How many PDFs can I merge?

There is no hard limit. You can merge as many PDFs as you like, though very large files may use significant browser memory.

Can I reorder the PDFs before merging?

Yes. Drag and drop the PDF rows to set the order. The merged PDF will contain pages in the order shown.

Will the merged PDF preserve bookmarks and links?

The tool preserves page content and basic structure. Complex features like bookmarks, form fields, and interactive elements may not be fully preserved in the merged output.

Is there a file size limit?

There is no enforced limit, but very large PDFs (hundreds of MB) may be slow to process in the browser. For best performance, keep individual files under 50MB.

Are my PDFs uploaded to a server?

No. All merging is done client-side using the pdf-lib library. Your files never leave your device.

How many PDFs can I merge at once?

There is no limit on the number of PDFs you can merge. However, merging very large files may be slow depending on your device's memory.

Can I reorder the files before merging?

Yes. Drag and drop the uploaded files to arrange them in the order you want before clicking Merge.

Do my PDF files get uploaded anywhere?

No. pdf-lib handles all merging locally inside your browser. The merged document is assembled in memory on your device, then downloaded directly — no cloud storage involved.

Does merging reduce PDF quality?

No. The tool preserves the original quality of all pages from all input PDFs.

Merge PDF — Combine PDF Files Online Free

Merge multiple PDF files into one document online. Drag to reorder pages. Free, no upload required — runs entirely in your browser.

Click to upload or drag & drop

PDF files · Multiple files supported

100% Private

No Upload

Instant

What is Merge PDF — Combine PDF Files Online Free?

A PDF merger combines two or more PDF files into a single document. This is useful for combining reports, contracts, invoices, or any collection of PDF documents into one file for easy sharing and archiving. Our PDF Merger uses pdf-lib running entirely in your browser — your files are never uploaded to any server. You can drag and drop to reorder the files before merging.

How to Use Merge PDF — Combine PDF Files Online Free

1Upload two or more PDF files by clicking the upload area or dragging them onto the tool.
2Drag the files to reorder them in the desired sequence.
3Click Merge to combine all files into a single PDF.
4Download the merged PDF with one click.

Key Features

Merge unlimited PDF files into one document
Drag-and-drop reordering before merging
Preserves original page quality and formatting
Runs entirely in your browser using pdf-lib

Benefits

Combine multiple reports into a single document
Merge scanned pages into one PDF
Organize contracts and invoices into one file
Keep documents private — no server upload

Use Cases

How to merge PDFs free Merge PDF on Mac Merge PDF on Windows Merge without Acrobat

Why Use Irreva for Merge PDF — Combine PDF Files Online Free?

Combine multiple reports into a single document

Merge scanned pages into one PDF

Organize contracts and invoices into one file

Runs 100% in your browser — files never leave your device.

No account, no sign-up, no subscription — free forever.

Works on any device: desktop, tablet, or mobile.

Frequently Asked Questions

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