TOOL· image · convert · webp· Live
Image Converter
Convert and shrink images to WebP, AVIF, JPG, or PNG, all in your browser. No upload, no server, no quality loss beyond what you ask for.
Tool · Image ConverterLocal in your browser
Compression
Balanced quality and file size
Output format
Best compression for the web — recommended
%
Keep original dimensions
Drop images here, or click to choose
JPG, PNG, WebP, GIF, HEIC, HEIF, BMP, AVIF — multiple files supported
No images yet — upload one to convert.
How it works
Pick (or drop) one or more files. The tool reads them with FileReader, draws each one into an off-screen <canvas>, and uses canvas.toBlob(mime, quality) to produce the converted output. Three quality presets map to 0.95 / 0.85 / 0.65. The resize input scales both dimensions before the canvas is drawn.
Supported inputs: JPG, PNG, WebP, GIF, BMP, AVIF, HEIC, and HEIF. Animated GIFs are flattened to the first frame (canvas can't preserve animation).
Supported outputs: WebP (default), AVIF, JPG, PNG.
HEIC and HEIF need a decoder that browsers other than Safari don't ship. To keep the page light, heic2any is only loaded on demand: the first time you drop a .heic file, it is fetched via dynamic import(). If you never use HEIC, the library never loads.
When to use it
- Shrinking photos before posting them somewhere with a strict size limit.
- Turning an iPhone HEIC into a WebP or JPG that every browser can show.
- Quickly batch-converting a folder of PNGs to WebP without uploading them anywhere.
Everything runs locally in your browser. Nothing leaves the page.
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