How to convert JPG to WebP
- 1
Click Choose files or drag your JPG/JPEG images into the box.
- 2
Adjust the Quality if needed — the default 82% is a good balance for websites.
- 3
Click Convert, compare the sizes, then download each WebP or everything with Download all (ZIP).
Why use WebP on your website?
Images are usually the heaviest part of a web page. Lighter images load faster, especially on mobile connections, which helps visitors stay and contributes to good Core Web Vitals scores such as Largest Contentful Paint. Tools like Google PageSpeed Insights regularly suggest serving images in modern formats like WebP for this reason.
WebP was designed by Google for exactly this job. For photographs it typically produces files 25–35% smaller than JPG at the same visual quality, and unlike JPG it also supports transparency and animation.
| JPG | WebP | |
|---|---|---|
| Typical size for the same photo | Baseline | 25–35% smaller |
| Transparency | No | Yes |
| Browser support | Universal | All current browsers |
| Support in older desktop software | Universal | Partial |
Choosing the quality
The Quality slider defaults to 82%. That’s a sensible value for most photos on websites and online shops. A few guidelines:
- 85–90% for hero images, portfolios and photos where detail matters.
- 75–82% for blog posts, product listings and galleries.
- 60–70% for thumbnails and background images.
Check the result in a browser at 100% zoom. If you notice blurring in fine textures or blotches in skies, raise the quality a few points.
Tips for web images
- Resize first. A 4,000-pixel photo displayed at 1,200 pixels wastes most of its weight whatever the format. Use Resize image — it can output WebP directly — then fine-tune here if needed.
- PNG graphics too? Convert them with PNG to WebP to keep transparency at a fraction of the size.
- Keep a JPG fallback for email newsletters and places where WebP may not be accepted. You can always go back with WebP to JPG.
Using WebP images on your site
- WordPress accepts WebP uploads in the media library.
- Shopify, Wix and Squarespace accept WebP images, and some of them also generate optimised versions automatically — uploading a lighter file still helps.
- Hand-coded sites can use the
<picture>element to serve WebP with a JPG fallback, though every current browser reads WebP directly.
Converted on your device
Unlike most online converters, TurboConvert doesn’t upload your images. The JPG is decoded and the WebP is encoded by your own browser, so even a batch of hundreds of photos for an online shop is processed without waiting for uploads, and your unpublished images stay private.