Open toolRoute Distance Calculator
Measure supplied coordinate routes or GeoJSON lines, keeping gaps between segments separate; no live routing.
Open toolAll-in-one workspace
Geographic & Coordinate Workspace
Convert, validate, view and measure geographic data in one private workspace.
Open workspaceMorse Code Translator
Translate text and Morse with adjustable local audio playback.
Open toolMorse Practice
Practise Morse listening with random letters/digits and explicit answer feedback.
Open toolNATO Phonetic Alphabet
Spell letters with NATO phonetic words, retaining digits and punctuation.
Open toolROT13 Encoder / Decoder
Apply reversible ASCII ROT13; educational encoding, not secure encryption.
Open toolCaesar Cipher
Explore reversible ASCII Caesar shifts while retaining case and punctuation; educational only.
Open toolVigenère Cipher
Explore repeating-key Vigenère substitution with an explicit ASCII-letter key; not secure encryption.
Open toolFile Encrypt / Decrypt
Encrypt and authenticate local files with AES256-GCM, including private filename metadata.
Open toolPaint / Doodle Pad
Draw on a blank canvas with brush, eraser, fill, shapes, text, undo and PNG export.
Open toolSignature Creator
Draw or type a signature and export a transparent, optionally trimmed PNG.
Open toolPixel Art Maker
Create grid-based pixel artwork with pencil, fill, undo and crisp scaled PNG exports.
Open toolFrequency / Tone Generator
Play oscillator tones with exact frequency, waveform and live level controls; export WAV.
Open toolFrequency Sweep Generator
Generate linear/log frequency sweeps with live controls and actual WAV preview.
Open toolNoise Generator
Generate white or approximate pink/brown noise with live gain and WAV export.
Open toolSpectrum / Oscilloscope
Inspect microphone or local-file waveforms and relative spectra without uploading audio.
Open toolPasted HTML SEO Auditor
Inspect supplied HTML titles, descriptions, headings, canonical links and missing alt attributes.
Open toolMeta / Open Graph Preview
Preview supplied social metadata as inert text without fetching remote images/pages.
Open toolrobots.txt Tester
Test supplied robots.txt groups and rules against an explicit crawler token and URL.
Open toolSitemap Validator
Validate a bounded supplied sitemap XML profile and inspect URLs without fetching them.
Open toolAnalytics CSV Report Viewer
Group an explicitly selected CSV dimension/metric and inspect transparent sums and means.
Open toolTyping Speed Test
Measure typing speed and accuracy with a timed passage and live character feedback.
Open toolGuided Typing Practice
Build accuracy with home-row, word, reach and punctuation exercises.
Open toolCustom Text Practice
Practise your own text privately with live feedback and a downloadable session report.
Open toolCode Typing Practice
Practise JavaScript, Python, HTML and CSS with literal punctuation and whitespace feedback.
Open toolCPS Test
Measure clicks per second inside a dedicated mouse or touch test area.
Open toolReaction Time Test
Measure visual response time over repeat trials with early-start detection.
Open toolAll-in-one workspace
Typing & Interaction Workspace
Six practice tools in one focused, private workspace.
Open workspaceKeyboard Tester
Check detected keys, held states and repeat events in a focused keyboard test area.
Open toolMouse, Button & Wheel Tester
Check primary, middle and secondary buttons, movement and wheel events in a dedicated test area.
Open toolTouchscreen Tester
Draw touch and pen traces and inspect simultaneous pointer contacts locally.
Open toolDisplay Colour & Dead-Pixel Test
Inspect your display manually with solid white, black, red, green, blue and grey patterns.
Open toolGradient Test
Inspect greyscale and colour gradients, direction and intentional band steps on your display.
Open toolScreen & Viewport Information
See browser-reported screen size, viewport dimensions, pixel ratio and display preferences.
Open toolMicrophone Test
Check microphone input with a live waveform and relative peak and RMS levels, without speaker monitoring.
Open toolStereo Speaker & Headphone Test
Play a quiet test tone through the left, right or both browser output channels.
Open toolWebcam Test
Check a live camera preview and the settings delivered by your browser without recording or uploading.
Open toolScreen Light
Use a steady white, warm or cool screen light with adjustable preview brightness and optional fullscreen.
Open toolAll-in-one workspace
Device & Browser Test Workspace
Ten browser tests in one private workspace.
Open workspaceCamera Mirror
Use a private live camera mirror with optional mirrored PNG capture.
Open toolSnapshot Camera
Take a local camera snapshot with an optional countdown and download the actual PNG.
Open toolPhoto Booth
Capture four photos and create a local grid or strip collage.
Open toolLive Camera Filters
Preview colour effects live and capture the same rendered look as a PNG.
Open toolTimelapse Capture
Capture a local JPEG frame sequence with actual timestamps and export a verified ZIP.
Open toolMotion Detector
Compare local camera frames and show visual change levels with optional sound alerts.
Open toolManual Document Capture & Crop
Capture a document, drag a crop selection and export an enhanced PNG locally.
Open toolAll-in-one workspace
Camera Workspace
Seven local camera tools in one workspace.
Open workspaceVirtual Piano
Play a responsive two-octave synthesized keyboard with mouse, touch or focused computer keys.
Open toolDrum Pad
Play eight locally synthesized percussion pads using touch, mouse or focused keyboard shortcuts.
Open toolSimple Synthesizer
Shape a playable oscillator keyboard with live waveform, filter and envelope controls.
Open toolMetronome
Practise with an audio-clock-scheduled beat, accents and subdivisions.
Open toolInstrument Tuner
Estimate a steady single-note pitch locally from your microphone with a tunable A4 reference.
Open toolChord Explorer
Explore chord pitches and inversions, hear chords and play their arpeggios.
Open toolScale Explorer
Explore common scale patterns and play them ascending, descending or both ways.
Open toolEar & Rhythm Practice
Practise interval recognition and four-beat tap timing with explicit feedback.
Open toolAll-in-one workspace
Music & Learning Workspace
Eight music and learning tools in one private workspace.
Open workspace Private by design Runs on your device Always free to use
Keep your toolkit close. Bookmark thebrowserbox.com. Ctrl / ⌘ + D Save this page from your browser’s menu.
A place for every little task.
QR Tools
Create QR codes and barcodes, read QR content, and prepare codes for printing.
11 tools available
Image Tools
Resize, convert and refine images on your device.
26 tools available
PDF Tools
Organize PDF pages, convert images and documents, and extract text privately in your browser.
12 tools available
3D and Printing Tools
Private browser tools for viewing 3D models, meshes and point clouds. Explore supported geometry without uploading files.
7 tools available
CAD Tools
View and inspect DXF drawings locally, with drawing reports and clear format limitations. Browser-only CAD utilities with no uploads.
12 tools available
Conversion Tools
Convert measurements, numbers, time, and scientific or engineering quantities locally. Explicit unit definitions, useful precision and no uploads.
41 tools available
Calculator Tools
Private calculators for money, dates, comparisons and everyday estimates, with clear formulas, useful controls and a combined workspace.
21 tools available
Audio Tools
Trim, edit and prepare audio locally, with waveform selection and private downloads.
31 tools available
Video Tools
Inspect, play, trim and resize local videos, capture frames, extract audio and create GIFs without uploads.
7 tools available
Camera Tools
Private camera mirror, snapshots, photo booth, live filters, timelapse frames, motion observations and manual document capture.
8 tools available
Music & Learning Tools
Play synthesized instruments, practise beats and intervals, explore chords and scales, and estimate a single-note pitch locally.
9 tools available
Device & Browser Tests
Check keyboard, mouse, touch, display, microphone, speakers and camera with private local browser tests.
11 tools available
Typing & Interaction Tools
Practise typing, improve accuracy, and test click speed and visual reaction time privately in your browser.
7 tools available
Random & Decision Tools
Shuffle lists, draw names, balance teams, spin decisions, roll dice and make bingo cards privately with secure randomness.
10 tools available
Math & Statistics Tools
Explore scientific expressions, descriptive statistics, exact fractions, number theory, equations and matrices privately.
11 tools available
Spreadsheet & Data Tools
Edit, clean, select, merge and chart CSV tables. Convert TSV, JSON and Markdown locally without uploading your data.
14 tools available
File & Archive Tools
Create and inspect ZIPs, restore GZIP data, rename file copies, inspect sizes and find exact duplicates privately.
8 tools available
Text Tools
Clean, count and transform everyday text.
25 tools available
Developer Tools
Format, validate and inspect your data.
31 tools available
Security and Privacy Tools
Local security utilities for passwords, secure random numbers, authenticated text encryption and file integrity checks. No uploads, accounts or saved input history.
7 tools available
CSS and Design Tools
Build CSS effects, inspect colors and prepare design code locally, with live previews and no uploads.
10 tools available
Subtitle Tools
Edit, convert, synchronize, merge and validate SRT / WebVTT captions privately, with optional local video preview.
7 tools available
Date & Productivity Tools
Plan dates and working days, run timers, compare time zones and make printable calendars privately on your device.
14 tools available
Geographic & Coordinate Tools
Convert coordinates, inspect GeoJSON/GPX and measure supplied distances, bearings, routes and polygons privately without map tiles.
9 tools available
YOUR FILES ARE YOUR BUSINESSUseful tools.
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Open a tool and get started.
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Each tool does a specific job. We’re adding them one at a time, with care.