Free online PDF utilities

Advanced PDF Tools

Use these focused utilities when a PDF is damaged, two versions need comparison, or page dimensions require precise adjustment.

Repair PDF

Fix corrupted or damaged PDF files and recover as much content as possible. Useful when a PDF won't open or displays errors.

Open Repair PDF

Compare PDF

Compare two PDF documents side by side and highlight differences. Spot changes between contract versions, reports, or revisions quickly.

Open Compare PDF

Resize PDF

Change PDF page dimensions to A4, Letter, or custom sizes. Standardize mixed documents for printing or professional submission.

Open Resize PDF

OCR PDF

Make scanned PDFs searchable with optical character recognition (OCR). Convert image-based pages into selectable, searchable text.

Open OCR PDF

Choose the right PDF tool

Start with the result you need, then open the focused tool above. Each tool page explains what it changes, where processing happens, and which related utility can help with the next step. Your original file is not modified.