How to convert JPG to WebP
- 1
Drop your JPG file into the converter above, or click to browse. Nothing is uploaded — the file stays on your device.
- 2
Adjust the settings (quality and an optional max width). Tip: Quality 80 is the classic web sweet spot for photos — indistinguishable at normal viewing size, with maximum savings.
- 3
Click “Convert to WebP”. The conversion runs locally in your browser — larger files take longer, and a progress bar keeps you posted.
- 4
Preview the result and hit Download to save your WebP file.
Why convert JPG to WebP?
For photographic content, WebP's compression is simply a generation ahead of JPG: at equivalent visual quality the files come out roughly a quarter to a third smaller. Multiply that across every image on a page and the load-time difference is substantial.
Image weight is usually the single largest contributor to Largest Contentful Paint, a Core Web Vitals metric that feeds into search ranking. Converting your JPGs to WebP is one of the highest-leverage page-speed optimizations available, and every modern browser supports it.
JPG vs WebP at a glance
| JPG | WebP | |
|---|---|---|
| Type | Raster image | Raster image |
| Compression | Lossy, small files | Lossy or lossless, ~30% smaller than JPG/PNG |
| Transparency | No | Yes (full alpha) |
| Compatibility | Universal | All modern browsers; some apps/uploaders still reject it |
| Best for | Photos, email attachments, maximum compatibility | Web images, page-speed optimization |
About the formats
JPG JPEG (Joint Photographic Experts Group)
JPG is the universal photo format. Its lossy compression shrinks photographs dramatically with little visible quality loss, and every device, website, and app on earth can open it. It doesn't support transparency, and re-saving repeatedly degrades quality.
WebP WebP (Google)
WebP is Google's modern web image format. It compresses roughly 25–35% smaller than JPG at equivalent quality, supports both lossy and lossless modes, and keeps full alpha transparency. All modern browsers display it, though some older apps and upload forms still reject it.
Frequently asked questions
What quality setting should I use for photos?
80 is the widely used default for web photos — visually clean with strong compression. Use 85–90 for hero images you'll show large, and 70–75 for thumbnails where small artifacts won't be noticed.
Does converting JPG to WebP lose quality?
Both formats are lossy, so re-encoding technically involves loss — but WebP at quality 80+ reproduces the JPG so closely the difference isn't visible at normal viewing sizes. Keep your original JPGs as masters and use WebP for delivery.
Is this JPG to WebP converter really free?
Yes — completely free, with no watermarks, no sign-up, and no conversion limits. The tool is supported by ads on this page, so the converter itself never asks you for anything.
Are my files uploaded to a server?
No. This converter runs entirely in your browser using WebAssembly (a browser build of FFmpeg). Your JPG file never leaves your device — nothing is uploaded, stored, or seen by us, which also makes it safe for private or confidential files.
Is there a file size limit?
There's no hard limit. Because conversion happens on your own device, the practical ceiling is your browser's memory — files up to a few hundred megabytes work well on most computers. Very large files may be slow or fail on low-memory devices.
Why does the first conversion take a moment to start?
The first time you convert, your browser downloads the conversion engine (about 31 MB) once. It's cached after that, so later conversions start instantly — and they keep working even offline.
Related converters
See all converters on the free online tools page.
Making videos? Grab free assets too
ANFX offers a library of free 4K motion graphics, overlays, and stock video — no attribution required.
Browse free stock video