Why convert images to WEBP?
WEBP is Google's open image format designed specifically for the web. It combines the best of JPG and PNG: lossy compression for photographs (like JPG) and lossless compression with transparency support (like PNG), all in a single format. The result is files that are consistently 25–35% smaller than JPG and up to 80% smaller than PNG, at the same visual quality. For any website or app that serves images to modern browsers, switching to WEBP is one of the easiest wins for page speed and bandwidth.
Supported input formats
| Format | Common source | Typical size saving vs WEBP at 85% |
|---|---|---|
| PNG | Screenshots, logos, design exports | 50–80% smaller for photos; 20–40% for graphics |
| JPG | Photos, camera output, web images | 25–35% smaller at equivalent quality |
| AVIF | Next-gen web images, modern cameras | 0–15% — AVIF is similarly efficient |
| GIF | Memes, simple graphics | Varies; first frame only, animation not preserved |
| BMP | Windows screenshots, legacy software | 15–30× — BMP is completely uncompressed |
| SVG | Vector icons, illustrations | Varies; rasterised at natural size |
How to convert any image to WEBP
- Drop your files — drag onto the upload zone, click to browse, or paste from clipboard. Mix formats freely; up to 30 files at once.
- Set quality — 85% is the default and is visually indistinguishable from the source for most images. Lower for smaller files; raise for maximum fidelity.
- Click Convert — all files convert in parallel in your browser using the Canvas API. Nothing is sent to a server.
- Download — grab files individually, or download all at once as a ZIP.
WEBP vs JPG: which is better?
For web delivery, WEBP wins on file size every time. At the same visual quality, a WEBP is typically 25–35% smaller than a JPG. That means faster page loads, lower bandwidth costs, and better Core Web Vitals scores. WEBP also supports transparency, which JPG cannot. The only reason to prefer JPG today is compatibility with older software — email clients, legacy Windows apps, and some image editors that predate WEBP support. If your images are destined for a website or modern app, WEBP is the better choice.
Converting PNG to WEBP
PNG is lossless and often very large — a full-screen screenshot can be 2–5 MB. WEBP can encode the same image losslessly at roughly half the size, or lossily (with the quality slider) at a fraction of the original. Crucially, WEBP preserves the alpha channel, so transparent logos, icons, and UI elements convert without any white background appearing. For dedicated PNG-to-WEBP conversion with lossless mode, see our PNG to WEBP converter.
Converting JPG to WEBP
JPG photos are already lossy-compressed. Re-encoding to WEBP introduces a second compression pass, but at 85% quality the additional loss is imperceptible. The file size reduction is real and meaningful: a 500 KB JPG hero image typically becomes 320– 380 KB WEBP. For high-traffic websites, that saving multiplies across every page view. If you are converting hundreds of JPGs for a website migration, use batch mode — drop up to 30 files at once.
Transparency in WEBP
WEBP supports full 8-bit alpha transparency, the same as PNG. When you convert a transparent PNG, AVIF, or SVG to WEBP, the transparent areas are preserved exactly — no white fill, no colour bleed. This makes WEBP a direct replacement for PNG in web contexts where you need both small file size and transparency: product photos on white backgrounds, logos with clear backgrounds, UI icons.
WEBP browser compatibility
All modern browsers support WEBP: Chrome (since 2011), Firefox (since 2019), Edge (since 2018), and Safari (since iOS 14 / macOS 11 Big Sur, 2020). Global browser support is above 96%. The only scenarios where WEBP may not display are very old Android browsers, pre-2020 Safari on macOS, and some non-browser software like email clients and older image editors. If you need guaranteed universal compatibility, use JPG or PNG instead.
Batch converting images to WEBP
Drop up to 30 files — mix PNG, JPG, AVIF, GIF, BMP, and SVG freely in a single batch. All files convert in parallel and the quality setting applies to each one. Download individually or grab a single ZIP with every converted WEBP. The ZIP preserves the original filenames with the extension changed to .webp. For larger batches, split into groups of 30; browser memory is finite.
Privacy
All conversion happens locally in your browser. No file data is transmitted to any server. The Canvas API decodes each image and re-encodes it as WEBP entirely within your tab. You can disconnect from the internet after loading the page and the converter will still work.