Convert JPG to WebP — The Modern Web Image Format

WebP is the image format that Google developed specifically for the web. At the same visual quality, WebP files are typically 25–35% smaller than JPG — a meaningful difference for websites, apps, and anywhere bandwidth matters.

Cluster Tools converts JPG to WebP entirely in your browser using the libwebp encoder compiled to WebAssembly. Your photos never leave your device.

WebP vs. JPG: What Changes?

WebP uses a more sophisticated compression algorithm (based on VP8 video encoding technology) that better preserves fine detail and smooth gradients compared to JPG's DCT-based approach. The practical result:

• Smaller files at the same quality level (Google's benchmarks show ~30% reduction on average).
• Better quality at the same file size as an equivalent JPG.
• Support for transparency (alpha channel) — unlike JPG, WebP can have transparent backgrounds. This makes WebP a viable replacement for both JPG and PNG in many cases.
• Animation support — WebP also supports animated images (as a JPG replacement for GIFs).

Who Should Convert to WebP?

Web developers and designers — Lighthouse, PageSpeed Insights, and Google Search Console all recommend WebP as part of "serve images in next-gen formats" performance audits. Switching your site's images to WebP can meaningfully improve Core Web Vitals LCP scores.

App developers — mobile apps that load images from APIs benefit from WebP's smaller payload sizes, reducing data usage and improving load times.

Content creators — uploading WebP to platforms that support it (Google Docs, modern CMSes, Notion) keeps storage usage low.

Browser and Platform Support for WebP

As of 2024, WebP is supported by all major browsers: Chrome, Firefox, Safari (since version 14), Edge, and Opera. Older IE11 and Safari <14 don't support WebP — but these browsers represent less than 1% of global web traffic. For most use cases, WebP is safe to deploy without JPG fallbacks.

Step-by-Step: How to Convert

1. Drop your JPG file(s) into the tool above.
2. Set quality — 80% WebP quality is roughly equivalent to 90% JPG quality due to the more efficient algorithm.
3. The conversion runs in your browser using WebAssembly.
4. Download your WebP file(s).

Frequently Asked Questions

Is WebP quality equivalent to JPG at the same quality setting? Not directly comparable by number. A WebP at 75% quality often looks better than a JPG at 80% quality because the algorithms are different. When converting, start around 75–80% WebP quality and compare visually before finalizing.

Can I convert multiple files at once? Yes — batch mode is supported. Drop multiple JPGs and download a ZIP of WebP files.

Does the converter preserve EXIF metadata (GPS, camera settings)? EXIF data can optionally be stripped or preserved. Stripping it further reduces file size and removes any embedded GPS coordinates, which is often desirable for privacy.

What if a platform doesn't support WebP? You can always keep both a JPG and a WebP version. In HTML, the <picture> element lets browsers choose the best format they support: serve WebP to modern browsers, JPG to older ones.

Related Tools

• PNG to WebP — convert PNG to WebP, preserving transparency.
• WebP to JPG — convert WebP back to JPG for platforms that don't support WebP yet.
• Image Compressor — compress JPG, PNG, or WebP with precise quality control.
• Image Resizer — resize before converting to further reduce file size.