Add Page Numbers to PDF
Number PDF pages with customizable positions, formatting styles, margins, and starting index.
Drop your PDF here
Select PDF document to add page numbers
How to Use Add Page Numbers to PDF
Upload PDF
Select or drag-and-drop the PDF document you want to number.
Customize Layout
Choose position (bottom-center, bottom-right, etc.), format style, font size, and whether to skip cover page.
Apply & Download
Click "Add Page Numbers" to process locally and download the newly numbered PDF.
Key Benefits
- 100% Client-Side: Sensitive documents, contracts, and thesis papers never leave your device
- Flexible numbering styles: Numbers, Page X of Y, Vietnamese "Trang X / Y", and dashed formats
- Accurate positioning with 6-point grid and custom margin controls
- Optional cover page exclusion to preserve clean presentation title pages
Browser & Hardware Notes
- Encrypted or password-protected PDFs must be unlocked before numbering.
Frequently Asked Questions about Add Page Numbers to PDF
How Add Page Numbers to PDF Operates Privately on Your Device
Unlike traditional cloud services that transmit your confidential files across the open internet to remote servers, SafeWebUtil operates on a strict zero-upload client-side architecture. Every transformation performed by Add Page Numbers to PDF executes exclusively within your browser's secure memory sandbox.
Lossless CosObject Tree Parsing
Parses and modifies low-level Cross-Reference (XRef) tables and CosObject streams via WebAssembly. Vector paths, Bézier curves, and TrueType fonts remain 100% crisp without destructive rasterization.
Isolated Browser Heap Memory
File bytes are read into transient ArrayBuffer allocations in local RAM. Background Web Workers manage garbage collection efficiently, supporting documents over 100MB with zero server exposure.
Strict Zero-Telemetry Privacy
Meets stringent compliance mandates (GDPR Article 32, HIPAA technical safeguards, corporate NDAs). Contracts, legal filings, and financial records never leave your machine.
Engineering Insights & Performance Best Practices for Add Page Numbers to PDF
Our PDF engine manipulates CosObject streams without canvas rasterization. Vector fonts, Bézier curves, and metadata remain intact. For large files over 100MB, close background browser tabs to maximize available RAM.
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