TextTool.in

PDF Merger

Merge multiple PDF files into one document quickly and securely. All processing happens in your browser — your files never leave your device.

Add your PDFs, arrange them in the correct order, customize the merge options, and download your combined document.

🔒 Local Browser Engine Ready

1. Select or Drop PDF Files

Up to 50 PDFs · Max 100 MB per file (250 MB total)
Drop your PDF files here

Select 2 or more PDF documents from your device, or drag and drop them into this box. You can add more files at any time.

🛡️ Your PDFs are processed locally in your browser. Files are not uploaded to our servers.

2. Arrange Files & Select Pages

The numbered list order below determines the exact sequence of your final merged PDF.

Valid PDFs Ready 0
Total Source Pages 0
Pages Included in Merge 0
Total Input Size 0 B

3. Merge Settings & Output Options

Original page dimensions and orientations are preserved for every copied page without rasterizing content.

Lossless Page Copy
Add at least 2 valid PDF files to enable merging.
Validating files... 0 / 0 pages
✅ Merge Complete

Your Merged PDF is Ready

Output Filename merged.pdf
Files Combined 0
Verified Output Pages 0
Final PDF Size 0 KB

Your combined PDF stays in browser memory so you can download it again without re-running the merge.

How to Merge PDF Files & Technical Notes

100% Client-Side Privacy

How to Merge PDF Files

  1. Click Choose PDF Files or drop multiple PDFs into the upload area (or click Load 3 Sample PDFs to try it immediately).
  2. Check the file names, file sizes, and real parsed page counts in the queue.
  3. Use Move Up (↑), Move Down (↓), or drag-and-drop cards to arrange documents in the desired sequence.
  4. Optionally click Pages & Preview on any file to inspect pages, enter a page range (such as 1-3,5), toggle individual pages, or rotate pages in 90° increments.
  5. Click Merge PDFs and watch the real-time page copying progress.
  6. Click Download Merged PDF to save your combined file.

About This PDF Merger

TextTool.in PDF Merger combines multiple PDF documents into one downloadable file. Select your documents, arrange their order, and merge them directly in your browser. Your PDF contents are processed locally instead of being uploaded to a remote merging service.

  • Source preservation: Original files on your device are never modified or overwritten.
  • Mixed page sizes: Each copied page retains its own original dimensions and orientation without rasterization.
  • Honest feature disclosure: Merging separate PDFs copies page trees into a new document container. Existing cryptographic digital signatures are invalidated when documents are combined, and certain document-level structures (such as cross-document bookmarks, embedded scripts, or complex XFA forms) may not carry over. Password-protected PDFs must be unlocked before merging.

Local Privacy & Browser Architecture

  • Zero server uploads: File bytes are read strictly via your browser's local FileReader / ArrayBuffer APIs.
  • No hidden telemetry: Filenames, page text, and document metadata are never transmitted to any analytics endpoint or external server.
  • CDN library note: When loaded online, the standard client-side pdf-lib and PDF.js scripts are fetched once from a version-pinned CDN, while all document parsing and merging happen entirely inside your device's RAM.