JPG to WebP Converter
Convert JPG photos to WebP to make web pages lighter. At similar visual quality a WebP is often a quarter to a third smaller than the JPG it came from, which adds up quickly across a gallery or a product catalogue. Conversion runs in your browser, so the photos never leave your device.
Drop JPG photos here
Or paste with Ctrl+V (Cmd+V on a Mac). Accepts PNG, JPG, JFIF, WebP, AVIF, HEIC, GIF and BMP. Nothing is uploaded.
How to convert JPG to WebP
- Add your JPGs. Drop in one photo or a batch, or click Pick files.
- Set the quality. WebP is already selected. 75 to 85% suits most photographs on the web; go higher for images with fine text.
- Convert and compare. Click Convert. Every file shows its size before and after, so you can see the saving straight away.
- Download. Save the WebP files one at a time, or all of them as one ZIP.
JPG and WebP compared
| Feature | JPG | WebP |
|---|---|---|
| Transparency | No | Yes, full alpha channel |
| Animation | No | Yes |
| Compression | Lossy | Lossy or lossless |
| Typical file size | Small for photos; text and sharp edges compress badly | Often 25 to 35% smaller than JPG at similar quality |
| Support | Universal | All current browsers; most up-to-date apps |
| Best for | Photos, email, upload forms | Images on websites |
It works in Safari too
Safari displays WebP but cannot save it from a web page, and many online converters quietly hand Safari users a PNG with a .webp name. This page checks what the browser actually produced. Where the browser cannot encode WebP, it loads libwebp, Google's own WebP encoder compiled to WebAssembly, the first time you convert, and the encoding still happens on your device. Chrome, Edge and Firefox use their built-in encoder.
Converting a JPG is a second compression
A JPG has already been through lossy compression once, and WebP compresses it again. At sensible settings the result looks the same, but the losses stack, so start from the highest-quality JPG you have and convert once, rather than chaining conversions. If you still have the camera original or a PNG master, convert that instead.
Occasionally the WebP comes out larger, usually when the JPG was already heavily compressed or the quality is set very high. The before and after sizes make that obvious; keep the JPG in that case.
Things worth knowing
- Metadata such as EXIF, including GPS location, is removed. That is usually what you want before publishing photos online.
- Colours are converted to standard sRGB, which is what web browsers assume anyway.
- WebP is fine for websites but still unreliable in email clients and some documents, so keep the JPG for those.
Questions people ask
Are my images uploaded anywhere?
No. Your browser decodes and re-encodes each image on your own device, so there is no server to upload to and nothing is stored. The page does fetch extra code from this site the first time you use certain features (the ZIP download, PDF output, a WebP encoder for browsers without one, and the HEIC decoder), but your images are never part of those requests.
How much smaller will my images be?
Commonly 25 to 35% at similar visual quality, sometimes more at lower settings. It depends on the photo and how heavily the JPG was already compressed; each file's saving is shown after conversion.
What quality setting should I use?
Around 80% is a good starting point for photographs. Compare the result at full size; if you cannot see a difference, try 75%. Images containing text or logos need 90% or more.
Should I use WebP or AVIF?
AVIF usually compresses further but encodes slowly and has patchier support in software. WebP is the safer default. This tool produces WebP, not AVIF.
Do I still need the JPGs?
Keep them. Some email clients, older apps and upload forms reject WebP, and the JPG is your higher-quality source if you ever need to convert again.
If something goes wrong
The WebP is larger than the JPG
Lower the quality a few points and convert again. If it is still larger, the JPG was already efficient; keep it.
Fine text or edges look smudged
Raise the quality to 90% or more. For screenshots, PNG to WebP from the original PNG gives cleaner results.
Conversion pauses before the first file in Safari
That is the WebP encoder, about 100 KB, downloading once. Later files convert straight away.
Built by Dr. Dulan Dias. Last tested , converting real files end to end in the browser.
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