Convert JPG to WebP
WebP is Google's modern image format that typically produces 25–35% smaller files than JPG at the same perceived quality. It's supported by every modern browser and ideal for speeding up web pages.
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To convert JPG to WebP, drop a JPG above and adjust the quality slider. WebP typically produces files 25–35% smaller than JPG at the same visible quality, which is one of the easiest Core Web Vitals wins for a modern website. Chrome, Edge, Firefox, Safari (14+) and every current mobile browser render WebP natively — no fallback is required. The re-encode runs on your device using canvas.toBlob('image/webp', quality); nothing is uploaded.
Drop a JPG here, or click to upload
Output: WebP
What JPG to WebP conversion actually does
WebP is Google's image format built on the VP8 keyframe codec. Its lossy mode uses a smarter block predictor than JPEG, and its lossless mode uses a custom transform-based coder derived from WebP-Lossless. At quality 80 a WebP photo is visually indistinguishable from a quality-90 JPG while being roughly 30% smaller — that's why it dominates CDN pipelines like Cloudinary, Imgix and Netlify Images. WebP also supports alpha transparency and animation, but a JPG source contributes neither. Since Safari 14 (September 2020) WebP is supported on every major browser, and it is now the default output of iOS Screenshot and Android Chrome save-as.
Common mistakes and limitations when going from JPG to WebP
Older platforms are the main constraint: Internet Explorer, Safari 13 and earlier, Word 2016 and many legacy CMS uploaders reject WebP. If your audience overlaps with those, keep a JPG fallback. WebP is also not a lossless upgrade from JPG — you are re-encoding lossy data with a different lossy codec, so at very low quality settings you can see slight extra softness. For archival masters, keep the JPG. Finally, WebP metadata support is patchier than JPEG; EXIF and XMP survive some pipelines and not others.
JPG to WebP conversion FAQ
- Do all browsers support WebP?
- Yes. Chrome, Edge and Firefox have supported WebP for years, and Safari added support in version 14 (2020). Any browser released after 2021 renders WebP natively.
- Will I lose quality converting JPG to WebP?
- There is a tiny re-encoding pass, but at quality 80–85 the WebP is visually identical to the JPG while being roughly 30% smaller.
- Can WebP store transparency?
- Yes, WebP has an 8-bit alpha channel, but a JPG source has none — the WebP output will be opaque unless you edit alpha in later.
- Is WebP good for print?
- Rarely. Most print RIPs still expect TIFF or high-quality JPG. WebP is designed for screens.
- How much smaller will my file be?
- For photos, expect a 25–35% reduction at equal visible quality. Line art and flat graphics can shrink much more — sometimes 60–70%.
- What quality should I pick?
- 80 for hero images, 75 for thumbnails, 90+ for anything that will be inspected closely. Below 60 the smart predictor still holds up but you may see softness.
- Does WebP replace the need for a CDN?
- No. A CDN reduces latency; WebP reduces bytes. Combined they are the classic Core Web Vitals fix.
- Will Google index WebP images?
- Yes. Googlebot has indexed WebP since 2014 and the format is preferred in the PageSpeed Insights image recommendations.
JPG vs WebP at a glance
| Property | JPG source | WebP output |
|---|---|---|
| Compression | Lossy DCT | Lossy VP8 (smarter block predictor) |
| File size at equal quality | Baseline | 25–35% smaller |
| Transparency | No | Yes (unused from JPG) |
| Browser support | Universal | Chrome/Firefox/Edge/Safari 14+ |
| Best used for | Universal compatibility | Modern web performance |
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References: Google WebP specification (developers.google.com/speed/webp), Can I Use browser support tables, web.dev image format guide.