PDF and document tools

PDF Merger

PDF Merger

Ready

Source PDF files

Local processing

Your document stays on this device. Processing runs in browser memory, and very large files depend on the RAM available in your browser.

Merged PDF summary

No PDF file loaded yet. Drop a file or click "Load example" to start.

Local processing

Press Ctrl or Command and Enter to run the tool.

About this tool

About this tool

PDF Merger merges multiple PDF files into one continuous document using client-side JavaScript. Files are read, ordered, and combined in your browser memory without uploading.

Combine invoices, chapters, and separate PDF files into a single unified document. Arrange file order alphabetically or by upload sequence while keeping all document assembly on your local device.

Built for daily work

  • Combine monthly financial statements and receipts into an annual tax package.
  • Merge individual contract addendums into a single signed agreement.
  • Compile student assignments and worksheets into one course booklet.
  • Merge cover pages and appendices onto main project proposals.

How to use this tool

How to use this tool

1

Select multiple PDF files

Choose two or more PDF documents from your computer or drop them into the multi-file upload box.

2

Set the merge order

Choose to merge files in the order uploaded or sort them alphabetically by filename.

3

Run the merge tool

Click Merge PDFs to combine all selected pages into a single document in browser memory.

4

Download the combined PDF

Save the newly merged PDF file directly to your local computer.

Key features

Key features

Multi-file local merging

Combine any number of PDF files into a single master document without server upload queues.

Flexible sorting controls

Sort files alphabetically from A to Z, Z to A, or keep exact upload order.

Optional blank page insertion

Insert blank pages after odd-length documents to ensure chapters start on right-hand facing pages for double-sided printing.

Zero cloud uploading

All PDF parsing and merging execute inside your browser memory for complete privacy.

Practical use cases

Practical use cases

  • Combine monthly financial statements and receipts into an annual tax package.
  • Merge individual contract addendums into a single signed agreement.
  • Compile student assignments and worksheets into one course booklet.
  • Merge cover pages and appendices onto main project proposals.

Private by default

For local tools, input is processed in your browser and is not sent to application analytics.

Data processing notice

Technical details

Technical details

Input formatsMultiple PDF files
Output formatsPDF
ProcessingLocal browser multi-document assembly
Task controlsFile sort order, odd-page blank insertion checkbox
Maximum local file25 MB per PDF file
Workspace featuresFile list inspection, automatic sorting, instant local export

Limitations and important notes

Limitations and important notes

  • Password-protected input files must be decrypted before merging.
  • Interactive form fields with identical names across files may merge into shared values.
  • Always review the combined document sequence before printing or publishing.

Frequently asked questions

Frequently asked questions

Related guides and solutions

Related guides and solutions

Browse all guides

How to merge multiple PDFs on your computer without installing software

A no-install guide to merging PDFs with the [PDF merger](tool:pdf-merger): choosing the order, merging mixed-size documents, and verifying the result before you share it.

Learn more

How to combine tax documents securely without uploading them to the cloud

A privacy-focused guide to merging tax documents with the [PDF merger](tool:pdf-merger): how browser-local processing differs from cloud tools, what stays on your device, and how to verify the finished file.

Learn more

Combine confidential PDF documents locally without server uploads

Assembling contracts, financial records, and legal reports should never expose sensitive data to remote servers. Merge PDF files entirely in your browser memory with the [PDF merger](tool:pdf-merger).

Learn more

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