# PDF Usage Tracking ID

Embed near-invisible tracking ID/serial into page corners for distribution tracing

> Canonical page: https://elysiatools.com/en/tools/pdf-usage-tracking-id

- **Category:** PDF Tools

- **Keywords:** pdf, tracking, id, serial, distribution, forensics

## Overview

Embed a hidden trace identifier into PDF copies.

**Features:**
- Auto or custom tracking ID
- Optional per-page serial suffix
- Near-invisible corner text overlay
- Metadata stamp with tracking fields

Use `pdf-usage-tracking-id-reader` to extract IDs and per-page serials later.

## Inputs

- **Source PDF File** (file): Upload one PDF
- **Tracking ID Mode** (select)
- **Custom ID** (text): Required when mode = custom
- **Append Page Serial** (checkbox)
- **Embed Corner** (select)
- **Opacity** (number)
- **Font Size** (number)
- **Rotation (deg)** (number)

## When to use

- When you need to track the source of leaked or unauthorized PDF documents.
- When distributing sensitive reports to specific individuals or departments.
- When you want to maintain a record of document versions using unique serials per page.

## How it works

- Upload your source PDF file and select your preferred ID generation mode (UUID, Timestamp Hash, or Custom).
- Configure the placement, opacity, font size, and rotation of the tracking ID to ensure it remains discreet yet readable.
- Enable the page serial option to append unique identifiers to every page for granular tracking.
- Download the processed PDF, which now contains the embedded tracking data in the specified corner.

## Use cases

- Watermarking confidential internal memos to identify the source of potential leaks.
- Distributing unique copies of whitepapers or research to track which version was shared publicly.
- Managing document distribution logs by assigning unique serials to every page of a multi-page contract.

## Frequently asked questions

### How visible is the tracking ID?

The ID is designed to be near-invisible. You can adjust the opacity between 0.002 and 0.08 to make it blend into the document background.

### Can I use my own tracking ID?

Yes, select the 'Custom' ID mode and enter your specific identifier in the Custom ID field.

### How do I retrieve the ID from a document later?

You can use the companion 'pdf-usage-tracking-id-reader' tool to extract the embedded IDs and page serials from the document.

### Does this tool modify the original file content?

It adds a small, low-opacity text overlay to the specified corner and updates the document metadata with the tracking information.

### Can I rotate the tracking ID?

Yes, you can rotate the ID text between -45 and 45 degrees to match the document layout or add an extra layer of obfuscation.

## Related tools

- [PDF Usage Tracking ID Reader](https://elysiatools.com/en/tools/pdf-usage-tracking-id-reader): Extract embedded tracking ID and page serial values from tracked PDF files
- [PDF Booklet Imposer](https://elysiatools.com/en/tools/pdf-booklet-imposer): Impose PDF pages into booklet printing order for duplex binding
- [PDF Grayscale Converter](https://elysiatools.com/en/tools/pdf-grayscale-converter): Convert color PDF documents into grayscale or high-contrast black-and-white output for printing and file-size reduction
- [PDF Rasterize Pages](https://elysiatools.com/en/tools/pdf-rasterize-pages): Render PDF pages into high-fidelity image sequences (PNG/JPG/WebP) with configurable DPI and page range
- [PDF to Structured Markdown Converter](https://elysiatools.com/en/tools/pdf-to-structured-markdown-converter): Convert PDFs into structured Markdown using OpenDataLoader with options for HTML-rich output, images, page separators, and tagged-PDF structure
- [PDF Form Flatten](https://elysiatools.com/en/tools/pdf-form-flatten): Flatten a PDF form: bake field values into static content so the result is non-editable
- [PDF Page Size Adjust](https://elysiatools.com/en/tools/pdf-page-size-adjust): Adjust PDF pages to standard paper sizes (A4, Letter, etc.)
- [PDF RAG Chunker & Citation Pack](https://elysiatools.com/en/tools/pdf-rag-chunker-citation-pack): Convert a PDF into heading-aware RAG chunks with page numbers, bounding boxes, and citation metadata

## Samples

- [PDF Samples](https://elysiatools.com/en/samples/pdf-samples): Generated PDF samples from tools dated 2026-02-01 to 2026-02-10
- [Markdown Slide Deck Samples](https://elysiatools.com/en/samples/md-slide-deck-to-pdf): Remark/Marp style Markdown slide decks for testing PDF export layouts
- [Tracking Number Samples](https://elysiatools.com/en/samples/tracking-number): Collection of tracking numbers from major global carriers for validation testing
- [Time Zone Workflow Scheduler ICS Samples](https://elysiatools.com/en/samples/time-zone-workflow-scheduler-ics-samples): ICS files generated in the same structure returned by the Time Zone Workflow Scheduler, with multiple VEVENT meeting candidates exported from overlap windows

## Related content

- [PDF Signing, Stamping, and Distribution Tracing](https://elysiatools.com/en/hubs/pdf-signing-stamping-and-distribution-tracing): Send PDFs you can prove are yours — redact sensitive content permanently before sealing, add a visible signature block and a PAdES certificate signature, stamp the document status, embed invisible per-recipient tracking IDs, and audit incoming signatures down the certificate chain.