Convert JPG to WebP
Make your photos smaller and your web pages faster.
This is a free online tool that allows you to convert JPG images to WebP. Upload the .jpg or .jpeg file, choose the compression quality, compare the file sizes and download the converted image.
WebP uses a much more modern codec than JPEG, which dates from 1992. For the same visual quality it typically produces files 25% to 35% smaller, and the saving comes for free: the image keeps its dimensions, and every browser in use today can display it.
If you are optimising a website, images are usually the heaviest thing on the page, so converting your JPEGs to WebP is one of the quickest wins available for the loading time and for Core Web Vitals.
Everything runs directly in your browser. No downloads or installations required. Your images are never uploaded to a server.
Drop your image here
How to convert a JPG image to WebP?
To convert a .jpg or .jpeg file to the WebP format, follow these simple steps:
- Upload the JPG image - Drop or select the file you want to convert. You can also paste an image from the clipboard with CTRL+V.
- Choose the quality - Move the quality slider and watch the file size change. The canvas always shows the real WebP, so you can judge the compression with your own eyes instead of guessing.
- Check how much you saved - The table compares the original JPG with the WebP, and the line below it tells you the percentage.
- Download the WebP image - Click "Download WebP image" to save the converted file.
Use the "View original image" switch above the canvas to compare the WebP with the JPG you uploaded.
Settings
Below are the parameters you can configure when converting a JPG image to WebP.
| Field | Description |
|---|---|
| Quality | The quality of the WebP compression, from 1 to 100. Because your source is already a JPEG, the two compressions stack: 80 to 85 keeps the result indistinguishable from the original for photos. WebP quality numbers are not equivalent to JPEG quality numbers, so do not simply copy the value the JPG was saved with. |
| Keep transparency | WebP supports an alpha channel. A JPG has no transparent pixels, so this option changes nothing unless you are converting some other format. Turn it off to paint a solid color behind the image. |
| Background color | The color drawn behind the image when "Keep transparency" is turned off. |
JPG vs WebP
Both store photographs with lossy compression, but WebP is roughly two decades of codec research ahead.
| JPG | WebP | |
|---|---|---|
| Compression | Lossy only, using 8x8 blocks and a codec from 1992. | Lossy or lossless, with block prediction borrowed from video compression. |
| File size | The baseline. | Usually 25% to 35% smaller at the same visual quality. |
| Transparency | No. | Yes. |
| Animation | No. | Yes. |
| Support | Universal, including software older than the web. | Every browser since 2020, plus Android and iOS. Some older desktop programs still cannot open it. |
| Best for | Sharing, printing and anything that must open everywhere. | Photos published on a website or in an app. |
Frequently Asked Questions (FAQ)
Are my images uploaded to a server?No. All the processing is done in your browser, so your images never leave your computer.
Is this JPG to WebP converter free to use?Yes, this tool is 100% free and works directly in your browser, with no installation and no sign-up required.
Which quality should I choose?For photographs, 80 to 85 is the sweet spot and is what this tool starts with. Remember that the JPG you are uploading has already been through one round of lossy compression, so a very low WebP quality compounds the damage quickly. For images with text or sharp edges, use 90 or above. The preview shows the actual encoded file, so trust your eyes rather than the number.
How much smaller will the WebP be?For a typical photograph, expect 25% to 35% at matched quality, and often more if the JPG was saved at a high quality by a camera or a phone. The comparison table gives you the exact figure for your image.
Do all browsers support WebP?Yes. Chrome, Edge, Firefox, Safari and Opera all support it, as do Android and iOS. Safari was the last holdout and added support in 2020. For the web, WebP is safe to use without a fallback.
Does the conversion lose quality?A little, since WebP is being applied on top of JPEG compression. At quality 80 and above the loss is not visible at normal viewing size, which is why the saving is usually worth it. Keep the original JPG if you might need to re-edit the image later.
Why is my WebP file sometimes larger than the JPG?This happens with small images, with graphics that have very few colors, and when you set the quality close to 100, where WebP stops being efficient. If the table shows the file growing, lower the quality, or simply keep the JPG.
Should I convert to WebP or to AVIF?AVIF compresses even better than WebP, but it encodes slowly and is not yet supported everywhere. WebP is the safer default today, and it is what this tool produces.
Can I convert several images at once?This tool converts one image at a time. To convert another image, reload the page and upload the next file.
Does the converted image have the same dimensions?Yes. The width and height are unchanged, only the format and the file size are different. If you are optimising a page, serving the image at the size it is actually displayed saves even more, so combine this with the Resize image tool.