Convert static PNG, JPEG and WebP images locally while keeping their pixel dimensions. Choose transparency settings, preview the output and download the correct format. AVIF export appears only when supported natively.
Your image is never uploaded to any server; decoding and format conversion happen locally in your browser. No account or image history is needed. The actual exported MIME type is checked before enabling download, preventing unsupported encoders from silently producing a mislabeled PNG.
Inputs are static PNG, JPEG and WebP. Outputs are PNG, JPEG and WebP when the browser can encode them, plus AVIF only when a small native export probe succeeds. Actual exported MIME type is checked again for every conversion. AVIF input, SVG, GIF, HEIC and detected animated PNG/WebP are not supported by this tool.
AVIF decoding and AVIF canvas export are different capabilities. A tiny generated canvas is tested locally for image/avif export. If it returns PNG, fails or does not respond within two seconds, AVIF stays disabled. No library or model is downloaded, and no user image is used in the probe. Availability does not guarantee every image can be encoded.
No. The browser-oriented original width and height are retained, with no crop or scaling. Output is limited to 8,192 pixels per side and 16 megapixels. Larger images need Image Resizer first. Inputs can be up to 20 MiB, 40 megapixels and 16,384 pixels per side; the browser may impose lower memory limits.
PNG and WebP retain transparency where supported. JPEG fills transparent areas with the chosen background color, white by default. Inspect native AVIF output if available, as encoding details depend on the browser. Quality applies to lossy formats and is not a guaranteed file-size scale. PNG encodes the decoded raster losslessly and ignores the quality slider; it cannot restore detail already lost in a JPEG.
The image is decoded and re-encoded in that format, rather than copied unchanged. The result can have a different file size, quality and metadata even when dimensions match. The status message labels this as re-encoding. Use Image Compressor for explicit file-size comparisons and optional dimension limits.
Canvas creates a new raster image. Original metadata, encoded bytes and exact color-profile behavior are not preserved or guaranteed, and the browser handles image orientation. Edits and new files clear old downloads and discard late results. Encoding has a 15-second response limit. Clear and leaving the page release application-held images, canvases and local object URLs.
