# PDF Merge Documents

Merge multiple PDF files with optional table of contents and separator pages

> Canonical page: https://elysiatools.com/en/tools/pdf-merge-documents

- **Category:** PDF Tools

- **Keywords:** pdf, merge, toc, separator, combine

## Overview

Combine multiple PDFs into one output.

**Features:**
- Preserve original page content and order
- Optional table of contents page (file names + starting pages)
- Optional separator page before each merged source

## Inputs

- **Source PDF Files** (file): Upload multiple PDF files
- **Include TOC** (checkbox)
- **Insert Separator Pages** (checkbox)

## When to use

- Consolidating multiple project reports or invoices into one master file.
- Organizing disparate PDF documents into a structured portfolio with a clear index.
- Preparing long-form documents that require distinct visual breaks between sections.

## How it works

- Upload your PDF files in the desired order of appearance.
- Toggle the 'Include TOC' option to generate a table of contents based on file names.
- Enable 'Insert Separator Pages' if you need clear visual boundaries between your source documents.
- Click the merge button to process and download your combined PDF.

## Use cases

- Combining monthly financial statements into a single annual report.
- Merging individual chapter PDFs into a complete e-book or manual.
- Assembling a collection of legal documents or contracts into one organized file.

## Frequently asked questions

### Is there a limit to how many files I can merge?

You can upload up to 50 PDF files at once for a single merge operation.

### Does the tool change the quality of my original PDFs?

No, the tool preserves the original page content and formatting of your source files.

### How does the table of contents work?

If enabled, the tool automatically creates a page listing each file name and its corresponding starting page number.

### What are separator pages?

Separator pages are blank or title pages inserted automatically before each source document to help distinguish sections.

### What is the maximum file size allowed?

The total size for all uploaded files in a single session is limited to 500 MB.

## Related tools

- [PDF Batch Split](https://elysiatools.com/en/tools/pdf-batch-split): Split multiple PDF files by page ranges or single-page mode, packaged as ZIP
- [PDF Form Fill Batch](https://elysiatools.com/en/tools/pdf-form-fill-batch): Fill one PDF form template with an array of records and output one filled PDF per record (ZIP) or a merged PDF
- [PDF Reorder Pages](https://elysiatools.com/en/tools/pdf-reorder-pages): Reorder PDF pages with custom sequence, with optional append of remaining pages
- [PDF Deskew](https://elysiatools.com/en/tools/pdf-deskew): Automatically detect and correct skewed (tilted) PDF pages. Preserves text pages as searchable vector content and only rasterizes image pages (e.g. scans).
- [PDF N-up Layout](https://elysiatools.com/en/tools/pdf-nup-layout): Place multiple PDF pages as thumbnails on one page (2-up / 4-up / 8-up)
- [PDF Permissions Set](https://elysiatools.com/en/tools/pdf-permissions-set): Set password protection and permissions for PDF documents
- [PDF Secure Redaction Sanitizer](https://elysiatools.com/en/tools/pdf-secure-redaction-sanitizer): Permanently remove PDF text and hidden page objects by rebuilding an image-only PDF.
- [PDF Stationery Underlay](https://elysiatools.com/en/tools/pdf-stationery-underlay): Place document pages on top of stationery/background template pages (letterhead style underlay)

## 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
- [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
- [ASS Subtitle Samples](https://elysiatools.com/en/samples/ass-samples): Sample ASS subtitle files from simple to complex for style-aware subtitle parsing, translation, conversion, and localization QA

## Related content

- [PDF Utility Workflow for Assembly, Layout, Redaction, and Protection](https://elysiatools.com/en/hubs/pdf-utility): Prepare existing PDFs for delivery by reviewing typography, assembling pages, applying overlays, checking sensitive content, and adding access protection.