Private by design
Your PDFs are processed locally in your browser instead of being uploaded to a server.
How to Merge PDF Files Online
A simple guide to combining PDFs privately in your browser.
Simple PDF tools
How to merge PDF files
Combine multiple PDF documents into one organized file in four straightforward steps.
- 1
Select your PDF files
Choose the PDF documents you want to combine or drag them into the merger.
- 2
Arrange the files
Move the files into the order you want them to appear in the finished document.
- 3
Customize and merge
Set section titles, choose whether to include a clickable table of contents, and merge.
- 4
Preview and download
Review the combined PDF, then download it to your device.
Why use PDF Pool?
A free PDF merger built for privacy
Fast and convenient
Merge PDF files without installing software or waiting for an online upload.
Organized results
Reorder documents, add section titles, and create a clickable table of contents.
FreeNo subscription
PrivateFiles stay in your browser
FastNo upload wait
Works anywhereDesktop or mobile browser
The full toolset
Every tool runs in your browser
PDF Pool has grown beyond merging — every tool below processes your files locally, the same way the merger does.
Merge PDF
Combine multiple PDFs into one, with an optional clickable table of contents. Word (.docx) files and images are converted to PDF automatically when you add them.
Split PDF
Split a PDF by page ranges or every N pages into separate files.
Organize PDF
Reorder or delete pages using page thumbnails.
Rotate PDF
Rotate all or selected pages by 90°, 180°, or 270°.
Crop PDF
Trim margins from every page by a set amount.
Watermark PDF
Stamp text over every page with adjustable size, opacity, and angle.
Page Numbers
Add page numbers in the position and format you choose.
Compress PDF
Shrink file size by re-rendering pages as compressed images — best for scanned PDFs; text becomes non-selectable.
PDF to PDF/A
Add PDF/A identification metadata (not a certified conformance tool).
HTML to PDF
Convert an uploaded HTML file into a PDF snapshot, rendered in a sandboxed frame with scripts disabled.
JPG to PDF
Combine JPG, PNG, WEBP, GIF, or BMP images into one PDF.
PDF to JPG
Export each PDF page as a JPG or PNG image.
About the tool
What is a PDF merger?
A PDF merger combines two or more PDF files into a single document. It can help when joining reports, invoices, assignments, applications, scanned documents, or supporting paperwork.
PDF Pool runs in modern web browsers and processes files on your device, so you can combine documents without sending them to an external service.
Useful for everyday paperwork
Merge documents for applications and records
Use PDF Pool to combine reports, invoices, financial records, employment letters, school documents, scanned records, visa paperwork, and other supporting documents into one file.
For important submissions, check the receiving office's file-size, page-order, naming, and document requirements before uploading your merged PDF.
Answers
Frequently asked questions
Can I merge PDF files for free?
Yes. PDF Pool is free to use in your browser and does not require a subscription or software installation.
Are my PDF files uploaded to a server?
No. The merger processes files locally in your browser. Your documents do not need to be uploaded to a server.
Can I combine multiple PDF files into one?
Yes. Select multiple PDF files, arrange their order, and merge them into one combined PDF document.
Does the PDF merger work on Mac and Windows?
Yes. It works in modern browsers on Mac, Windows, Linux, and supported mobile devices.
Are the other tools (Split, Compress, HTML to PDF, etc.) also private?
Yes. Every tool processes your files locally in your browser, the same way the merger does. See the Privacy & security page for tool-specific notes on Compress, HTML to PDF, and PDF to PDF/A.