Does the merger preserve hyperlinks and bookmarks?

Internal page-relative hyperlinks are preserved. Cross-document bookmarks and named destinations that reference other source files will not work after merging as they refer to the original file structure.

Can I reorder pages within a PDF, not just reorder files?

This tool reorders entire PDF files. To reorder individual pages within a document, you would first need to split the PDF into individual pages and then merge them in the desired order.

Does the PDF Merger upload my files?

No. All merging happens locally using JavaScript. Your PDF files never leave your browser.

Can I reorder the pages before merging?

Yes — drag the file rows into any order before clicking Merge. Pages are combined in the exact order shown.

Does it work with password-protected PDFs?

Password-protected PDFs cannot be read by pdf-lib. Remove the password protection first, then merge.

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

The tool itself has no limit. Very large PDFs may be constrained by your browser's available memory.

PDF Merger — Combine Multiple PDF Files Online Free

DROP PDF FILES HERE

or click to browse — add as many as you need

How to Use pdf-merger

Paste or enter your input into the text field.
Configure any options (format, delimiter, encoding, or mode) using the controls above the output.
The result updates instantly — no submit button required for most operations.
Click Copy or Download to take the output to your next step.

Combine multiple PDFs into one file — drag to reorder, download instantly. Free and browser-based — everything runs in your browser's JavaScript engine with no data sent to any server.

How pdf-merger Works

pdf-merger is a browser-side document utility built for speed and simplicity. Paste your input and the result appears within milliseconds. The tool handles edge cases — empty inputs, special characters, large datasets — without crashing or producing silent incorrect output. If you need a related operation, check the Related Tools section below.

Accepts large inputs — no size limits imposed by this tool
Handles edge cases: empty fields, special characters, and Unicode
Copy-to-clipboard and file download for every output
Works on Chrome, Firefox, Safari, and Edge without any extensions

Frequently Asked Questions

What does pdf-merger do?

pdf-merger combine multiple pdfs into one file — drag to reorder, download instantly. Results appear immediately — no page reloads, no waiting for a server response.

What input does pdf-merger accept?

Paste text directly into the input field, or type your data. Most operations handle Unicode, special characters, and multi-line inputs without issue.

How large an input can I process?

There is no hard limit imposed by this tool. Very large inputs (multi-MB text) process within your browser's available memory. For files larger than 50 MB, a command-line tool may be faster.

Can I download the output?

Yes — every output panel includes a Copy to Clipboard button and a Download as file option. Outputs are saved as plain text or the appropriate file format for the operation.

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