No data leaves your browser

Merge PDF Files

Combine multiple PDFs into one document. Reorder pages easily. Processing happens entirely on your device.

Drop PDFs to merge
or click to choose

Tip: Use the arrows in the list to rearrange the order before merging.

Files will appear here
Total files
0
Total size
0 B
Status
Waiting for files…
Action

What is a PDF Merger?

A PDF Merger is a document management utility that combines multiple independent PDF files into a single continuous document. Instead of sending five separate attachments in an email, you can merge them into one organized file, ensuring the recipient reads the pages in the correct sequence.

How to Merge PDFs Online

  1. Upload your files — drag and drop your PDFs into the designated dropzone. You can add as many files as you need.
  2. Reorder the documents — click and drag the file thumbnails to arrange them in your preferred order. The top left file will become page 1.
  3. Merge — click the "Merge PDFs" button. The tool will stitch the files together instantly.
  4. Download — save the final combined PDF directly to your local drive.

Examples / Use Cases

Use Case 1: Compiling Portfolios

Designers and architects often export different projects from different software (like Photoshop, AutoCAD, and Word). You can drop all these separate PDF exports into the merger to create one comprehensive professional portfolio.

Use Case 2: Legal Document Assembly

Paralegals often need to bundle a primary contract with several supporting addendums and signature pages. Instead of printing and scanning them together, dragging the files into this tool merges them digitally in seconds.

Advantages and Limitations

  • Advantages: The merging process is incredibly fast because it does not require uploading files to a server. It runs locally using WebAssembly. There are no file size limits or paywalls blocking you from merging large documents.
  • Limitations: This tool merges whole files. It does not allow you to pick and choose specific pages from within those files to merge (e.g., you cannot merge just page 2 of File A with page 5 of File B).

Privacy & Security

Your documents are completely secure. This PDF merger is built using a local-first architecture. It utilizes client-side WebAssembly to stitch the PDFs together directly inside your browser's memory. Your private contracts, legal documents, and personal portfolios are never uploaded to our servers.

Frequently Asked Questions

Is there a limit to how many PDFs I can merge? ▼

There are no artificial limits. You can merge 5, 50, or 500 files, limited only by your computer's available RAM.

Will merging reduce the quality of my PDFs? ▼

No. This tool performs a lossless merge. It simply copies the exact pages and data streams from the source files and binds them into a new container, preserving 100% of the original resolution and text quality.

Can I merge password-protected PDFs? ▼

No. You must remove the password protection from the individual files before attempting to merge them, as the engine cannot read encrypted data streams.