Batch Image to WebP Converter

Pure Local Processing No Server Upload 7 Output Formats Canvas API

Output Format

PNG Lossless, supports transparency JPEG Small file, best for photos WebP Modern web format AVIF Next-gen compression BMP Uncompressed bitmap TIFF Professional print/archive ICO Icon format for Windows

100% Free & Private batch image to WebP converter. No file upload required — convert HEIC, PNG, JPG, AVIF, BMP, TIFF, ICO to modern WebP locally in your browser. Reduce file size by 25-35% vs JPG. Supports lossy/lossless modes, quality control, and batch ZIP download.

Tips & Tricks

Modern Efficiency

WebP combines the best of JPEG and PNG: small file sizes like JPEG with transparency support like PNG. It typically reduces file size by 25-35% compared to JPEG at equivalent quality.

When to Use WebP

Choose WebP for modern websites and applications where both quality and performance matter. It is the preferred format for Google-optimized pages.

WebP Best Practices

Use WebP as a primary format on modern websites with a JPEG or PNG fallback. WebP supports both lossy and lossless compression — use lossy for photos and lossless for graphics.

Common Use Cases

Website Optimization

Improve Core Web Vitals with smaller image files

Page Speed

Reduce page load times dramatically with efficient compression

Mobile Web

Deliver high-quality images on bandwidth-constrained mobile networks

E-Commerce

Display product images faster for better conversion rates

Image Galleries

Build fast-loading photo galleries and portfolios

Ad Creatives

Serve banner ads and creatives that load instantly

Frequently Asked Questions

Are my images uploaded to a server?

No. All processing runs entirely in your browser via the Canvas API. Your images never leave your device.

What about browser compatibility for WebP?

WebP is supported by Chrome, Firefox, Edge, Safari 14+, and Opera, covering over 96% of web users globally. For universal compatibility, serve fallback JPEG/PNG via the element.

Is there a file size limit?

Yes, each file must be under 50 MB. You can upload up to 20 files at once. If you need to convert more, process them in batches.

Should I use lossy or lossless WebP?

Use lossy WebP for photographs and complex images where slight quality loss is acceptable — files are 25-35% smaller than JPEG at similar quality. Use lossless WebP for screenshots, diagrams, and images with transparency where every pixel must be preserved perfectly.

Can I convert multiple images at once?

Yes. Upload up to 20 images at once. After conversion, you can download each file individually or package them all as a ZIP archive for convenience.