Image Converter (PNG, JPG, WebP)

The file is opened by the browser's own image decoder — the same one that shows pictures on web pages, so anything it can display it can convert: PNG, JPEG, WebP, GIF, BMP, AVIF where supported, and SVG. The pixels are drawn onto an off-screen canvas at the source size (SVG at its intrinsic size times the scale you choose) and the canvas is asked to encode PNG, JPEG or WebP. The file never leaves your machine; large images are limited only by your device's memory.

PNG is lossless and keeps transparency. WebP keeps transparency and is lossy at the quality you set. JPEG has no alpha channel: transparent pixels are painted onto the background colour first, and the page warns before it happens. Animated GIF or WebP becomes a single still frame. EXIF data, colour profiles and DPI tags are not copied into the output — a canvas only carries pixels — so an orientation tag is applied by the decoder and then dropped. Converting a lossy file to the same lossy format re-compresses it and is flagged.

JPEG and WebP encoders are part of the browser, so Chrome, Firefox and Safari produce different file sizes (and slightly different pixels) at the same quality number; the size shown is what your browser made. A browser that cannot encode WebP will say so rather than silently produce PNG. HEIC (iPhone photos) is accepted but only converts where the browser itself decodes it — Safari 17 and later on iPhone, iPad and Mac; Chrome and Firefox do not ship an HEVC decoder, so on those the page says so instead of failing silently. Nothing leaves the browser; the same four anonymous usage counts as the rest of the site apply.