Merge PDF Files Online — Free

Combine multiple PDF files into a single document in seconds. Drop your files below, arrange the order, and download the merged PDF. Your files never leave your browser — completely private and free.

100% FreeNo upload — browser onlyInstant mergeWorks offline

Drop your PDF files here

or click to browse · select multiple files

Why Use This PDF Merger?

Completely Free

No subscription, no signup, no limits. Merge as many PDFs as you want, as often as you want.

No File Uploads

Your PDFs are processed locally in your browser. Nothing is sent to any server. Safe for sensitive documents.

Instant Results

Merging happens in seconds, not minutes. No waiting, no processing queues, no email required.

Works Offline

Once the page loads, merging works without an internet connection. Perfect for working on the go.

How to Merge PDF Files Online

Merging PDF files should be simple, but most tools require you to upload your documents to a remote server, create an account, or install desktop software. SigPDF's free PDF merger does none of that. Just drop your files on the page, arrange the order, and click merge.

The tool uses your browser's built-in capabilities to read each PDF, copy every page, and combine them into a single document. Because everything runs locally, it works even after the page has loaded with no internet connection. This also means your files are never transmitted over the network — ideal for confidential contracts, financial statements, legal documents, or any sensitive material.

Common Reasons to Merge PDFs

  • Combining contract pages — merge a cover letter, terms, and signature page into one document before signing
  • Consolidating reports — join monthly or quarterly reports into a single annual document
  • Preparing applications — combine your resume, cover letter, and supporting documents into one PDF
  • Organizing scanned documents — merge individually scanned pages into a complete document
  • Creating portfolios — combine multiple project files, designs, or presentations into a single PDF

Works With Any PDF

Whether your PDFs are single-page receipts or 500-page reports, the merger handles them. It preserves all text, images, fonts, links, form fields, and annotations from the original files. The only requirement is that the files can be opened without a password.

Frequently Asked Questions

How do I merge PDF files for free?
Simply drag and drop your PDF files onto the tool above, or click to browse and select multiple files. Arrange them in the order you want, then click 'Merge PDFs'. The combined file downloads instantly. No signup, no upload to any server — everything happens in your browser.
Is there a limit to how many PDFs I can merge?
There is no hard limit on the number of files. You can merge as many PDF files as you want. The only constraint is your device's available memory, since all processing happens locally in your browser. For most documents, merging dozens of files works without any issues.
Are my PDF files uploaded to a server?
No. All PDF merging is done entirely in your web browser using JavaScript. Your files never leave your device. We never see, store, or have access to your documents. This makes it safe for confidential contracts, financial statements, legal documents, or any sensitive material.
Can I reorder the PDFs before merging?
Yes. After adding your files, you can use the up and down arrow buttons next to each file to change the order. You can also remove individual files from the list. The final merged PDF will combine the files in the exact order shown.
Does the merged PDF lose any quality or formatting?
No. The merging process copies pages exactly as they are from each source PDF. All text, images, fonts, formatting, links, and annotations are preserved. The merged file is a perfect combination of the original documents with no quality loss.

Need to Sign Your Merged PDF?

Add your signature to any PDF document in seconds. Draw or type your signature, place it on any page, and download. No software needed.

Try SigPDF — Sign PDFs Online →