PDFs
Free Online PDF Merger
Combine several PDF files into one document.
Supports PDF.
Processed on your device
What this tool does
PDF Merger joins two or more PDF files into one download. You can change the order and remove a file from the queue before combining them. The merged document is a new file. The originals are not modified.
How to merge PDFs
- Add at least two PDF files.
- Use Up and Down to put them in the order you want, or Remove a file you no longer need.
- Click Merge PDFs and save the download.
Supported files
- Standard PDF files that are not encrypted.
- Up to 20 files, 80 MB each, and 500 pages combined.
Limitations
Corrupted files, encrypted files, and PDFs that use unsupported features show an error instead of a partial or remote conversion. XFA forms and PDF portfolios are outside what this tool promises. To keep only some pages from a single file, use the PDF Splitter.
Privacy
File bytes stay in the tab’s memory for the merge, then the result is downloaded. Filenames are not written into the merged PDF metadata. The document title is set to “Merged document.”
Frequently asked questions
Are the PDFs uploaded?
No. The files are read in this tab and combined with a PDF library that runs locally. There is no upload endpoint.
Can I merge an encrypted PDF?
No. Password-protected and other encrypted PDFs are rejected. BrowserToolbox does not ask you to upload them for remote unlocking.
How many files can I combine?
Up to 20 PDF files and 500 pages in one merge. Each file must be 80 MB or smaller. Reorder the list before merging.
Will form fields and comments survive?
Pages are copied into a new document. Interactive form behavior, attachments, and some specialized PDF features may not carry over. Check the download before you rely on it.