How to convert images to WebP
WebP is a modern image format developed by Google that typically produces smaller files than JPEG and PNG at similar visual quality. Websites use WebP to improve load times and Core Web Vitals. Converting existing JPG or PNG assets to WebP is a common optimization step for blogs, e-commerce stores, and landing pages.
Our WebP converter runs in your browser using the Canvas API. Upload a JPG or PNG file, adjust the quality slider, and click Convert to WebP. The tool shows the new file size so you can balance quality and compression before downloading. Your original file never leaves your device.
For best results, start at 85% quality for photographs and adjust down if you need smaller files. PNG screenshots with flat colors often compress dramatically as WebP. Combine with our Resize Image tool if you also need smaller dimensions.
WebP is supported by all major browsers. If you need compatibility with very old software, keep a JPEG fallback. For modern web use, WebP is an excellent default choice.
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Why convert to WebP with this tool?
Server-based WebP converters require uploading every image before conversion — slow on large files and problematic for private content. Browser-based conversion is instant and keeps your assets on your machine.
The quality slider lets you control output size precisely. Automatic converters often over-compress or under-compress. Here you see the result size before downloading and can tweak until it is right.
WebP output can cut page weight significantly, which helps SEO and user experience. This tool makes that optimization accessible without command-line tools or paid software.
Frequently asked questions
- How much smaller is WebP compared to JPG?
- Results vary, but WebP is often 25–35% smaller than JPEG at similar visual quality. Your mileage depends on image content and quality settings.
- Does WebP support transparency?
- Yes. WebP supports transparency like PNG. When converting PNG files with transparent areas, WebP can preserve alpha channels.
- Which browsers support WebP?
- All modern versions of Chrome, Firefox, Safari, and Edge support WebP. It is safe for virtually all web use in 2026.
- Is conversion done on your servers?
- No. Everything runs locally in your browser.