Turn PNG and JPG images into WebP and cut their size by roughly a third — the fastest single win for a slow web page or a heavy upload.
Multiple files welcome — converted locally, never uploaded
WebP was built for the web: at the same visual quality it is typically 25–35% smaller than JPG and far smaller than PNG for photos. Smaller images mean faster page loads, better Core Web Vitals scores, less bandwidth, and uploads that fit under portal size limits more easily. Every modern browser displays WebP, so for anything published on a website it is the safe default today.
Your browser decodes each PNG or JPG and re-encodes it as WebP at the quality you choose, entirely on your device. Nothing is uploaded, so converting screenshots, product photos or client work stays private. Transparency from PNG files is preserved in the WebP output.
82 (default) is the sweet spot for photos — visually indistinguishable from the original at a much smaller size. Drop to 60–70 for thumbnails and previews where size matters most, or raise to 90+ for hero images and anything that will be edited further.
1. Set the quality first. Move the slider before you add files — 82 is the recommended starting point for photographs — because every file converts at the quality selected when it is processed. 2. Add your images. Drop PNG or JPG files onto the box above, or click to pick them; you can add a whole batch at once. 3. Download each WebP. Every finished row shows the new file size and the percentage saved compared with the original, so you can see the win file by file before you download. Your originals are never modified.
Converting a JPG to WebP is a re-encode of an already lossy photo, and typically saves around a quarter to a third of the size at the same visual quality. Converting a PNG photo is where the dramatic numbers live — a camera screenshot or product photo saved as PNG can shrink by 80% or more, because PNG wastes enormous space on photographic content. The picture reverses for simple graphics: a flat logo, icon or diagram with a few solid colours may already be tiny as a PNG, and a lossy WebP at low quality can soften its crisp edges. For graphics like those, keep the quality slider high — 90 or above — and compare the result before replacing the original on your site. Transparency survives the trip in both cases: a PNG with a transparent background produces a WebP with the same transparent background.
WebP is the right default for images displayed on a website, but it is not the right format for everything. Keep the original file when the image is going to print, where JPG or PNG is what printers expect; when it is a master copy you plan to edit repeatedly, since every lossy re-encode costs a little quality; and when the destination is older desktop software, an email client or an upload form that still rejects WebP. A good working habit is to convert copies for publishing and keep your originals untouched in a folder — storage is cheap, and an unconverted master means you can always produce any format later. If you have already converted a file and a destination refuses it, the WebP to JPG tool on this site converts it straight back.
The WebP came out larger than the original. This can happen with very small, already well-optimised JPGs or simple graphics, where there is little left to save and the format overhead shows. In that case keep the original — the percentage shown on each row tells you honestly whether the conversion helped. Text in a screenshot looks soft. Screenshots mix photos with sharp text, and text suffers first at low quality; raise the slider to 90 or above and convert that file again. A file would not convert. The tool accepts PNG and JPG images; a file with an image name but a different internal format — a renamed WebP or HEIC, for example — should be converted to PNG or JPG first, then brought here.
Is WebP supported everywhere? All current versions of Chrome, Edge, Firefox and Safari display WebP. Very old software and some desktop editors still do not — if a program refuses your WebP, convert it back with the WebP to JPG tool.
Is there a file limit? No account and no daily cap. Very large batches are limited only by your device's memory.