Merge PDF

Combine multiple PDF documents into one securely and offline.

Processed within your browser. No server uploads.
Click to select PDF files (Multiple allowed)
*Max 10 files per merge for stability
100% Private & Secure:
Your confidential documents are never sent over the internet. All processing happens locally.

Worried About Privacy When Merging Sensitive PDFs?

We built ITKB PDF Merge to solve the common frustrations of online document handling:

❌ Data Privacy Risks Uploading ID copies or contracts to a server is risky. You never know where your data ends up.
❌ Annoying Upload Times Waiting for large PDF portfolios to upload and download is a waste of your valuable time.
❌ Clunky File Reordering Most tools make it hard to change the sequence of pages without starting over from scratch.
❌ Paid Subscription Walls Finding a truly free, unlimited, and watermark-free PDF merger is harder than it should be.

✨ ITKB lets you merge PDFs with "Drag & Drop" ease, 100% locally in your browser. No uploads, no risks!

Merge PDF Online Free! Fast, Secure, and Easy Reordering

Combine multiple PDF documents into one professional file instantly. Our Merge PDF tool is powered by PDF-lib, allowing for high-speed client-side processing. Whether you’re organizing business reports, school assignments, or personal documents, ITKB ensures your files stay on your machine—where they belong.

100% Private & Secure

Documents are processed locally in your browser’s memory. We never see, store, or share your files. Period.

Drag & Drop Reordering

Easily rearrange your file sequence. Simply drag the file cards to get the perfect order before merging.

Instant Results

Zero waiting for uploads. Large PDF files are merged in seconds using your local hardware's power.

How to Combine PDFs (3 Easy Steps)

STEP 01

Upload Your Files

Click the upload area and select multiple PDF files. You can add up to 10 files at a time for optimal performance.

STEP 02

Arrange the Sequence

Use the Drag & Drop feature to move files up or down until they are in the correct order for your final document.

STEP 03

Merge & Download

Click "Merge PDFs Now". Once finished, download your combined high-quality PDF file instantly.

Frequently Asked Questions (FAQ)

Q: Is it safe to merge sensitive work documents here?

A: **Absolutely.** ITKB processes everything on the client-side. This means your files never leave your device. It is one of the safest ways to handle confidential documents online.

Q: Why is there a limit of 10 files per merge?

A: To ensure stability and prevent browser crashes on lower-end devices, we recommend merging up to 10 files at a time. If you have more, you can merge them in batches.

Q: Why did I get an error when merging?

A: Most errors occur because one of the PDF files is **password-protected (encrypted)**. Our tool cannot access encrypted data for security reasons. Please unlock your file before merging.

Q: Can I use this on my iPhone or Android?

A: Yes! Our responsive design and client-side engine work perfectly on Safari and Chrome on mobile. You can pick files directly from your mobile storage and merge them on the go.