Convert JPG to WebP Online — Free
Convert JPG to WebP for 25-35% smaller files at matched visual quality. Browser-based, adjustable quality, no signup required.
How to convert JPG to WebP
- 1
Add your JPG file
Drop or select a .jpg file. Files up to 50MB process locally in your browser — nothing uploaded.
- 2
Run the conversion
Your JPG decodes onto a Canvas and re-encodes to WebP via the browser's native WebP encoder. WebP uses VP8 intra-frame compression, which is more efficient than JPG's DCT at the same perceived quality.
- 3
Download your WebP
One click saves the result as a .webp file. Your original file stays on your device.
Why convert JPG to WebP?
WebP cuts page weight without compromising perceived quality. Google, Cloudflare, and major CDNs serve WebP to reduce load times and bandwidth bills. For website performance, ad delivery, app bundles, or email newsletters, WebP is a better default on every modern browser — which now covers 96%+ of global users.
Common JPG to WebP use cases
- Optimizing hero images and product photos on a Next.js, WordPress, or Shopify site to improve Core Web Vitals LCP scores
- Shrinking image attachments for an email campaign (Mailchimp, SendGrid) to improve deliverability and inbox rendering speed
- Compressing gallery thumbnails in a portfolio, blog, or e-commerce site to save mobile data on readers
- Preparing images for a React Native or Flutter app bundle to reduce install size without losing visual fidelity
What file size to expect
A 2000×1333 JPG photo at quality 85 (typical web-ready export) is around 350-450 KB. The same image as WebP at quality 80 lands around 220-300 KB — roughly 30% smaller. For high-detail photos the savings can be 40%+; for flat graphics WebP can be 50%+ smaller.
Technical notes: JPG → WebP
WebP's lossy mode uses VP8's intra-frame compression, which is smarter than JPG's DCT at similar bit rates. It handles gradients with less banding and produces fewer blocking artifacts at aggressive compression. WebP supports both lossy and lossless modes; this converter produces lossy WebP (the right choice for photos). For screenshots or graphics with sharp edges you may prefer lossless WebP (25-30% smaller than PNG). Canvas-based conversion drops EXIF and ICC color profiles in both modes.
Compatibility and browser support
WebP support is broad: Chrome 23+, Firefox 65+, Safari 14+ (including iOS 14+), Edge 18+, and Opera 12.1+. Global coverage exceeds 96% per caniuse. Older Safari (iOS 13 and below) and Internet Explorer don't decode WebP — serve a JPG fallback via a <picture> element for those users.
JPG vs WebP
| JPG | WebP | |
|---|---|---|
| File size | Smaller (lossy) | Smallest at equivalent quality |
| Quality | Lossy (adjustable) | Lossy or lossless |
| Transparency | No | Yes |
| Browser / app support | Universal | Modern browsers (Chrome, Firefox, Safari, Edge) |
| Best for | Photographs, web images, sharing | Web images, performance-focused sites |
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Frequently Asked Questions
How much smaller will the WebP be?
Typically 25-35% at matched visual quality, sometimes up to 50% for high-contrast graphics. Actual savings depend on image content — photos with fine detail save less than flat graphics.
Can I use WebP everywhere?
In Chrome, Firefox, Safari 14+, Edge, and Opera — yes. iOS 13 and earlier Safari can't decode WebP; use a <picture> element with JPG fallback for those users.
Lossy or lossless WebP?
This converter produces lossy WebP, the right choice for photos. Quality is adjustable via the slider (default 80).
Will the WebP still look as good?
At quality 80 the visual difference from the source JPG is imperceptible at normal viewing distances. Gradients look better in WebP than JPG at equivalent bit rates.
Does it preserve transparency?
JPG has no transparency to preserve. If you need alpha, convert PNG → WebP instead — WebP supports alpha in both lossy and lossless modes.
Will EXIF or ICC profiles survive?
No — Canvas-based conversion drops all metadata including EXIF, GPS, and ICC color profiles. For metadata preservation, use a desktop tool like cwebp with -metadata flags.