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 is Google's modern image format and it is supported in every major browser, including Safari since iOS 14. At matching visual quality, WebP files are typically 25–35% smaller than JPG and 20–30% smaller than a lossy PNG. For images you publish on the web — product photos, blog images, gallery thumbnails — WebP saves bandwidth without sacrificing fidelity.
The trade-off: WebP is not yet universally supported in social media uploaders, email clients, and older content management systems. If you are sharing an image somewhere that does not understand WebP, JPG remains the safe default. Otherwise, WebP is usually the smarter format.
When to lower the WebP quality slider
The default of 75 is calibrated for general-purpose photos and graphics. WebP at 75 already produces files smaller than JPG at 75 of the same image — the encoder is more efficient. Drop to 60 for thumbnail and gallery use where the rendered size is small. Drop to 50 only if file size matters more than fidelity. Below 40, WebP starts producing soft, slightly cartoonish results on detailed photos. Tinier's before/after comparator shows you exactly what each setting costs.
Why compress WebP in the browser?
Server-side WebP compressors upload your image, run libwebp on a backend, and return the result. The libwebp step is identical to what Tinier does — it is the same open-source library. The difference is the round-trip: upload, server processing time, download. On a 5 MB WebP file over a typical home connection, that round-trip takes 10–20 seconds. Tinier does it locally in 2–4 seconds. Your file never leaves your device, which means privacy is structural here, not a checkbox in a privacy policy.
Frequently asked questions about WebP compression
What is WebP and why use it?
WebP is a modern image format developed by Google. At matching visual quality, WebP files are typically 25–35% smaller than JPG and 20–30% smaller than PNG. Every major browser supports WebP today, including Chrome, Edge, Firefox, Safari, and the mobile equivalents. If you publish images on the web, WebP is usually the right format.
Does Tinier support lossless WebP?
Today Tinier compresses WebP in lossy mode using libwebp's quality slider. Lossless WebP is on the roadmap. If you have a graphic that must stay pixel-identical, use PNG with Tinier's lossless OxiPNG path for now.
Should I convert my JPGs to WebP?
Tinier does not convert formats today — the output format always matches the input. There is no silent conversion of your JPG to WebP to inflate the savings number. If you want a WebP file, export it as WebP from your editor and then drop it into Tinier to compress further.
How much smaller will my WebP get?
If your WebP was exported at quality 90 or 100, expect 30–50% savings dropping it to the default of 75. If it was already exported at 75, savings are smaller — usually 5–15% — because most of the work was already done. Tinier shows you the size before and after honestly, and tells you when an image is already well optimized.
Other formats Tinier compresses
- Compress JPG — lossy compression with MozJPEG and a real quality slider.
- Compress PNG — lossless optimization with OxiPNG, no quantization tricks.
- Image compressors compared — an honest look at where Tinier wins and where it does not.