How it works
The browser reads the file with File API, decodes via canvas or WASM codecs, then encodes to the destination mime type without network upload.
How to use JPG to WebP
- Drag or select the source image file supported by this converter.
- Adjust quality, size, or background options shown for the target format.
- Preview the output if the tool provides a side-by-side view.
- Download the converted file — it saves from browser memory, not a server.
Worked examples
Concrete numbers and cases you can check against the tool above.
Blog weight cut
A 2.1 MB hero JPEG drops to ~420 KB WebP at quality 80 with no visible banding on a 1440 px-wide layout.
When to use JPG to WebP
Serving WebP cuts bytes without rebuilding your whole asset pipeline — convert batches before deploy.
Common use cases
- Shrink hero images for a static site.
- Convert blog inline photos before CDN upload.
- Preview WebP quality next to the JPG original.
Inputs and outputs
- JPEG input
- WebP output
Privacy
This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.
Frequently asked questions
- Is EXIF metadata kept?
- Some conversions strip location EXIF for privacy; check tool notes if GPS preservation matters.
- Is there a file size limit?
- Limits come from device RAM; huge TIFFs may fail on low-memory phones.
- Does transparency survive?
- JPG never keeps alpha; choose PNG or WebP when transparency matters.