WebP is a modern image format developed by Google that provides superior lossless and lossy compression for images on the web. Compared to PNG, WebP lossless images are 26% smaller on average. Compared to JPEG, WebP lossy images are 25–34% smaller at equivalent quality. Converting to WebP can dramatically speed up your website, reduce bandwidth usage, and improve SEO rankings through better Core Web Vitals scores.

Yes, this tool is 100% free with no hidden costs or limitations. All image processing happens locally in your browser using the HTML5 Canvas API — your images are never uploaded to any server. This means your files remain completely private and secure. You can convert as many images as you want without any file size restrictions (though very large images may be limited by your device's memory).

No. This browser-based tool converts GIF files by rendering only the first frame to WebP. The resulting WebP will be a static image, not animated. If you need animated WebP conversion, consider using command-line tools like ffmpeg or dedicated desktop software like cwebp (part of Google's libwebp). We display a warning when GIF files are added to remind you of this limitation.

It depends on your use case:
• Lossless (100%) — Best for images requiring pixel-perfect fidelity like logos, icons, screenshots. Files are still smaller than PNG.
• High (92%) — Great for photography and detailed images where quality matters. Minimal visible difference from original.
• Medium (75%) — A balanced option for general web use. Good quality with significant file size reduction.
• Low (50%) — Aggressive compression for thumbnails or where file size is critical. Visible quality loss may occur.
We recommend starting with High (92%) and adjusting based on your needs.

Yes! WebP fully supports alpha channel transparency in both lossless and lossy modes. When you convert a PNG with transparent backgrounds, the resulting WebP will preserve that transparency. This makes WebP an excellent replacement for PNG files on the web, often reducing file size by 30–50% while maintaining the same visual quality and transparency.

WebP is supported by all modern browsers including Google Chrome (v32+), Mozilla Firefox (v65+), Microsoft Edge (v18+), Apple Safari (v14+ on macOS, v14+ on iOS), Opera (v19+), and Samsung Internet. As of 2025, global WebP browser support exceeds 97%. For the small percentage of legacy browsers, you can implement fallback solutions using the <picture> element.

Absolutely! This tool is designed for bulk conversion. You can select or drag up to 50 images at once. Each image is processed individually, and you can download them all as a single ZIP file. This makes it perfect for web developers, designers, and content creators who need to optimize entire image libraries quickly.

In most cases, yes — especially for PNG and high-quality JPEG files. However, if you convert an already heavily compressed JPEG at a very high WebP quality setting, the output may occasionally be slightly larger. Our tool shows you the exact size change for each file with color-coded indicators (green = smaller, red = larger), so you can make informed decisions. If a WebP is larger, try reducing the quality setting or keeping the original format.

This tool supports PNG, JPEG/JPG, GIF, BMP, and existing WebP files as input. Note that for GIF files, only the first frame is converted (static output). For vector formats like SVG, conversion is not supported due to the raster-based nature of the Canvas API. Supported formats cover the vast majority of web and digital photography use cases.