Compress WebP images in your browser
Drop a WebP file and Tinier compresses it locally on your device using libwebp, the same encoder that Chrome, Android, and most modern browsers use to decode WebP in the first place. The quality slider works exactly like JPG: 1 to 100, you control it. Nothing uploads. Up to 50 MB per file, 1 to 10 files at a time.
Why WebP is usually the right choice today
WebP was designed to replace both JPG and PNG on the web. It compresses photos 25–35% smaller than JPG at the same visual quality, and it supports transparency like PNG. Every major browser — Chrome, Safari, Firefox, Edge — supports it now, so the old compatibility objection is gone. If you are choosing a format for images on a website today, WebP is usually the smallest option that still looks great.
When to lower the WebP quality slider
Just like JPG, the default quality is the sweet spot for most images. Lower it when you want the smallest possible file and can accept mild softening — good for backgrounds and thumbnails. Keep it high when detail matters. The before/after comparator shows you the trade-off directly, so you pick the setting with your own eyes rather than trusting an automatic guess.
Why compress WebP in the browser?
Tinier compresses WebP locally with libwebp compiled to WebAssembly, so your file never leaves your device — you can disconnect your internet after the page loads and it keeps working. It is faster than a server-side tool on files under 10 MB because there is no upload or download, and it is private by construction rather than by promise.
Frequently asked questions about WebP compression
What is WebP and why use it?
WebP is a modern image format from Google that compresses 25–35% smaller than JPG at matching quality, and supports transparency like PNG. Every major browser supports it today. It is usually the best choice for images on the web.
Does Tinier support lossless WebP?
Tinier compresses WebP with a quality slider (lossy), the mode that gives the biggest savings on photos. Lossless WebP is a separate mode that Tinier does not offer yet. For a truly lossless workflow today, use PNG.
Should I convert my JPGs to WebP?
If you control where the images are displayed and can serve WebP, converting can save 25–35% over JPG at the same quality. Tinier compresses WebP you already have; it keeps the output format the same as the input rather than converting for you.
How much smaller will my WebP get?
It depends on the image and the quality setting. At the default quality, most WebP photos compress noticeably with no visible loss. As with JPG, the built-in comparator lets you see exactly what each setting costs.
Other formats Tinier compresses
- Compress JPG — lossy compression with MozJPEG and a real quality slider.
- Compress PNG — lossless optimization with OxiPNG, no quantization tricks.
- WebP to PNG — convert WebP to a lossless, universal PNG.
- Image compressors compared — an honest look at where Tinier wins and where it does not.