A free PDF combiner that runs in your browser
OnlineCombinePDF.com merges several PDF documents into one file without asking you to install anything, create an account, or hand over an email address. Most online PDF mergers upload your documents to a server, process them there, and promise to delete them later. This one does not upload them at all: the merge is performed by JavaScript inside your browser, and the finished PDF is saved directly to your device. That is why it works the same on a work laptop with locked-down software policies, a personal Mac, a Chromebook, or a phone.
The limits are simple. You can add up to 20 PDF files per merge, each up to 200 MB. Every file in the list can contribute all of its pages or a specific page range, and you can drag files up and down to set the final order. Pages are copied as they are, so fonts, images, and vector graphics come through unchanged and the output carries no watermark.
How to combine PDF files
To combine PDF files, select Merge PDF at the top of the tool, drag your documents into the upload area or click Upload to browse for them, put them in the order you want, and click Merge. The combined file downloads immediately. If you only need part of a document — the signed pages of a contract, say, or one chapter of a report — turn off "All pages" for that file and enter the start and end page instead.
Merge PDFs without installing software or signing up
Desktop PDF suites are expensive, and many free online tools trade your email address for a download link. Because this merger runs in the browser, it needs neither. There is no install on Windows, macOS, or Linux, and on iPhone, iPad, and Android you can pick files from the Files app, merge them, and save the result without an app. If you are working on a shared or restricted computer, nothing is left behind afterwards: no application, no cached copy on a remote server, and no account to log out of.
Convert images to PDF, then merge
Merge PDF mode accepts PDF files only. If part of your document is a photo, screenshot, or scan, convert it first with the dedicated JPG to PDF, PNG to PDF, TIFF to PDF, or SVG to PDF tool, then add the resulting PDF to your merge batch. Each converter uses the same limits and the same in-browser processing as the merger.
Who this is for
- Job and visa applications: combine a CV, cover letter, and certificates into one PDF in the order the form asks for.
- Contracts and invoices: merge the signed pages back into the original document, or bundle a month of invoices into one file.
- Students and researchers: collect lecture slides, papers, and notes into one document for reading or printing.
- Confidential documents: medical records, financial statements, and legal paperwork never leave your device, so there is no third-party copy to worry about.