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PDF to PNG

Free online PDF merger

Merge PDFs, keep every detail

Merge PDF is a free tool that combines multiple PDF files into a single document. No signup, no upload — everything runs in your browser. Add files, set the order, and download the merged PDF.

Drop your PDFs, arrange the order, then hit Merge.

  • 100% free
  • No signup
  • No upload
  • Lossless merge
  • Up to 20 files

Drop PDF files here

or , or paste with Ctrl+V

Up to 20 PDFs, 200 MB each

How to merge PDF files

Three steps — free, browser-based, and nothing to install.

  1. Add your PDF files

    Drag PDF files onto the drop zone, click to browse, or paste from the clipboard with Ctrl+V (⌘V on Mac). You can add up to 20 files at once, 200 MB each.

  2. Arrange the order

    Use the arrow buttons to reorder the files. The final PDF will contain pages from each file in the order shown — first file's pages first, then the second file's, and so on.

  3. Download the merged PDF

    Hit Merge. The combined PDF is built in your browser and downloads automatically as merged.pdf. Original formatting, links, and fonts are preserved exactly.

Technical specifications

Input formatPDF — up to 200 MB per file
Output formatPDF — all pages combined into one document
QualityLossless — pages are copied, not re-rendered
ReorderingDrag files into any order before merging
Limits20 PDFs per batch, 200 MB per file
Processing locationYour browser — files are never uploaded
PriceFree — no signup, no watermark, no file quota
Works offlineYes, once the page has loaded

Frequently asked questions

How do I merge PDF files for free?
Drop two or more PDFs onto the merger above, arrange them in the order you want, then click Merge. The combined file downloads immediately. No account, no watermark, no limits on how many times you use it.
Is there a file size limit?
Each PDF can be up to 200 MB, and you can merge up to 20 files at once. Since the merge runs entirely in your browser, there is no server-imposed upload cap — your device's memory is the only constraint.
Does merging reduce quality or remove links?
No. The merger copies pages from each source document into the output without re-rendering or re-compressing anything. Text stays selectable, hyperlinks keep working, and fonts embed as they were.
Can I reorder the files before merging?
Yes. After adding your PDFs, use the up/down arrows next to each file to change its position. The pages appear in the merged document in the order you set.
Can I merge password-protected PDFs?
The tool attempts to open encrypted files, but heavily restricted PDFs may fail. If that happens, open the protected file in a PDF reader, save a copy without the password, and merge that copy instead.
Are my PDFs uploaded to a server?
No. The entire merge process runs inside your browser using JavaScript. Your files never leave your device — nothing is uploaded, stored, or logged. Close the tab and everything is gone.
What happens to bookmarks and table of contents?
Top-level bookmarks from each source file are preserved in the merged output. Nested bookmark trees and cross-document links may not carry over in every case, but page content is always kept intact.
How is this different from the other converters on this site?
The other tools convert between formats — PDF to PNG, PDF to JPG, images to PDF. This tool keeps everything as PDF: it takes multiple PDF documents and joins them into a single file without any format conversion.

About this tool

Merging PDFs means taking the pages from two or more documents and placing them in sequence inside a single file. Unlike format conversion, nothing is re-rendered: text stays as text, vector graphics stay as vectors, and embedded images stay at their original resolution. The output is a standard PDF that any reader can open.

This tool uses pdf-lib to copy pages between documents entirely in your browser. Each source PDF is read into memory, its pages are appended to a new document in the order you choose, and the result is handed to you as a download. Because no server is involved, there is no upload wait and no file-size throttle beyond your browser's available memory.

Common use cases: joining chapters into a single manuscript, combining scanned pages that arrived as separate files, or assembling a report from individually exported sections. If you need to convert a PDF into images instead, use the PDF to PNG converter or the PDF to JPG converter. Going the other direction? The PNG to PDF and JPG to PDF converters turn images into PDF documents.

Where your documents go

Nowhere. The merge runs entirely inside this browser tab — no file data is sent to a server, logged, or stored. Close the tab and everything is gone.