Classify the source material
Assume contracts, tax forms, medical records, and identity documents are sensitive. Prefer a local workflow and close unrelated tabs before handling them.
Set a deliberate order
Rename or list sources in their final sequence before merging. Cover letters, forms, supporting evidence, and appendices often require a human order rather than alphabetical filenames.
Use ranges to remove unnecessary pages
Exclude blank scans, instruction sheets, and duplicated pages. Record ranges against the visible source page count instead of guessing.
Verify the exported document
Open the downloaded PDF in a separate viewer. Check page count, orientation, searchable text, signatures, and every transition between source files.
Understand what page copying cannot promise
A merger copies visible page content, but a digitally signed source can lose its trustworthy signature state after modification. Interactive form fields, attachments, bookmarks, scripts, layers, and unusual annotations may also behave differently in the new document. If any of those features matter, compare the source and result in the application that will consume the file. Do not describe a merged document as certified or signature-preserving. Keep every original unchanged so the recipient can request a source document when verification is required.
Finish the privacy workflow
Local processing prevents the document body from being uploaded to this tool, but the downloaded result still exists on the device. Save it to an intentional folder, verify sharing permissions before attaching it, and remove temporary copies according to your own retention rules. Browser history and ordinary hosting request logs can record that the page was visited, not the contents of the selected PDFs. Closing the tab releases in-memory processing data; it does not automatically delete files already saved by the browser.