How to Convert JPG to WebP
WebP consistently achieves 25–35% smaller file sizes than JPG at equivalent visual quality — making it the recommended format for all web images in 2025. Chrome, Firefox, Safari, and Edge all support WebP natively. Converting your JPG images to WebP before uploading to your website is one of the most impactful things you can do for page speed and Core Web Vitals scores.
Quick Answer
WebP consistently achieves 25–35% smaller file sizes than JPG at equivalent visual quality — making it the recommended format for all web images in 2025. Chrome, Firefox, Safari, and Edge all support WebP natively.
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Step-by-Step Guide
5 steps · takes under 1 minute
Open the Convert from JPG tool
Go to the Convert from JPG tool — it converts JPG (and other formats) to WebP, PNG, and other output formats in your browser.
Upload your JPG
Drag and drop your JPG file. Multiple files can be processed if you need to batch-convert.
Select WebP as the output format
Choose WebP from the format selector. WebP uses the libwebp encoder, which intelligently selects the best compression for your image content.
Set quality to 80–85%
WebP at 80% quality is visually equivalent to JPG at 85% quality, but at 25–35% smaller file size. For thumbnails and background images, 75% is sufficient.
Download and use
Download the WebP file. Upload it to your website or CMS. For WordPress, Shopify, and most modern platforms, WebP is accepted directly and served to supported browsers.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
Use 75–85% quality for web images — you get 60–80% smaller files with no visible difference at normal screen sizes.
WebP vs JPG vs PNG — Real File Sizes
Same 1080×1080px photo at equivalent visual quality
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (lossless) | Perfect | 4.2 MB | No compression loss |
| JPG (85% quality) | Excellent | 310 KB | Best compatibility |
| WebP (85% quality)BEST | Excellent | 205 KB | −34% vs JPG · Best for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
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Frequently Asked Questions
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