When should I use it?
Use when assembling reports, invoices or scanned pages without uploading confidential PDFs.
Online PDF Utility
PDF Merge
Combine multiple PDFs locally. Reorder, rotate, remove, then download a single merged file.
100% Browser-Based Processing — Your files never leave your device. No uploads, no server processing, complete privacy.
✓ Browser Processing
✓ No Upload
✓ Privacy First
✓ Free Forever
✓ Works Offline
Choose PDF files
Drag & drop here, browse, or paste with Ctrl+V
File Details
Filename—
File Size—
Pages—
PDF Version—
Encrypted?—
Author—
Created—
Modified—
Large PDF detected. Processing may use more browser memory — keep other tabs light.
Preview
Tool Options
Working…
FreeConverter.app Guide
What does PDF Merge do?
Combine multiple PDF files into one document entirely in your browser.
Who is it for?
Developers, marketers, students, and anyone who needs a free browser utility.
Example input
Paste text, markup, or choose a local file (processed only in this browser tab).
Example output
Instant on-device result you can copy or download — nothing leaves your device.
Browser processing100% in-browser
PrivacyLocal Processing
UploadNot required
DifficultyEasy
How It Works
Private, local PDF processing in three steps.
1
Choose file
Drag & drop, browse, or paste a file. Nothing is uploaded.
→
2
Process in browser
All work runs locally with PDF.js / pdf-lib.
→
3
Download result
Save the output instantly to your device.
Zero server upload — every step runs inside your browser.
About PDF Merge
Merge unlimited PDFs in your browser. Drag reorder, rotate before merge, remove files, and download merged.pdf — no uploads. Built for privacy-first workflows: open the tool, choose a file, process locally, and download — without creating an account or sending documents to a server.
FAQs
No. FreeConverter.app merges PDFs locally when browser APIs support it.
Limits depend on device memory. Very large packs may need desktop software.
Password-protected files may need unlocking first or may be rejected by the browser API.
Arrange files in the tool UI before merging so the final PDF follows your order.
Best in current Chromium and Firefox builds with sufficient memory.
Local processing — FreeConverter does not store your PDF contents.
No. Processing is 100% browser-based. Your files never leave your device.
No. Any modern browser is enough.
Yes. FreeConverter.app online PDF tools are free to use.
No. FreeConverter.app processes this tool locally in your browser. Your input is not uploaded to our servers.
No. PDF Merge on FreeConverter.app is free to use without creating an account.
Developers, marketers, students, and anyone who needs a free browser utility.