How many PDF files can I merge at once?

There is no hard limit on the number of files. You can merge as many PDFs as you need, as long as your device has enough memory to process them. In practice, dozens of files work perfectly.

Are my PDFs uploaded to a server?

No. All processing happens entirely in your browser using the pdf-lib JavaScript library. Your files are never sent to any server. They stay on your device throughout the entire process.

Will the page formatting be preserved?

Yes. The merger copies pages directly from the source PDFs without re-rendering them. All fonts, images, vector graphics, and layouts are preserved exactly as in the originals.

Can I merge password-protected PDFs?

Currently, the tool works best with unprotected PDFs. If your PDF is encrypted or password-protected, you'll need to remove the protection before merging.

What happens to embedded bookmarks and links?

The page content is preserved in full. Embedded hyperlinks within pages are maintained. However, document-level bookmarks (table of contents entries) from the source files are not automatically merged into a combined outline.

PDF Merger

Merge PDF files
instantly, free

Combine multiple PDF documents into a single file in seconds. Drag to reorder, then merge — everything happens in your browser.

Drop PDF files here, or click to browse

or click to browse — up to 100 MB per file

PDF files only · Multiple files supported

100% PrivateBrowser-basedNo signupFree forever

What does merging PDFs mean?

Merging PDFs means combining two or more separate PDF documents into a single, continuous file. The pages from each source document are concatenated in the order you specify, resulting in one PDF that contains all the content from the originals.

This is one of the most common PDF tasks people need. Whether you have a report split across multiple files, scanned documents you want to combine, or contracts that need to be packaged together — a PDF merger saves you from managing multiple files and simplifies sharing.

QuickConvert handles this entirely in your browser using the pdf-lib library. Your files are never uploaded to any server. The merged PDF is generated on your device and downloaded directly — fast, private, and completely secure.

How to merge PDFs

1
Drop your PDF files into the upload area above, or click to browse your device. You can add multiple files at once.
2
Drag the files up or down in the list to arrange them in the order you want them to appear in the final document.
3
Click "Merge PDFs & Download" — your merged PDF is created instantly and downloaded to your device.

Why use QuickConvert?

No file size limits

Merge PDFs of any size up to 100 MB each. The only limit is your device's available memory.

Browser-based & private

Your PDFs never leave your device. All processing happens locally in the browser — zero server uploads.

Preserve formatting

Fonts, images, layouts, and formatting are perfectly preserved from the original documents.

Reorder before merging

Drag files up and down to set the exact page order before generating the final PDF.

Common use cases

Combine report sections

Merge chapters or sections created separately into one final deliverable PDF document.

Consolidate scanned documents

Combine multiple scanned pages into a single searchable PDF for easier filing and sharing.

Package contracts

Bundle a contract with its appendices, exhibits, and cover letter into one PDF for signing.

Compile presentations

Merge slides from different decks into one master presentation for a board meeting.

Learn more

✦How to merge PDF files: complete guide ✦Best free PDF tools in 2026

Frequently asked questions

Related PDF tools

📄

Split PDF

Split a PDF into multiple files

📄

Compress PDF

Reduce PDF file size

📄

Extract Pages

Extract specific pages from a PDF

📄

Rotate PDF

Rotate pages in a PDF file

Ready to pdf merger?

Free, instant, and 100% private. No upload, no account required — works entirely in your browser.

Start now — it's free

Merge PDF filesinstantly, free