Convert JPG to WebP
The reason is page weight, and the honest framing is that you are trading a small amount of quality for a meaningful amount of bandwidth. WebP compresses better than JPEG at the same visual quality, which for a page carrying a dozen photographs is the difference between a site that feels quick on a phone and one that does not.
Drop your JPG files below and download WebP in seconds. Free, unlimited and completely private: the conversion runs inside your browser, so your files never leave your device and are never uploaded to a server.
No upload. Works with your network switched off. Check it yourself, or read what actually happens to your file.
Why convert JPG to WebP?
The catch specific to this pair is that the JPG has already been compressed once. Converting means decoding that result and compressing it again with a different codec, so the losses stack. If you still have the camera original or the export from your editor, convert from that instead and you get the size saving without the second pass.
JPG has been the default photo format since the nineties and opens everywhere, from ancient office software to modern phones. Its lossy compression shrinks photos dramatically while keeping them looking good at normal viewing sizes. It cannot store transparency, so transparent areas are filled with a solid background.
Google designed WebP to replace both JPG and PNG on the web, and it typically compresses 25 to 35 percent smaller at similar quality. It handles both lossy and lossless modes and supports transparency. Support is excellent in browsers but still patchy in older desktop software.
What this converter does to your JPG file
Your browser decodes the JPG and re-encodes it as WebP in lossy mode at the quality you choose, defaulting to 0.9. Since both formats are lossy this is a second encode, and JPEG artefacts already present in the source are treated as image detail and faithfully preserved by the WebP encoder, which is why converting an aggressively compressed JPG rarely produces a good WebP. There is no transparency to consider: JPG has no alpha channel. EXIF and colour profile are not carried across.
JPG vs WebP at a glance
| JPG | WebP | |
|---|---|---|
| Full name | JPEG image | WebP image |
| Compression | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Best for | Photos and general web images | Modern websites and apps |
What changes when you convert JPG to WebP
| What happens | |
|---|---|
| Image quality | Reduced. JPG is already lossy and WebP compresses again, so this is a second encode. Nothing is recovered, and at low quality settings the losses stack. |
| Transparency | JPG has no alpha channel, so there is no transparency to lose. |
| EXIF and GPS | Removed. The conversion goes through a pixel buffer, so camera data and location are not carried into the WebP file. |
| Colour profile | Not carried across. The image is handled in sRGB, which is right for the web and wrong for colour-managed print work. |
| Animation | Not applicable. JPG files here are single images. |
| File size | Smaller in almost every case, which is the reason for the conversion. How much smaller depends on the picture, so no figure is quoted here. |
How to convert JPG to WebP
- Drop one or more JPG files into the box above, or click to browse.
- ImageConvert converts each file to WebP right on your device.
- Download a single file, or grab everything at once as a zip.
Frequently asked questions
Does converting JPG to WebP lose quality?
Yes, a second time. The JPG was already lossy and WebP compresses again. At a high quality setting the extra loss is very difficult to see, but it is real and it cannot be undone.
Should I convert from the JPG or from the original?
From the original if you have one. Converting from a JPG bakes the first encoder's artefacts into the source that the second encoder then has to reproduce, which wastes bits on flaws.
How much smaller is WebP than JPG?
Google publishes 25 to 34 percent smaller at equivalent quality for its own comparison. Your result depends on the picture and on the quality setting, so no single figure is quoted here.
The 25 to 34 percent figure quoted above is Google's own comparison of lossy WebP against JPEG at equivalent quality, published at developers.google.com/speed/webp.
What is a JPG file?
JPG (JPEG) is the most common photo format, using lossy compression for small file sizes.
What is a WebP file?
WebP is a modern format from Google that compresses smaller than JPG and PNG while keeping quality.
Is it free to convert JPG to WebP?
Yes. There are no limits, no watermarks and no account needed. Convert as many JPG files as you like.
Are my files private?
Completely. Your JPG files never leave your browser and are never uploaded to a server, so your images stay on your device.