JPG to WebP Converter — Free Online
Re-encode JPG photos as WebP to cut page weight for faster sites, usually by a quarter to a third at the same visible quality. Each file shows its before and after size so you can confirm the saving before downloading. Nothing is sent to a server.
How to use the jpg to webp converter
- Add your .jpg or .jpeg files to the drop area.
- Pick a quality level — 80–85% suits most photos.
- Download the WEBP versions and swap them into your site.
How much smaller, realistically
For photographs at matched visual quality, WebP is typically 25–35% smaller than JPG. That is a real saving but a smaller one than converting from PNG, because JPG is already a lossy format doing a competent job — you are gaining from a better encoder, not from fixing a format mismatch. On a page with thirty product photos it still adds up to hundreds of kilobytes.
The saving is larger on images with flat areas, gradients or graphic elements, where WebP's encoder has more to work with than JPG's. It is smaller — occasionally negative — on grainy or heavily textured photographs and on JPGs that were already saved at low quality, where there is little redundancy left to exploit. Watch the before and after sizes for each file; if a particular image does not shrink, keeping the JPG is the right call.
Converting without visible loss
This is a lossy-to-lossy conversion, so choose the quality level with the source in mind. 85% is a safe default for a good-quality JPG straight from a camera or phone. If the original was already compressed hard — a photo saved from a chat app, a file that has been through several rounds of resizing — start at 90% or above, because a second aggressive pass over existing artefacts is what produces the blotchy result people blame on WebP.
Keep your JPG originals. WebP should be the delivery copy on your website, not your archive: if you ever need to re-crop, re-export at a different size or hand the image to a printer, you want to start from the least-compressed version you have rather than from the web-optimised one.
Core Web Vitals and product galleries
Product listing pages with twenty-plus JPG thumbnails are a common LCP and CLS problem — each image is small individually but the total weight adds up. Re-encoding the gallery as WebP at 80–85% often drops total page weight by a third without a visible change on phone screens, which is enough to move a “needs improvement” LCP score into green on field data.
Watch the per-file size readout. Grainy or already-heavily-compressed JPGs sometimes grow slightly as WebP when there is nothing left to exploit — keep those as JPG rather than forcing a format change for its own sake.
Frequently asked questions
Drop .jpg or .jpeg files in, set quality (80–85% suits most photos), and download WebP. The JPG to WebP converter runs in your browser with no upload.
It is a second lossy pass. At 80–85% the change is rarely visible. Convert from the original photo when you can, not from a heavily compressed JPG.
Yes. WebP is often 25–35% smaller than JPG at the same look, which helps page weight and Largest Contentful Paint.
Rarely. Modern browsers have supported WebP since Safari 14 (2020). Keep a fallback only if analytics show very old clients.
Yes. Re-encoding through the canvas drops EXIF (including location). Orientation is applied to pixels first so images stay upright.
Yes — up to 20 files. Batch JPG to WebP on your device, then download all.
Yes. No signup, no watermark, and files are not uploaded — conversion stays in the tab.
Convert JPG to WebP for websites and apps that accept WebP. Keep JPG for email clients or systems that still reject WebP.
Start around 80–85%. Raise it for hero images; lower it slightly if you need even smaller files.
Yes. The page works in mobile Safari and Chrome. Pick photos from your library and download the WebP results.
Related tools
- JPG to PDF ConverterDrop one JPEG or a whole folder of photos and build a single PDF on your device.
- PNG to WebP ConverterWebP is the fastest way to make heavy PNGs load quicker on a website without a visible drop in quality.
- WebP to JPG ConverterTurn WebP images into JPG files that any device, printer or upload form will accept.
- JPG to PNG ConverterConvert JPG files to PNG when you need a format that supports transparency, survives repeated editing, or is required by a tool that refuses JPG.
Runs entirely in your browser — your files and text never leave this device. Last reviewed August 17, 2026.