Convert JPG to WebP
Turn JPEG photos into smaller WebP images for faster websites
Private by default · files deleted in 24hCapterra Best Ease of Use 2025
Real example: what you get
We converted three test images with our JPG to WebP converter at its default settings and measured the files that came out. Measured on .
| Test image | File size, JPG → WebP | Quality |
|---|---|---|
| Photo | 454.0 KB → 349.3 KB23% smaller | Looks the same at normal size |
| Test chart | 140.8 KB → 56.6 KB60% smaller | Looks the same at normal size |
| Text and graphics | 165.8 KB → 98.4 KB41% smaller | Looks the same at normal size |
Photo
JPG and WebP side by side, zoomed in 4x
A nature photo of the Isar river in Munich: water, leaves, sky and a stone bridge. Made from our lossless PNG original, scaled down from 2400 x 1600 to 1600 x 1067 px, with our PNG to JPG converter at its default settings.
Original
Converted- Quality
- Looks the same at normal size. Detail score 0.945 (1 = identical), measured in the busiest 5% of the image.
- Compression
- Lossy at every quality setting we measured, 100 included: some pixels change slightly.
- Color detail
- Stored at half resolution: thin colored text can look slightly smudged.
Original JPG
Converted WebP
The same photo at other WebP quality settings
| Quality | WebP file | What you see | Color detail |
|---|---|---|---|
| 60 | 303.8 KB, 33% smaller | Slight softening in fine detail | Half |
| 75 (default) | 349.3 KB, 23% smaller | Looks the same at normal size | Half |
| 90 | 568.9 KB, 25% larger | Looks the same at normal size | Half |
| 100 | 899.1 KB, 98% larger | Looks the same at normal size | Half |
Each size opens that file.
Test chart
JPG and WebP side by side, zoomed in 4x
A test chart: color bars, a gray wedge, smooth gradients, fine line pairs and colored text. Made from our lossless PNG original, with our PNG to JPG converter at its default settings.
Original
Converted- Quality
- Looks the same at normal size. Detail score 0.974 (1 = identical), measured in the busiest 5% of the image.
- Compression
- Lossy at every quality setting we measured, 100 included: some pixels change slightly.
- Color detail
- Stored at half resolution: thin colored text can look slightly smudged.
Original JPG
Converted WebP
The same test chart at other WebP quality settings
| Quality | WebP file | What you see | Color detail |
|---|---|---|---|
| 60 | 50.5 KB, 64% smaller | Looks the same at normal size | Half |
| 75 (default) | 56.6 KB, 60% smaller | Looks the same at normal size | Half |
| 90 | 86.4 KB, 39% smaller | Looks the same at normal size | Half |
| 100 | 134.2 KB, 5% smaller | Looks the same at normal size | Half |
Each size opens that file.
Text and graphics
JPG and WebP side by side, zoomed in 4x
A card with text from 12 to 78 px, colored badges, a thin-line chart, text over a photo and transparent rounded corners. Made from our lossless PNG original, with our PNG to JPG converter at its default settings. JPG has no transparency, so its corners came out white.
Original
Converted- Quality
- Looks the same at normal size. Detail score 0.946 (1 = identical), measured in the busiest 5% of the image.
- Compression
- Lossy at every quality setting we measured, 100 included: some pixels change slightly.
- Color detail
- Stored at half resolution: thin colored text can look slightly smudged.
Original JPG
Converted WebP
The same text and graphics at other WebP quality settings
| Quality | WebP file | What you see | Color detail |
|---|---|---|---|
| 60 | 84.5 KB, 49% smaller | Slight softening in fine detail | Half |
| 75 (default) | 98.4 KB, 41% smaller | Looks the same at normal size | Half |
| 90 | 166.6 KB, about the same size | Looks the same at normal size | Half |
| 100 | 283.1 KB, 71% larger | Looks the same at normal size | Half |
Each size opens that file.
How we measured
Each test image goes through the same converter you use on this page, with its default settings. We then compare the file that comes back with the file that went in, pixel by pixel, both decoded at full size. "Pixel-identical" means every pixel matches.
The quality words come from SSIM, a standard score for how alike two images look, taken in the busiest 5% of each image so that a calm sky cannot hide damaged detail. We set the thresholds by looking at zoomed-in crops of the same images.
The test images are our own: a photo we took and a test chart and text card we drew. We measure again whenever the converter changes.
Convert JPG to WebP from your AI agent
- Ask your agent: “Convert image.jpg to WebP with Conversion Tools.”
- It runs this same converter, so you get the same result
- Right from your workflow, no browser needed
Connect it to:
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- Describe the result you want in plain words, no coding
- Other columns, a different layout, or a format we don't list
- Test it on your own file before you use it
- Free to build and test, then runs on your plan's limits
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- Conversion time varies by file size; thank you for your patience.
- Limits apply to maximum conversions and file size. See available plans on the Pricing page.
- Unregistered users: up to 5 conversions/day, up to 50 conversions/month, and 10 MB per file. Sign up to extend your limits.
- Need help converting files? Contact us.