Convert JPG to WebP — Free, Private, No Upload
Convert JPG images to high-quality WebP format instantly. No upload, batch processing, free.
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How to Convert JPG to WebP
Select your JPG files
Choose files or drag and drop them into the converter. Any image format is accepted.
Convert to WebP
Conversion starts automatically with optimized defaults. Adjust quality in advanced settings.
Download
Download converted files individually or as a ZIP archive.
Why Convert JPG to WebP?
WebP produces files 25–35% smaller than JPG at equivalent visual quality, making it the go-to format for web performance. Converting your JPG images to WebP means your website loads faster, uses less bandwidth, and scores better on Core Web Vitals — all of which help with search rankings.
Google developed WebP specifically as a successor to JPG for web images. It uses more advanced compression algorithms that preserve detail better at lower file sizes. Every modern browser supports WebP, so compatibility is no longer a concern.
With LeanImg, the conversion happens entirely in your browser. Your images never leave your device — no upload, no server processing, no data collection. It is completely free with no account required.
WebP is particularly effective for photo-heavy pages where every kilobyte matters. After converting, check our compressor for fine-tuned optimization. If you want the absolute smallest files, try JPG to AVIF for next-generation efficiency.
JPG vs WebP
| Feature | JPG | WebP |
|---|---|---|
| File Size | Baseline | 25–35% smaller |
| Transparency | No | Yes |
| Compression | Lossy | Lossy or lossless |
| Browser Support | Universal | All modern browsers |
| Best For | Photos (legacy) | Photos (web) |
| Introduced | 1992 | 2010 |
Frequently Asked Questions
How to convert JPG to WebP?
Visit LeanImg in any browser, drop your JPG files into the converter, and download WebP files instantly. No sign-up is required, the tool is free, and your images are never uploaded to any server. Batch conversion lets you process multiple files at once.
Is it safe to convert JPG to WebP online?
Yes. LeanImg runs entirely in your browser using WebAssembly. Your JPG files are never uploaded to a server, never stored remotely, and never leave your device. The conversion is as private as editing images in a desktop application on your computer.
How to convert JPG to WebP on iPhone?
Open Safari on your iPhone and go to LeanImg. Tap the upload area to select JPG photos from your camera roll or files. WebP versions are created right on your phone. No app is needed — it works directly in your mobile browser.
Do all browsers support WebP?
Yes. All major browsers support WebP: Chrome, Firefox, Safari, Edge, and Opera. Safari added support in 2020 with macOS Big Sur and iOS 14. Unless you need to support very old browser versions, WebP is safe to use everywhere today.