OPTIMIZE TOOL

Crop PDF

Remove distracting outer borders, printer scanner marks, or excessive whitespace from every page of your PDF with customizable percentage margin cropping.

HOW TO USE

Step-by-step guide

Step 1: Select your PDF document.
Step 2: Enter the percentage you want to crop from each edge (Left, Right, Top, Bottom).
Step 3: Click "Crop PDF" to trim the margins and download the result.

FAQ

Frequently asked questions

How are crop percentages measured?

Percentages are measured inward from each respective page boundary (e.g. 5% crops 5% off the edge).

What is the maximum allowed crop percentage?

To ensure document content remains visible, the sum of opposite margins (left+right or top+bottom) cannot exceed 95%.

Is cropping destructive to the original file?

No. The original file remains unchanged on your computer; a new trimmed copy is downloaded.

PRIVACY & SECURITY

Client-side in-memory processing

PDF Toolbox is engineered with a strict browser-first architecture. All file operations execute entirely in your local browser sandbox via modern WebAssembly and JavaScript engines. No file bytes or sensitive document data are ever uploaded, buffered, or stored on external servers or cloud infrastructure. Memory buffers are cleared immediately when you finish or close your tab.

🔒 Zero server uploads: Processing stays on your device ⚡ Instant execution: No network upload/download queues 🛡️ Private & Confidential: Safe for legal, medical & financial files