FINBIZTOOLS

Merge PDF

Combine multiple PDF files into one single document in your chosen order with fast client-side merging.

Your file is processed in your browser and does not need to be uploaded to our server.

How to merge PDF documents

Select two or more PDF files. Use the Up (↑) and Down (↓) buttons in the file list to arrange the documents in your desired order. Click Merge PDFs to assemble all pages into a single organized document.

Page preservation

Merging preserves original page dimensions, orientations (portrait and landscape), embedded fonts, and vector artwork across every included document.

100% Client-side privacy

Your documents are merged directly in your browser using WebAssembly and JavaScript. No files are uploaded to our server or saved in the cloud.

Frequently asked questions

Can I merge files with different page sizes?

Yes. Each page retains its original orientation and dimensions (e.g. mixing A4 and Letter pages).

What happens with password-protected files?

Encrypted or password-protected PDFs cannot be processed. Please unlock the PDF before merging.

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Disclaimer

Merged documents combine pages sequentially. Verify bookmarks and pagination where formal legal indexing is required. Read our Disclaimer.