Convert JPG to WEBP
Quietly. In your browser. No upload.
Drop your .jpg file
or click to browse · max 50MB
or paste with ⌘V
Converting JPG to WebP is one of the most direct wins available for web image optimization. WebP at quality 90 typically produces files 25–35% smaller than equivalent JPGs at the same visual quality — without any change to the image's content or composition. For sites with heavy image traffic, that's a meaningful reduction in page weight and a meaningful improvement in Core Web Vitals.
When you'd use it
Cut site weight without redesigning
You've got a folder of JPG hero images on your website and the site feels sluggish. Re-encoding the lot as WebP can reduce total image weight by ~30% without any other change.
Improve Core Web Vitals
Largest Contentful Paint (LCP) is gated by image weight. Smaller WebP files mean faster LCP, which means better SEO ranking signals and a lower bounce rate.
Keep your JPG, add a WebP
With the HTML <picture> element you can serve WebP to modern browsers and JPG as a fallback. Converting your JPGs to WebP gives you the WebP half of that pair.
How it works
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Your file never leaves the browser.
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Conversion runs locally via WebAssembly and Canvas.
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Download. No account, no history.
Technical notes
This converter uses Canvas's toBlob with the WebP encoder, which produces lossy WebP at the quality you've set. Visual quality at 90 is essentially indistinguishable from the source JPG; quality 85 is good enough for most content; below 80 you start to see compression artifacts in detail-heavy images. JPG is already lossy, so the WebP you produce is doubly lossy compared to the original camera output — but the additional loss from this conversion is minimal at quality 90+. EXIF metadata is not preserved by Canvas; if you need to keep camera metadata, use a dedicated metadata-preserving tool first.
Frequently asked
What happens to my JPG files?
Nothing leaves your browser. The conversion runs locally on your device using WebAssembly and the Canvas API. No file is uploaded to a server — including ours.
Is the converted WEBP identical to the original?
WEBP is a lossy format. The output is visually very close to the original at quality 90+ and considerably smaller. Use the quality slider above to trade size for fidelity.
Is there a file size limit?
There is no hard cap, but very large files (hundreds of MB) may be slow on older devices because everything happens in your browser's memory.
Do you collect data on my file or my use?
Your file is invisible to us — it never leaves your browser. For aggregate page-view counts we use Cloudflare's server-side edge logs (no JavaScript beacon runs in your browser). We display Google AdSense ads on conversion result pages; the AdSense script loads on every page and may set advertising cookies after you accept the consent banner (Google Consent Mode v2 asks first). The ads see the page URL and standard browsing signals — they never see your file, because the file never leaves your device.
How much smaller will the WebP be?
For typical photographic JPGs, WebP at quality 90 is 25–35% smaller. For images with fine detail or text, the gap is smaller. For very simple graphics with large flat color areas, WebP can be 50%+ smaller.
Should I delete my JPGs after converting?
Not yet. Some workflows still don't speak WebP — older email systems, certain CMS plugins, niche editing apps. If you're optimizing images for a website, keep the JPG as a fallback in your <picture> tag and serve WebP to browsers that support it.