Batch PDF to WebP Converter

Pure Local Processing No Server Upload 5 Output Formats PDF.js Engine

Output Format

PNG Lossless, best for documents JPEG Small file, best for sharing WebP Modern web format BMP Uncompressed bitmap TIFF Professional print/archive

Resolution (DPI) 72=screen, 150=medium, 300=print

Pages

All Pages Custom Range

100% Free & Private batch PDF to WebP converter. No file upload required — convert PDF pages to modern WebP images (25-35% smaller than JPG) locally in your browser. Features custom DPI (72-600), page range selection, quality controls, and fast ZIP download.

Tips & Tricks

Modern Web Format

WebP is a modern image format developed by Google that provides superior compression — 25-35% smaller than JPEG at equivalent quality. It supports transparency and animations.

When to Use WebP

Choose WebP for websites and web applications where fast loading times are critical. It is ideal for reducing bandwidth and improving page speed scores.

WebP Best Practices

Use WebP as the primary format for web delivery. Most modern browsers support it. Consider providing a JPEG or PNG fallback for older browsers.

Common Use Cases

Website Optimization

Convert PDF pages to WebP for faster website loading

Web App Assets

Use WebP for in-app image assets to reduce bandwidth

Performance Optimization

Improve Core Web Vitals with smaller image sizes

Progressive Web Apps

Optimize PWA assets with WebP compression

Content Delivery

Reduce CDN costs with smaller WebP file sizes

Mobile Optimization

Deliver optimized images to mobile users

FAQ

Are my PDF files uploaded to a server?

No. All processing happens entirely in your browser using the PDF.js rendering engine. Your PDF file never leaves your device, making this tool safe for sensitive or confidential documents.

What makes WebP different from other formats?

WebP is a modern format developed by Google. It offers 25-35% smaller file sizes than JPEG at equivalent quality. WebP supports both lossy and lossless compression, as well as transparency and animations. Most modern browsers support it.

How do I select specific pages to convert?

You can convert All Pages, or use Custom Range by entering page numbers. Use commas for individual pages (e.g., 1,3,5) and hyphens for ranges (e.g., 1-5).

What DPI should I use?

72 DPI is standard for screen viewing and web use. 150 DPI offers a good balance of quality and file size. 300 DPI is recommended for high-quality printing. Higher DPI produces significantly larger files.

How many pages can I convert at once?

There is no hard limit on pages, but very large PDFs (200+ pages) at high DPI may consume significant memory. For best results, we recommend converting large PDFs in batches or at a lower DPI.

How much smaller are WebP files compared to JPEG?

WebP files are typically 25-35% smaller than equivalent JPEG images at the same quality level, and 50-60% smaller than PNG for lossless images. This makes WebP ideal for bandwidth-sensitive applications and fast-loading websites.

Can I convert password-protected PDFs?

Currently, password-protected PDFs are not supported. Please remove the password protection before uploading.