2026-07-31
The Complete Guide to Merging PDFs Without a Processing Upload
Merge PDFs in your browser, verify the processing boundary, and review the finished packet before sharing.
Choose the right files and order
Use copies or approved source files, select up to the published browser input limit, and arrange them in the order the recipient should read them. The current limit and accepted format are published in the LocalPDF capability manifest.
Merge and verify the result
The supported merge workflow processes selected PDF bytes in browser memory without a document-byte upload to LocalPDF. Download the result, then open it independently and check page count, order, orientation, and any forms or signatures before relying on it.
Treat sharing as a separate privacy boundary
Browser-local processing reduces processing-server exposure but does not secure your device, browser extensions, download folder, email, or later storage. Follow your organization’s document-handling rules for the completed packet.