Merge PDF Files Online

Combine several PDFs into a single file, in whatever order you need. Add your files, reorder them with the arrow buttons, and download one merged PDF — everything happens locally in your browser, so the files never leave your device.

What Is This Tool?

A PDF merge takes two or more separate PDF files and stitches their pages together into a single new document, preserving each page exactly as it was — text, images, formatting and all.

This tool loads each PDF you add, reads its page count, and copies every page into a new document in the order you set. There's no server round-trip: the parsing, copying and final assembly all run in JavaScript in your own browser tab.

Why Use It?

Reorder before merging — up/down arrows let you get the sequence right without renaming files.
No file-count or file-size caps imposed by a server, and no watermark stamped on the result.
Private by design: contracts, scanned IDs, tax forms and other sensitive PDFs never touch a server.
Works offline once the page has loaded — no waiting on an upload queue for large files.
Free, and the merged file is named simply merged.pdf, ready to rename and send.

How to Use

Click the drop zone or drag in two or more PDF files.
Check the page count shown under each file to confirm they loaded correctly.
Use the ▲ / ▼ buttons to put the files in the order you want them combined.
Remove any file you don't need with the ✕ button.
Click "Merge PDFs" and download the resulting merged.pdf.

Example

Input

cover-letter.pdf (1 page), resume.pdf (2 pages), references.pdf (1 page)

Output

merged.pdf — 4 pages, in that exact order

Reordering with the arrow buttons before merging avoids having to redo the whole thing.

Common use cases

Combining a cover letter, resume and references into one PDF before submitting a job application.
Merging scanned receipts or invoices into a single file for expense reports or bookkeeping.
Assembling chapters or sections of a report, thesis, or e-book that were exported as separate PDFs.
Putting together a signed contract with its attachments or exhibits into one document to send.

Merging, then splitting again

Merging and splitting are two sides of the same task, and you'll often need both in the same workflow — for example, merging several scanned pages into one PDF, then later extracting just a subset of pages to share separately. If you need to pull specific pages back out of a PDF (yours or someone else's), the PDF Splitter handles that with the same local, no-upload approach.

→ PDF Splitter · Image Compressor

Frequently Asked Questions

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

No server-imposed limit — you can add as many files as your browser's memory can comfortably hold. Very large batches (dozens of large PDFs) may slow down depending on your device.

Will merging change the quality or formatting of my pages?

No — pages are copied as-is, including embedded fonts, images and vector content. The merge only changes page order and combines them into one file; it doesn't re-render or compress anything.

Can I merge password-protected PDFs?

The tool can open PDFs that use owner-level restrictions (like print/copy locks) but not ones that require a password just to view. If a file needs a password to open, remove that password in a PDF reader first.

Are my files uploaded anywhere?

No. Reading, reordering and merging all happen in your browser using JavaScript. Your PDFs never leave your device — there's nothing to upload and nothing stored on a server.

Can I change the order after I've already merged?

You'd need to re-add the source files and reorder them again, since the merge produces a fresh combined PDF rather than an editable project. Get the order right in the list before clicking Merge.