Quick guide to Add Page Numbers

Insert page numbers into your PDF.

Steps

Provide the input requested by Add Page Numbers.
Run the tool and review the result.
Copy or download the result when the output is correct.

Before you use the result

Check important results against your source information. Browser support, rounding, file complexity and device memory can affect some operations.

What is Add Page Numbers?

Insert page numbers into your PDF.

Add Page Numbers is part of Smart2Office's suite of free browser-based productivity tools. It is designed to handle an everyday task that would otherwise require installing dedicated desktop software or paying for a subscription service. Open the page, use the tool, close it — nothing to set up, nothing to maintain, and nothing to pay.

The tool runs on any modern device — Windows PC, Mac, iPhone, Android phone or tablet — directly in your web browser. There is no version to update, no operating system compatibility issue, and no licence to renew.

✅ Key Features

Runs entirely in your browser — no PDF is ever sent to a server
No watermarks added to output files
Supports all standard PDF versions
Free — no sign-up, no usage limits

💼 When to Use This Tool

Combining reports from multiple team members into one document
Splitting a large scanned archive into individual pages
Preparing PDFs for client delivery or regulatory submission
Reducing file size before uploading to a portal or emailing

Tips for Best Results

For best merge results, ensure all source PDFs share the same page orientation.
If a large PDF processes slowly, split it first then work with smaller sections.
Add page numbers before distributing documents for review so everyone can reference the same pages.
Use PDF Watermark on confidential drafts before sharing externally.

Technical Details

Input: PDF (all versions). Processing: pdf-lib 1.17 (client-side JS). For PDF-to-image: PDF.js 3.11. Output: PDF, JPG, PNG or TXT depending on the tool.

Frequently Asked Questions

Are my PDFs uploaded to a server?

No. All PDF operations use pdf-lib, a JavaScript library running entirely in your browser. Your PDF files never leave your device and are never transmitted anywhere.

Is there a file size limit?

There is no imposed limit. Very large files (over 200 MB) may be slower depending on your device memory. Typical documents — reports, invoices, presentations — are handled instantly.

Does it work on mobile phones and tablets?

Yes. All PDF tools work on iOS and Android. Chrome and Safari provide the best experience on mobile.

Does the tool work offline?

Yes. Once the page has loaded, tools continue working without internet because all processing happens in your browser.

Will my PDF lose quality after processing?

For merge, split, rotate, extract and rearrange operations there is no quality loss — the PDF content is not re-encoded.

What PDF versions are supported?

All standard PDF versions (1.4 through 2.0) are supported. Most everyday documents — scanned files, reports, email attachments — work perfectly.

🔒 Your Privacy & Security — Your PDF files are processed by pdf-lib, a JavaScript PDF library that runs entirely in your browser. No file data is transmitted to any server at any point. What you upload stays on your device. Smart2Office does not track what you process, does not store output files, and does not share your data with third parties. What you create belongs entirely to you.

🔢 Add Page Numbers