Convert images to WebP
Reduce file size by 30-50%. Improve page speed & Lighthouse scores. Need JPG/PNG too? Use the main compressor.
Drop images here
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Files never leave your browser
Output format
WebP only for maximum performance.
Convert images to WebP
Convert images to WebP online
Reduce image file size by 30-50% compared to JPG. Improve page speed, Core Web Vitals, and Google Lighthouse scores instantly. Need JPG or PNG? Use the full NanoJPG compressor.
Recommended by Google for modern websites. Supported by all major browsers.
Web performance optimization
Why WebP improves page speed and SEO
WebP images reduce transfer size and decode faster, directly improving Core Web Vitals, Google Lighthouse scores, and search rankings.
Faster page load times
WebP compresses images 25-35% better than JPG, dramatically reducing page weight and load times.
Better Core Web Vitals
Smaller images improve LCP (Largest Contentful Paint) — a key ranking factor for Google.
Higher Lighthouse scores
Google Lighthouse specifically recommends WebP. Using it can boost your Performance score by 10-20 points.
SEO & performance benefits
How WebP helps your website rank higher
Google uses page speed as a ranking factor. WebP images directly improve the metrics Google measures, helping your site rank better in search results.
Format comparison
WebP vs JPG vs PNG — which format to use?
WebP offers the best balance of quality and file size for most web images. Here's how it compares. Want multi-format exports? Go to the main compressor.
How it works
Three steps to faster images
Upload locally, tune quality, and download ready-to-ship WebP files.
Upload or drop
Add images or ZIP archives with folders — everything stays on your device.
Adjust quality
Balance sharpness and size for performance wins without losing detail.
Download WebP
Save optimized files instantly or grab a ZIP with folder structure preserved.
FAQ
WebP optimization questions
Everything you need to optimize images for web performance.
What is WebP and why should I use it?
WebP is a modern image format developed by Google. It offers 25-35% smaller file sizes than JPG with the same visual quality, making websites load faster and improving SEO rankings.
How much smaller are WebP images compared to JPG?
WebP images are typically 25-35% smaller than equivalent JPG files. For example, a 1MB JPG photo often compresses to 650-750KB as WebP with identical perceived quality.
Does converting to WebP improve Google Lighthouse scores?
Yes. WebP reduces image transfer size, which directly improves LCP (Largest Contentful Paint) and overall Performance scores in Lighthouse audits. Many sites see 10-20 point improvements.
How does WebP help with Core Web Vitals?
WebP improves LCP (Largest Contentful Paint) by loading images faster, and reduces CLS (Cumulative Layout Shift) with faster decode times. Both are key Google ranking factors.
Will using WebP improve my SEO rankings?
Yes. Google uses page speed as a ranking factor, and specifically recommends WebP in PageSpeed Insights. Faster-loading pages with optimized images rank better in search results.
Is WebP supported by all browsers?
Yes. WebP has 97%+ global browser support including Chrome, Firefox, Safari, Edge, and Opera. Safari added support in 2020, making WebP safe for production use.
Do my images get uploaded when converting to WebP?
Never. All conversion happens locally in your browser using JavaScript. Your images never leave your device, making this tool safe for confidential or client work.
Can I convert multiple images to WebP at once?
Yes. Drop multiple files or even a ZIP archive for instant batch conversion. Download all WebP files as a single ZIP with folder structure preserved.
Does WebP support transparency like PNG?
Yes. WebP supports alpha channel transparency just like PNG, but with much smaller file sizes — often 50-70% smaller than equivalent PNGs with transparency.
Is this WebP converter free to use?
Completely free with no limits. Convert as many images as you need, at any file size. No account, no registration, no watermarks.
Optimize images, improve page speed
Convert to WebP, reduce transfer size, and deliver faster experiences for every page.