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What Is the WebP Format?
WebP is a modern image format developed by Google that provides superior compression for images on the web. It supports both lossy and lossless compression, transparency (alpha channel), and even animation — all in a single format.
Compared to JPEG and PNG, WebP typically achieves 25–35 % smaller file sizes at equivalent visual quality. All major browsers now support WebP, making it the go-to format for web performance optimization.
How Our Converter Works
CheckTown's Image to WebP converter runs entirely in your browser — no files are uploaded to any server:
- Upload any image (JPEG, PNG, WebP, GIF, or BMP up to 50 MB) via drag-and-drop, file picker, or clipboard paste
- Choose lossy or lossless mode and adjust the quality slider to balance file size and visual fidelity
- Click Convert and see the result with a side-by-side file-size comparison — then download the WebP output
Try it free — no signup required
Convert to WebP →When to Convert to WebP
WebP conversion is especially valuable in these scenarios:
- Website optimization — serve WebP images to reduce page weight and improve Core Web Vitals scores significantly
- Bandwidth savings — smaller files mean faster downloads on mobile networks and lower CDN costs for high-traffic sites
- Replacing PNG with transparency — WebP supports alpha channels like PNG but at much smaller file sizes
Frequently Asked Questions
What's the difference between lossy and lossless WebP?
Lossy WebP discards some data for smaller files (similar to JPEG). Lossless WebP preserves every pixel (similar to PNG) but still achieves better compression. Choose lossy for photographs and lossless for graphics or screenshots.
Do all browsers support WebP?
Yes — Chrome, Firefox, Safari, Edge, and Opera all support WebP. The only notable exception is very old browser versions (Safari added support in version 14, released in 2020).
Is my image uploaded to a server?
No. The conversion uses the browser's Canvas API. Your image never leaves your device.