Free · no signup · never uploaded
JPG to WEBP Converter
Convert a JPG to a smaller WebP right in your browser — adjustable quality, no upload, no watermark.
Short answer
To convert JPG to WebP, drop your JPG below, pick a quality, and download the WebP. WebP files are typically 25–35% smaller than the same-quality JPG, which speeds up your site. It all runs in your browser — your image is never uploaded.
Why convert JPG to WebP?
WebP was built for the web: at a matched quality it is usually 25–35% smaller than JPG, so pages load faster and use less bandwidth. Every modern browser supports it. If you’re optimizing images for a website or app, WebP is almost always the better delivery format.
Choosing a quality
WebP quality works like JPG’s: around 75–85% is the sweet spot where files get much smaller with no visible loss. Drop it lower to hit a strict size budget, or raise it toward 100% for near-lossless output when detail matters more than bytes.
JPEG quality settings
| Quality | File size | Best for |
|---|---|---|
| 95–100% | Very large | Archiving, further editing |
| 85–90% | Large | Printing, high-detail photos |
| 75–80% | Moderate | Web and sharing — the usual sweet spot |
| 60–70% | Small | Thumbnails, previews |
| Below 50% | Very small | Visible blocking and haloing |
JPEG quality is not a percentage of anything visible — it controls how aggressively detail is discarded. Every re-save at any quality loses a little more, so always edit from the original rather than repeatedly re-saving a JPG.
How we calculate this
Conversion happens locally in your browser — here is exactly how:
- Decode. your JPG is decoded to a bitmap in the browser (via createImageBitmap) — never uploaded to any server.
- Draw. the bitmap is drawn to an HTML canvas at its original dimensions.
- Encode. the canvas is exported with canvas.toBlob('image/webp') at your chosen quality, producing the downloadable WebP.
Assumptions
- Everything runs client-side; large images are limited only by your device's memory.
- Lossy WebP discards some detail on encode; keep quality high to minimize it.
- WebP is typically 25–35% smaller than an equal-quality JPG.
Last reviewed: July 19, 2026
Frequently asked questions
How do I convert a JPG to WebP?+
Drop your JPG in above, set a quality, and download the WebP. The conversion runs entirely in your browser, so your image is never uploaded. It takes a second and works offline once the page has loaded.
How much smaller is WebP than JPG?+
At the same visual quality, WebP is usually 25–35% smaller than JPG thanks to more modern compression. The exact saving depends on the photo, but for most images the file drops noticeably with no visible change.
Do all browsers support WebP?+
Yes. Every current version of Chrome, Firefox, Safari, and Edge displays WebP. It's the recommended image format for the web. Very old software may not open it — convert back to JPG or PNG if you hit that.
Is WebP lossy like JPG?+
It can be either. This tool uses lossy WebP with an adjustable quality, just like JPG, so you trade a little detail for a much smaller file. Set the quality high (85–95%) to keep the loss invisible.
Are my images uploaded?+
No. The converter runs 100% in your browser using the HTML canvas, so your JPG never leaves your device. Nothing is stored or sent to a server.
Can I convert several JPGs at once?+
This tool handles one image at a time so you can tune the quality per file and preview each result. Convert and download one, then drop in the next — no reload needed.
Related tools
- WEBP to JPG — go the other way, back to JPG.
- Image resizer — resize before converting for an even smaller file.
Images are converted entirely in your browser and never uploaded. WebP is lossy — keep the quality high to preserve detail.