Compress WebP Online
Make WebP images lighter for faster pages while choosing how much quality to keep. Transparency is preserved, dimensions stay the same, and nothing is uploaded.
- Free to use
- No sign-up required
or drag and drop WebP files here
Select one or many. Dimensions stay the same; only the file size changes.
Processed locally in your browser. Your file is never uploaded.
How to compress WebP images
- Choose your WebP images, or drag them onto the page. You can add more at any time.
- Pick a quality preset: Smaller File, Balanced, or Best Quality.
- Press Compress WebP. Each image is processed one after another.
- Compare the sizes, then download each image or all of them as a ZIP.
Private image compression
Your images are decoded and re-encoded by your browser's own WebP encoder. No file is sent to a server or stored remotely. Your images exist only in your browser's memory while this page is open.
How WebP compression works here
Each image is decoded and encoded again as WebP at the quality you choose, so the encoder can discard detail you are unlikely to notice. Transparent areas stay transparent. Metadata is not carried over. If re-encoding would not make a file smaller, the original is kept and marked as already optimized. Your browser must be able to create WebP images; current versions of Chrome, Firefox, Safari, and Edge can, and the tool tells you if yours cannot.
- Smaller File
- The biggest savings. Fine for sharing, messaging, and web thumbnails.
- Balanced
- Clearly smaller files with detail that still looks right on screen.
- Best Quality
- Gentle compression that keeps fine detail. Savings are smaller.
Frequently asked questions
- Are my images uploaded?
- No. Compression runs entirely in your browser. This site has no upload endpoint, and your images never leave your device.
- Is transparency preserved?
- Yes. The image is redrawn onto a transparent canvas and encoded as WebP with its alpha channel intact.
- Will the image dimensions change?
- No. Width and height stay exactly the same. Only the amount of compression changes.
- Does this work with lossless WebP files?
- Yes, but the output is always lossy WebP at the chosen quality. For graphics that must stay pixel-exact, keep the original; the tool will hand it back unchanged if re-encoding would not save space.
- Can I compress many images at once?
- Yes. Select as many as you like, or add more later. Each is compressed in turn with a progress indicator, and Download All packs the results into one ZIP.
- What is the output file called?
- The original name with -compressed added, so hero.webp becomes hero-compressed.webp. A batch downloads as compressed-webp.zip.
Related tools
Other converters that run in your browser.