Compress WebP Online — Free & Private
Create and shrink WebP images in your browser. The web's smallest mainstream format.
Drop your images here
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Drop your images above to compress them as WebP — the modern format that is typically 25–30% smaller than JPEG at the same visual quality, with universal browser support since 2020. The encoding runs in your browser, so nothing uploads.
WebP works for both photographs and graphics with transparency, which makes it the best default for images you serve on a website.
Why WebP for the web
At equivalent visual quality, WebP lossy beats JPEG by 25–30%, and WebP lossless beats PNG by around 26%. Every current browser supports it. For images you control and serve yourself, WebP is the strongest default — smaller pages, faster Largest Contentful Paint, better Core Web Vitals.
For target file sizes per page region, see best image sizes for web performance.
Where WebP is not the answer
Email clients and a few older editors still do not read WebP reliably. If you are emailing a file or sending it to a colleague, use JPEG instead — switch the format above. See reducing image size for email for the full breakdown.
A worked example: a photo and a transparent logo
WebP wins in two different ways depending on the image. Take a 1600×900 photographic hero: as a quality-80 JPEG it is about 180 KB, and as quality-80 WebP about 130 KB — roughly 28% smaller for an identical-looking result. Across a page full of images, that 28% compounds directly into a faster Largest Contentful Paint.
Now take a transparent PNG logo at 400×400 that weighs 60 KB. Converted to lossless WebP it keeps the transparency exactly and drops to around 20 KB. WebP replaces transparent PNGs on the web at a fraction of the size — one of the easiest wins for graphics-heavy sites.
AVIF vs WebP
AVIF is the newer format and compresses about 20–30% smaller than WebP again, but encoding is slower and a few tools still lag. The strongest setup serves AVIF first, WebP second, and JPEG as a fallback via the <picture> element. See AVIF vs WebP for the full comparison.
Private and unlimited
WebP encoding happens locally in your browser through WebAssembly. No uploads, no file limits, no watermarks.
Frequently Asked Questions
Is WebP supported everywhere?
In browsers, yes — every current browser has supported WebP since 2020. Outside the browser, some email clients and older editors still do not read it, so use JPEG for those.
Is WebP really smaller than JPEG?
For photographs, typically 25–30% smaller at the same visual quality. For flat graphics, lossless WebP beats PNG by around a quarter.
Does WebP support transparency?
Yes, at a fraction of PNG's file size. That makes it a good replacement for transparent PNGs on the web.
Do my files upload when converting to WebP?
No. The WebP encoder runs in your browser. Your images never leave your device.
Further Reading
JPEG vs PNG vs WebP: Which Format Should You Use?
Understanding the strengths and trade-offs of the three most common image formats on the web.
5 min read
AVIF vs WebP: Which Next-Gen Format Should You Use?
AVIF compresses smaller than WebP, but it isn't always the right choice. Here's how the two modern formats compare on size, quality, support, and speed.
7 min read
Best Image Sizes for Web Performance in 2026
Practical guidelines for image dimensions, file sizes, and responsive delivery that keep your site fast.
5 min read