How do I combine two PDF files into one for free?

Go to Plainscan's Merge PDF tool, upload both files, arrange their order by dragging, and click Merge. Your combined PDF downloads instantly — free account required.

Is there a limit on how many PDFs I can merge?

Free users can merge files within their 5 daily tool uses. Pro users enjoy unlimited merges with no file count restrictions per session.

Will my merged PDF be searchable?

If the source PDFs were searchable (native/digital PDFs), the merged file will also be fully searchable.

How to Merge Multiple PDFs Into One File (Free & Online)

Q: Can I merge PDFs with different page sizes?

Yes. Plainscan's PDF merger handles documents with different page sizes (A4, Letter, etc.) in the same merged file. Each page retains its original dimensions.

Merging multiple PDFs into one clean, organized file is a task most professionals need regularly — whether you're compiling a report, combining invoices, or assembling a project proposal. Instead of sending five separate attachments, a single merged PDF is cleaner, more professional, and easier to manage. With Plainscan's free PDF Merge tool, you can combine any number of PDF files in the exact order you want — no software, secure processing.

How to Merge PDFs Online — Step by Step

Whether you're compiling chapters of a document or assembling supporting documents for a job application, merging PDFs should be simple and fast.

When Do You Need to Merge PDFs?

Combining multiple chapters of a document into one file
Assembling supporting documents (CV + cover letter)
Merging monthly reports into a single quarterly summary
Combining invoices and receipts for accounting
Creating a single presentation from multiple exported slides

Merge in 4 Simple Steps

Visit PDF Merge tool.
Upload all the PDF files you want to combine.
Arrange the order — drag files to set the exact sequence.
Click Merge PDF and download your combined file.

💡 Pro Tip: Consider compressing large PDFs individually using Plainscan's Compress PDF tool before merging to keep the final file size manageable.

Frequently Asked Questions

How Many Files Can I Merge at Once?

On Plainscan's free plan, you can merge multiple files per session (up to 5 daily tool uses). Pro users enjoy unlimited merges. There's no hard limit on the number of PDFs you can combine in one session.

Does Merging PDFs Affect Quality?

No. Merging PDFs is a non-destructive operation — your content, images, fonts, and formatting remain exactly as they were. The merger simply concatenates the pages.