OmniCalcsImage to WebP Converter
Turn any image into fast-loading WebP — smaller files, same look.
How to Use This Converter
Upload an image, pick a quality level, optionally scale it, and download the WebP result. Quality 80 is a great balance of size and sharpness.
- WebP files are usually 25–35% smaller than JPG at the same quality.
- Lower the quality for web thumbnails; keep it at 85+ for photography.
- WebP supports transparency, so PNG logos convert cleanly.
Frequently Asked Questions
Is WebP supported everywhere?
Yes — every modern browser (Chrome, Firefox, Safari, Edge) supports WebP. It's also used by WordPress, Cloudflare and most image CDNs by default.
Is my image uploaded anywhere?
No. Conversion happens locally in your browser with the Canvas API — your image never leaves your device.
WebP vs JPG — which is better?
WebP wins on size for the same visual quality, and supports transparency. JPG is only better for maximum compatibility with ancient software.
Does quality 100 mean lossless?
No — WebP at 100 is still lossy, just very high quality. True lossless WebP uses a different mode that this tool doesn't expose.
Practical Example
A 1.8 MB JPG photo converted to WebP at 80% quality:
- Typical result: 0.5–0.9 MB — roughly 50–70% smaller.
- At 90% quality the file is a bit larger but visually lossless for most screens.
- Scaling to 50% makes a web-friendly ~150 KB version.
What Your Results Mean
- File size — the WebP byte count; this is what makes pages load faster.
- Quality — lossy trade-off: lower = smaller and softer, higher = sharper and larger.
- Dimensions — pixel size after your scale setting; aspect ratio is preserved.