WebP Optimizer
WebP gives you JPG-like photos and PNG-like transparency in files that are usually a third smaller. It's supported by every modern browser, which makes it the default choice for websites.
- Never uploaded
- Instant, no sign-up
- Works offline
Drop images here
Files stay in your browser — nothing is uploaded.
About this tool
Drop in JPG, PNG or WebP files and get optimized WebP back at 80% quality — adjust the slider or set a maximum width for even smaller files.
How it works
- 1
Add JPG, PNG or WebP images.
- 2
Adjust quality or width if needed.
- 3
Download the optimized WebP files.
Features
- Any inputJPG, PNG, GIF, BMP and SVG all convert to WebP.
- Transparency keptPNG cut-outs stay transparent in WebP.
- Bulk readyOptimize a whole site's images and download a ZIP.
- Private by designEverything runs on your device. No uploads, no account, no watermark, and EXIF/GPS data is stripped from the result.
Supported formats
Input: JPG, PNG, WebP, GIF (first frame), BMP, SVG, AVIF, plus TIFF/HEIC where your browser can decode them. Output: PNG, JPG or WebP.
Frequently asked questions
How much smaller is WebP than PNG?
For photos, often 70–90%. For flat graphics with transparency, typically 25–50%.
Will WebP work in emails?
Many email clients don't support WebP yet. Use JPG or PNG for email.
Can I go back from WebP?
Yes, convert WebP to JPG or PNG any time, though lost detail can't be restored.
Are my images uploaded to a server?
No. Files are decoded, processed and re-encoded by your browser using the canvas API and Web Workers. Nothing is sent to any server, and there is no account or storage. Closing the tab discards everything.
Related tools
Need more than one tool?
The full editor combines cropping, adjustments, filters, text, shapes and layers in one place.