What Merge PDF does
Merge PDF copies pages from each selected document into a new PDF, processing the files in the order shown by the chooser. It can join from two through twenty inputs while enforcing a combined 100-page limit.
The browser validates the PDF signature and rejects password-protected, corrupt, unsupported, or detectably active documents. Page content is copied rather than rasterized, but document-level structures do not necessarily combine the way pages do.
How to use Merge PDF
- Choose between two and twenty PDF files, each no larger than 25 MB.
- Confirm that the file list is in the order you want in the combined document.
- Merge the PDFs, then download and inspect the first and last page of every source section.
Important details
Page order follows input order
Every page from the first selected file is copied before pages from the next file. Rename or select files carefully when chronological or chapter order matters.
Merging pages is not full document reconciliation
The new file contains copied pages, but bookmarks, portfolio structures, embedded attachments, document scripts, and document-level signatures are not a reliable merge target. Detectable active features are rejected up front.
Practical uses
- Join several scanned receipts into one expense packet.
- Combine a cover sheet, report, and appendix for delivery.
- Assemble separately exported chapters into one review document.
Privacy and limitations
PDF parsing, page copying, and output generation all happen in the browser. The selected documents are not uploaded to PagesTools.
Each PDF is limited to 25 MB, there can be no more than twenty files or 100 combined pages, and encrypted or malformed files cannot be processed. Merging can invalidate signatures and may not preserve bookmarks, forms, attachments, or other document-level features.