Think in sections, not filenames
The correct order should follow the reader's workflow: cover page, main document, schedules, attachments and supporting evidence. File creation dates and default filenames are not reliable indicators of that logical order.
Write down the intended section sequence before choosing files. This takes seconds and avoids reopening a long merged PDF just to discover that one attachment was placed too early.
Use stable naming
Numeric prefixes make ordering obvious across Windows, macOS and mobile file pickers. Names such as 01-cover.pdf, 02-report.pdf and 03-appendix.pdf sort predictably and reduce selection errors.
Do not rename files in a way that hides their original meaning. A useful filename should communicate both sequence and content.
Verify boundaries
After merging, inspect the transition between each source file. The last page of one section should be followed by the correct first page of the next section.
For a large packet, compare the final page count with the sum of the original page counts. That quick arithmetic check can reveal a missing or duplicated source file.
Audit a six-page packet by its boundary labels
Use the existing Lab inputs merge-a.pdf (A1–A2), merge-b.pdf (B1–B3) and merge-c.pdf (C1). The expected sequence is A1, A2, B1, B2, B3, C1. This is a page-order task; a six-page result alone does not prove the order is correct.
Numbered filenames make your plan readable, but Pageivo does not sort the files by those names. The Selected files list is the authoritative order. A multi-select picker can return a different sequence from the one you clicked.
| Boundary | Positions in merged PDF | Expected labels |
|---|---|---|
| Start | 1 | A1 |
| A → B | 2 → 3 | A2 → B1 |
| B → C | 5 → 6 | B3 → C1 |
Fix a wrong sequence without repeated rasterization
Reordering can repair a known output sequence, but rebuilding from the original sources is easier to audit. Keep a short source-to-output map alongside large packets so insertions do not silently move an appendix or signature page.
- Load Try a sample to see the intended order.
- For your files, add each source separately in the planned order.
- If the list is wrong, use Clear all and add it again; there is no drag reorder control.
- Inspect each boundary in the download, then confirm all six pages.
Use the related Pageivo tool
Combine multiple PDFs into one clean document. The operation runs in your browser and does not require an account.