Is there a file size limit?

Browser memory limits apply. Most documents under 50MB work well.

Yes. All PDF tools on Ranburg.com are free.

How to Use PDF Merge — Free Guide

Featured free tool

PDF Merge

Combine multiple PDF files into one document — drag, drop, merge.

PDF Tool

Open tool View tool page

What is the PDF Merge?

Combine multiple PDF files into one document — drag, drop, merge. The PDF Merge on Ranburg.com is a free, browser-based utility — no signup, no install. This guide explains how to use it effectively and when to reach for it in your daily workflow.

Combine multiple PDF files into one document — drag, drop, merge.

Try the PDF Merge Now

Open the free PDF Merge at ranburg.com/tools/pdf-merge. Results update instantly as you change inputs. Bookmark the page for repeat use — it works on desktop and mobile browsers.

How to Use It Step by Step

Step 1

Upload two or more PDF files.

Step 2

Drag to reorder if needed.

Step 3

Click Merge and download.

How It Works

pdf-lib copyPages → single PDFDocument

Tips for Best Results

Use the PDF Merge for quick, repeatable tasks rather than one-off guesses. Compare multiple scenarios by adjusting inputs, export or copy results, and pair this tool with related utilities listed on the tool page. For production or compliance decisions, validate outputs with official sources or qualified professionals.

Conclusion

The PDF Merge is one of 40+ free tools on Ranburg.com. Use this guide as a reference, then head to /tools/pdf-merge whenever you need pdf tool workflows done fast.