How does the PDF Resizer reduce size?

It renders pages to images with chosen DPI and JPEG quality, then rebuilds a compact PDF.

No, all processing happens in your browser.

What settings should I use?

Try quality 0.7–0.8 and DPI ~110. Lower for more compression, higher for better text clarity.

PDF File Resizer

Resize pages and compress images to reduce PDF size in your browser. No upload to server.

Choose PDF

Target Page Size

Image Quality 0.72

Render DPI

Limit Pages (optional)

No file loaded.

About this PDF Resizer

This tool renders each PDF page to a canvas and rebuilds a compact PDF using JPEG images. Choose target page size (A4/Letter/Original), adjust image quality, and control rendering DPI for balance between clarity and file size.

How does compression work?

Pages are rasterized and embedded as compressed JPEGs, typically reducing file size dramatically for scanned PDFs with large images.

Is my PDF uploaded?

No. Everything runs in your browser using WebAssembly/JS libraries.

Tips for best results

Start with quality ~0.7 and DPI ~110
Use A4 or Letter to standardize page sizes
For vector-heavy PDFs, very low DPI may blur small text