What this tool does
Re-encodes your WEBP at the selected quality level. Transparency is preserved. The result is a smaller WEBP file suitable for web delivery. Runs entirely in your browser.
Image tool
WEBP Compress Online
Compress WEBP images to reduce file size while keeping the format. Adjust quality, compare before/after sizes, and download — all processed locally in your browser with no upload required.
Complete guide
How to use WEBP Compress Online
Image tools guide for webp compress online users.
WEBP supports both lossy and lossless compression modes. When you compress a WEBP file by adjusting quality, you are using lossy recompression — similar to JPG compression. At quality 80 and above, the difference is invisible on screen. WEBP's compression algorithm is more efficient than JPG, so a WEBP at quality 80 looks better than a JPG at quality 80 with the same file size.
WEBP also supports transparency (alpha channel), which is preserved through compression. This makes it the best format for web graphics that need both small file size and transparent backgrounds.
All compression runs in your browser using the Canvas API — your images never leave your device.
How to use it
Upload your WEBP, adjust the quality slider (default 80%), and click Convert. Download the compressed file. The page shows the file size reduction.
Best practices
Use 75–80% for web images displayed at normal sizes. Use 85–90% for images where users might zoom in (product photos, portfolio images). Stay above 70% to avoid visible artefacts in WEBP.
Quick checklist
- Confirm the input file, value, text, or measurement is correct before running the tool.
- Use the visible dropdowns and settings to choose the output format, unit, quality, size, or result style.
- Check the preview, result text, or downloaded file before using it for important work.
- For private or sensitive data, prefer browser-based tools and avoid uploading files unless the tool clearly needs server processing.
Answers
WEBP Compress Online FAQs
Does WEBP compression preserve transparency?
Yes. WEBP's alpha channel is preserved through lossy and lossless compression. Transparent areas stay transparent in the output.
Is compressed WEBP still better than JPG?
Yes. WEBP at quality 75 typically looks equivalent to JPG at quality 85, but at a smaller file size. WEBP is more efficient than JPG at every quality level.
Can I convert WEBP to JPG or PNG instead?
Yes. Change the output format dropdown to JPG or PNG. JPG is best for maximum compatibility; PNG preserves transparency but creates larger files.
Is my image uploaded to a server?
No. WEBP compression runs entirely in your browser — no upload, no server, no privacy concern.
What quality should I use for website images?
80% is the standard for most website images — good quality, small file size. Use 85–90% for hero images or portfolio work where quality is more important than speed.