How to Convert JPG to WebP on iPhone
JPG (also written JPEG) is the most widely supported photo format. Drop your JPG file into the converter below and it becomes a WebP straight away, right on your iPhone – nothing is uploaded.
Drop JPG files here or browse
Accepts HEIC, WebP, PNG, JPG, BMP, GIF and SVG · multiple files · nothing is uploaded
Converted on your device. Your photos never leave your browser.
Step by step: Convert JPG to WebP on iPhone
- 1
Open this page in Safari (or Chrome) on your iPhone or iPad.
- 2
Tap the box above. Choose Photo Library to pick from Photos, or Choose File to browse the Files app (iCloud Drive, On My iPhone, Downloads).
- 3
The WebP is made as soon as the file is added. Adjust Quality if you want a smaller file.
- 4
Tap Download. Safari saves the file to Files › Downloads (tap the download arrow in the address bar to find it). To add an image to Photos, open it in Files, tap Share, then Save Image.
What changes when you convert JPG to WebP
- WebP is lossy. The Quality slider starts at 90%, which looks the same as the original for nearly every photo; lower it for a smaller file and the preview shows the new size before you download.
- Check that wherever you're uploading accepts WebP – most websites and browsers do, but some older apps and forms don't.
About JPG and WebP
- JPG (also written JPEG) is the most widely supported photo format. Its lossy compression keeps photos small, but it has no transparency and loses a little detail every time it's re-saved.
- WebP is Google's image format for websites. It supports lossy and lossless compression, transparency and animation, and is usually 25–35% smaller than an equivalent JPG – but some editing apps, older software and upload forms still reject it.
Tips for iPhone
- There's no app to install from the App Store – the tool runs inside Safari, and the file never leaves your iPhone.
JPG vs WebP
| JPG | WebP | |
|---|---|---|
| Compression | Lossy, adjustable quality | Lossy or lossless |
| Transparency | No – transparent areas become a solid colour | Yes |
| Animation | No | Yes |
| Best for | Photos you want to share, email or upload anywhere | Fast-loading images on websites |
| Support | Universal | All modern browsers; patchy in older desktop apps |
Frequently asked questions
Will I lose quality converting JPG to WebP?
At the default 90% quality the difference is practically invisible. WebP is lossy, so very low quality settings will show blur or blocky edges.
Can I convert several JPG files at once?
Yes. Add as many as you like; each converts on its own, and Download all saves them in one ZIP.
Are my photos uploaded to a server?
No. The conversion runs in your browser using your device's own processor, so your photos never leave your device. You can even disconnect from the internet once the page has loaded.
Where does the converted file go on my iPhone?
Tap Download. Safari saves the file to Files › Downloads (tap the download arrow in the address bar to find it). To add an image to Photos, open it in Files, tap Share, then Save Image.
Need more options? Open the full JPG to WebP tool →