Should I convert my website's JPGs to WebP, and at what quality?
Usually yes, if your site platform accepts WebP: it normally produces a smaller file that looks close to the JPG, which helps pages load faster. Start at quality 80 in the converter, compare the before and after sizes in each file's row, check the preview, and keep JPG copies for places that do not take WebP.
Three questions before you convert
- Does your site platform accept the WebP files the Image format converter produces? Check its image upload page or help center. Some platforms already convert images for you, in which case converting by hand gains nothing.
- Where else will these images go? Newsletters, some marketplaces and office software may not accept WebP, so keep a JPG copy for them.
- Are the dimensions sensible? A 4000 pixel wide image shown in an 800 pixel slot stays heavy even after conversion. Resize it first with the Image resizer.
Choosing the quality
The quality slider runs from 1 to 100 and defaults to 90. Internally, 80 becomes 0.8 and is handed to your browser's WebP encoder. No single value is right for every picture, so test on a sample that represents your site: a product on a white background, an image with text in it, and one with smooth color gradients.
- 90: very close to the original, smaller savings.
- 80: a good starting point for product images on the web.
- 70 and below: bigger savings, but inspect edges, text and gradients closely.
How to read the result: a 507.8 KB JPG saved as WebP at quality 80 came out at 185.5 KB.
The file's row reads: 63.5% smaller than the original.
Results vary from image to image, so go by the numbers you see rather than this example.
Converting a whole batch
Add up to 30 images at a time, choose WebP and set the quality you settled on. Each image gets its own row with its dimensions, the format change and the size before and after, and a summary line counts what was converted, left as is or failed. Then download everything as one ZIP. Names stay the same with a .webp extension, so if your pages reference images by file name, remember to update those links too.
If you see a message that your browser cannot encode WebP, try another up-to-date browser. The tool will not hand you a file in the wrong format in that case.
Should I delete the old JPGs?
No. WebP conversion is lossy, and the original JPG is the archive to return to if you later want a different quality. Converting from the original each time is cleaner than converting from a converted copy. And if you want smaller JPGs that stay JPG, that is a job for the Image compressor, not the format converter.
Common questions
Do transparent PNGs stay transparent as WebP?
Yes. WebP keeps transparency, and the background color option only appears for JPEG.
Are my site images uploaded anywhere while converting?
No. Everything happens inside your browser.