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June 1, 2026

How to Merge PDF Files — Free, No Software Required

Combining multiple PDF files into one document is one of the most common PDF tasks. You might need to merge a cover letter with a CV, combine scanned pages into a single report, or bring together chapters of a longer document.

This guide walks you through the process using PDFEverything — a free, browser-based tool that requires no installation or sign-up.

Why merge PDFs in a browser?

Desktop PDF software can merge files, but it often requires installation, a licence, or an account. Browser-based merging is faster to start: open the page, add your files, done. Everything runs locally in your browser using WebAssembly — your files are never uploaded to any server.

Step-by-step: merging PDF files

1. Open the Merge PDF tool

Go to PDFEverything — Merge PDF. The tool loads directly in your browser.

2. Add your PDF files

Click the upload area or drag and drop your PDF files. You can add as many files as you need — there is no hard limit.

3. Arrange the order

Drag the file cards into the sequence you want. The merged PDF will follow that exact order. If you want to put file B before file A, just drag it up.

4. Download the merged PDF

Click the merge button. The tool combines the files in your browser and offers you the result as a download. The original files on your device are not modified.

Tips for clean merges

  • Page size consistency: If your files have different page sizes (for example, some are A4 and some are Letter), the merged PDF will contain pages of mixed sizes. Use the Resize PDF tool first to standardise them if needed.
  • Password-protected PDFs: Locked PDFs need to be unlocked before merging. Use the Unlock PDF tool, then merge the resulting files.
  • Large files: Very large PDFs can take a moment to process. The tool works entirely in your browser, so performance depends on your device's memory.

What you get

A single PDF containing all the pages from your input files, in the order you arranged them. Fonts, images, and formatting from each source file are preserved.

Merging is entirely private — your documents stay on your device throughout the process.