Are my merged PDF files uploaded to any server?

No. All PDF files are merged directly in your browser memory using client-side JavaScript. No documents are transmitted across the network.

Can I change the order of the files before merging?

Yes. You can use the Move Up (↑) and Move Down (↓) buttons or drag the items in the list to set the exact order of the final merged document.

Is there a limit on how many PDFs I can combine?

No artificial limits. You can merge 2, 10, or 50+ PDFs directly on your local device without registration or paywalls.

Offline PDF Merger & Combiner — 100% Client-Side

Offline PDF Merger & Combiner

Combine multiple PDF files into one clean document with custom order. Processed 100% inside your browser — zero servers, zero uploads, complete security.

📑

PDF Binder & Combiner

🔒 100% LOCAL

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Drop multiple PDF files here, or click to select

Select 2 or more files. Processed locally in memory.

⚡ OCR and search your documents on macOS with L2Cache

L2Cache provides on-device OCR and document search across your clipboard history — search scanned receipts, invoices, and documents without sending files to the cloud.

🍎 Get L2Cache for Mac

Why You Should Never Upload Confidential PDFs to Online Merge Tools

Merging documents is a daily task when assembling mortgage applications, tax filing packages, board decks, legal contracts, and medical histories. Standard online PDF mergers upload your full files to third-party web servers. This tool runs 100% in your browser using WebAssembly: your files never leave your computer's RAM.

How to Combine Multiple PDFs in 3 Steps

Upload Your PDFs: Drag and drop all the files you want to combine.
Set the Sequence: Use the ↑ and ↓ arrows to arrange files in the exact order you want them to appear.
Merge & Download: Click the Merge button to produce a single consolidated PDF instantly.

Frequently Asked Questions

Are bookmarks and hyperlinks preserved when merging?

Yes. PDF-lib copies the internal document structures, high-resolution vector assets, and fonts directly into the new container.

Is there a maximum number of files I can merge?

No. Since execution runs on your device's memory rather than a remote cloud server with artificial quotas, you can combine dozens of files simultaneously.

Offline PDF Merger & Combiner

⚡ OCR and search your documents on macOS with L2Cache

Why You Should Never Upload Confidential PDFs to Online Merge Tools

How to Combine Multiple PDFs in 3 Steps

Frequently Asked Questions

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