Convert PNG images to WebP for a faster website. Transparency is kept. Free, no watermark, and your files never leave your browser.
No images yet. You can also drop files on this box.
Changes apply to every image instantly. Size and aspect ratio stay the same.
WebP keeps transparency like PNG but is usually much smaller: often 50 to 80% for screenshots and graphics at quality 80, which helps page speed and Core Web Vitals. Every current browser shows WebP. Pick quality 100 if you need near-lossless output.
Each file is decoded by your browser, drawn onto a canvas at its original size and re-encoded in the format you chose. Nothing is uploaded. Phone photos are rotated the right way up, and EXIF metadata (camera, GPS location) is removed. SVG files are rasterized at their own width and height. HEIC photos from iPhones can only be read in Safari; elsewhere, set the iPhone camera to "Most Compatible" or export as JPG first.
Other conversions: Image: JPG, PNG and WebP, PNG to JPG, JPG to PNG, WebP to PNG, WebP to JPG, JPG to WebP. Need it smaller too? Use the image compressor (target size in KB) or resize the image to exact pixels.
If your images are screenshots of web pages, skip the conversion step. The Shotmint API renders any URL or HTML in Chromium and returns a PNG, JPG or WebP directly:
curl "https://shotmint.creasework.com/v1/screenshot?url=https://example.com&format=webp&quality=80" -H "X-API-Key: YOUR_KEY" -o page.webpEach screenshot is 1 credit. €5 buys 2,000 with no subscription, and credits never expire.
Get 100 free renders Try a website screenshot
Are my images uploaded? No. The conversion runs in JavaScript on this page, so it works for private photos and ID scans, and even offline once the page has loaded.
Does converting lose quality? To PNG: no new loss. To JPG or WebP: a little, set by the quality option. "Maximum" is visually identical for almost any image. Converting never adds back detail that was already lost.
Is there a limit? No file count limit and no watermark. Very large images (over about 50 megapixels) depend on your device's memory.
What about animated GIF or WebP? Only the first frame is converted.