Image to WebP Converter
Convert any image to WebP format for smaller file sizes and faster website loading. No uploads, no account required.
Drop files here or click to browse
Accepted: image/*
What This Tool Does
Converts JPG, PNG, and GIF images to WebP format in your browser, reducing file size by 25–50% at equivalent perceptual quality — with no server upload.
Who This Is For
- Web developers improving page load speed and Core Web Vitals by serving WebP instead of JPG or PNG
- Site owners reducing image bandwidth costs without sacrificing visible quality
- Frontend engineers building image optimization pipelines who need to test WebP output
- Performance-conscious bloggers converting their image library to WebP
Example: Input: A 500 KB JPG product photo → Output: A WebP file at roughly 200–300 KB with no perceptible quality difference — a 40–60% size reduction
✓ Conversion Complete!
Your files are ready to download.
💡 WebP files are ideal for web use, but some contexts — older email clients, certain social platforms — require JPG or PNG. Use WebP to JPG to convert back when needed. For resizing the WebP image to specific dimensions, the Image Resizer handles any target size.
Related Guides & Tutorials
How Much Does WebP Reduce File Size?
The size reduction from converting to WebP depends on the source format and image content. Typical results:
| Source Format | Typical WebP Reduction | Notes |
|---|---|---|
| JPG (quality 85) | 25–35% smaller | Most significant for photos with soft gradients |
| JPG (quality 100) | 30–40% smaller | Heavily compressed JPG benefits less |
| PNG (photographic) | 25–34% smaller | WebP handles photograph-type content well |
| PNG (flat graphics) | 15–25% smaller | Lossless WebP vs PNG: moderate improvement |
| PNG with transparency | 20–30% smaller | Lossless WebP alpha channel is more efficient |
For a typical website image gallery, converting to WebP saves 25–35% of bandwidth per page load. On image-heavy sites, this translates directly to faster load times and better Core Web Vitals scores.
WebP and Core Web Vitals
- Largest Contentful Paint (LCP) — the largest image on the page is a primary factor in LCP score. Smaller WebP files load faster, directly improving LCP.
- Total Blocking Time — reduced image payload means the browser finishes network requests sooner, freeing the main thread earlier.
- Google PageSpeed Insights — "Serve images in next-gen formats". Once you have WebP files, pair them with image compression for maximum performance. Once you have WebP files, pair them with image compression for maximum performance is one of the most common recommendations. Using WebP resolves this flag entirely.
- Browser support — WebP is supported in Chrome, Firefox, Safari (since 14), and Edge. It covers 95%+ of global browser usage as of 2026.
- Fallback strategy — use the HTML
<picture>element with WebP as the primary source and JPG/PNG as a fallback for any remaining unsupported browsers.
WebP in Your Image Optimization Workflow
Converting to WebP is most effective as the final step after editing and resizing:
- Resize to target dimensions before converting — smaller dimensions mean smaller WebP files
- Pre-compress JPG or PNG before converting to WebP for maximum size reduction
- Convert WebP back to JPG or PNG if you need a universally compatible fallback
- Convert JPG to PNG first if you need lossless WebP output (lossless WebP is based on PNG)
- Convert HEIC to JPG before converting iPhone photos to WebP
Frequently Asked Questions
How It Works
When to Use This Tool
- →Converting images for a website to improve Google PageSpeed and Core Web Vitals scores
- →Reducing image file size for faster page loads without visible quality loss
- →Preparing images for modern web platforms that serve WebP by default
- →Batch converting a photo library to WebP for storage efficiency
🔒 Privacy & Security
WebP conversion uses the browser's Canvas API with WebP encoding — supported natively in Chrome, Firefox, Edge, and Safari. Your images are converted in memory and never uploaded. For product photos, personal images, or any image with privacy considerations, local conversion is always preferable.
You Might Also Need
Related Tools
- Need a JPG instead of WebP? Convert PNG to JPG for the most universally compatible format. → convert PNG to JPG first
- Prefer animation over WebP? Use the GIF Maker to turn a series of images into an animated GIF. → create an animated GIF from your images
Image Format Guides
Not sure which format to use? These in-depth comparisons explain the tradeoffs: