JPG to WebP Converter — Free & Private

Convert JPG images to WebP for 25–35% smaller files at the same visual quality. Runs entirely in your browser using the libwebp encoder — no uploads, no server processing.

Drag & drop JPG files here or

Supports .jpg and .jpeg files

80%

Converting...

Converted Images

Convert JPG to WebP for Dramatically Smaller File Sizes

WebP is Google’s modern image format that compresses photographs 25–35% better than JPG at the same visual quality. For websites, that means faster page loads, lower bandwidth costs, better search rankings, and improved Core Web Vitals scores. This free converter takes your JPG files and outputs WebP directly in your browser — no uploads, no waiting, no size limits.

Why Switch from JPG to WebP?

  • Smaller files — typical photos drop 25–35% in size with no visible quality difference.
  • Better Core Web Vitals — smaller images improve Largest Contentful Paint (LCP), which Google uses as a ranking signal.
  • Lower bandwidth costs — if you serve a lot of images, the savings add up fast.
  • 97%+ browser support — Chrome, Firefox, Safari 14+, Edge, and Opera all support WebP natively.

How the Conversion Works

Your JPG is decoded by the browser, then re-encoded as WebP using libwebp — Google’s reference encoder compiled to WebAssembly. The Quality slider controls the size/quality trade-off: 80% is an excellent default that produces visually indistinguishable output at dramatically smaller file sizes.

Tips for Best Results

  • Use 80–85% quality for general web use — best balance of size and quality.
  • Use 70–80% for image-heavy pages where every kilobyte counts.
  • Use 90%+ for hero images, product photos, or portfolio work where quality is paramount.
  • Keep the JPG originals as fallback if you need to support very old browsers (IE, Safari < 14).

Browser-Based Privacy

The tool runs entirely on your device using WebAssembly. Your JPG files are never uploaded anywhere. Works offline after the first page load. No account, no watermarks, no size limits, no usage caps.

FAQ

Frequently Asked Questions

WebP produces 25–35% smaller files than JPG at the same visual quality. For websites, this means faster page loads, lower bandwidth costs, and better Core Web Vitals scores. Google, Facebook, and most major sites now serve WebP as the primary image format. All modern browsers (Chrome, Firefox, Safari 14+, Edge) support WebP natively.

At the default 80% quality, the output is visually indistinguishable from the JPG source while being significantly smaller. WebP uses a more efficient compression algorithm than JPG, so at matched quality settings it achieves better visual fidelity per byte. The conversion does add one lossy encoding pass, so avoid re-encoding WebP output multiple times.

All modern browsers support WebP: Chrome (since 2010), Firefox (since 2019), Safari 14+ (since 2020), Edge, and Opera. Browser market share for WebP-compatible browsers is over 97% as of 2025. Internet Explorer and very old browsers do not support WebP — for those, keep your JPG originals as fallback.

No. All conversion happens entirely on your device using WebAssembly and the libwebp encoder. Your JPG files are never transmitted, uploaded, stored, or accessed by any server. The tool works offline after the initial page load.

The default 80% is excellent for most web use — it produces files that are both visually indistinguishable from the source and 25–35% smaller than JPG. For photography portfolios or print-grade output, try 85–92%. For maximum size reduction on thumbnails and previews, 60–75% still looks good. Below 50%, compression artifacts become visible.