Current status
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Local reorder {{ pdfLibReady ? 'Local PDF engine' : 'PDF engine loads on demand' }} {{ pageBadge }} {{ sourceSizeLabel }}
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Browse or drop one PDF. Extra files are ignored so the page order has one clear source.
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Ignored {{ ignoredCount }} extra file(s). This reorderer handles one PDF at a time.
Examples: all, reverse, 1, 3, 2, 4-6, 9-7, odd, or even.
Quick order
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Page sequence:
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Output page Source page Token Controls
{{ row.outputPage }} {{ row.sourcePage }} {{ row.token }}
Name the reordered document before downloading it.
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Leave typed order on when repeated pages are intentional.
Choose how document info fields are written into the reordered PDF.
Accepted range: 1-500 output pages per reorder.
pages
Field Value Copy
{{ row.field }} {{ row.value }}
Output page Source page Order token Mode Source file Copy
Load a PDF and enter a valid page order to preview the reorder manifest.
{{ row.outputPage }} {{ row.sourcePage }} {{ row.token }} {{ row.mode }} {{ row.sourceFile }}
Check Status Detail Copy
{{ row.check }} {{ row.status }} {{ row.detail }}
Tags: File Tools, Productivity
PDF Page Numberer Add page numbers to a PDF in your browser, choose ranges and label styles, then check placement coordinates before downloading.
PDF Compressor Compress a PDF in your browser with a local rewrite, production-size estimates, and warnings for image-heavy, encrypted, or oversized files.
PDF Page Deleter Delete PDF pages in your browser, verify source-to-output renumbering, catch range or fidelity warnings, and download a cleaned copy.
PDF Page Extractor Extract selected pages from a PDF in your browser, preserve typed order or remove repeats, and verify the new file with a manifest.
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Printed page numbers are not enough to prove that a PDF is in the right order. A scanner can feed a stack backward, an appendix can land before the section that cites it, and a cover sheet may need to repeat before several exhibits. Reordering is a structural edit: it changes which source page is copied into each output position while leaving the visible artwork on those pages mostly unchanged.

That distinction prevents many mistakes. A PDF can have file positions, printed numbers drawn on the page, optional page labels shown by a reader, bookmarks, links, form fields, and accessibility tags. Moving source page 7 before source page 3 changes the reading order, but it does not redraw the number on either page, rewrite a table of contents, or prove that cross-references still make sense.

Term What it means Common mistake
Source page The page position in the original PDF, counted from 1 at the start of the file. Assuming source page 1 must show a printed number 1.
Printed page number Text or artwork already drawn on the page, such as ii, A-3, or 12. Expecting reordering to redraw visible page numbers.
Page label A navigation label that a PDF reader may show instead of the simple file position. Confusing reader labels with the actual output sequence.
Output page The new page position after selected source pages are copied into a rebuilt PDF. Forgetting to check whether repeated or omitted pages were intentional.
Source PDF page positions copied into a new output sequence

Page reordering is most useful when the file already contains the pages you need and the problem is order, repetition, or omission. It is weaker when the PDF needs optical character recognition, rotation, page-label changes, bookmark repair, signature preservation, form rebuilding, or accessibility remediation. Signed and form-heavy documents deserve extra review because copying pages into a new file can change assumptions that other software relies on.

Good reordering work leaves two records: the intended sequence and an output-to-source manifest. The manifest matters when front matter uses roman numerals, appendices use lettered page numbers, or a document packet repeats standard instructions before multiple sections.

How to Use This Tool:

Load one PDF, describe the target sequence, inspect the expanded page rows, and download the rebuilt file only after the manifest matches the document you meant to create.

  1. Choose PDF file, drop one PDF into the upload area, or select Load sample. The summary should change from Choose a PDF to the source page count and file size. Extra dropped files are ignored so the sequence has one clear source.
  2. Fill New page order with page numbers, comma-separated selectors, closed ranges such as 4-6, reverse ranges such as 9-7, open ranges such as 4- or -3, or keywords such as all, reverse, odd, even, first, and last.
  3. Use All, Reverse, Odd, or Even after the PDF loads when a preset is safer than typing a long selector. These shortcuts expand against the current source page count.
  4. Review Page sequence. Move rows up or down, duplicate a row, or remove a row when editing the visible sequence is clearer than editing the text field. Row edits rewrite New page order as an explicit list.
  5. Open Advanced when repeated pages need a policy. Typed order, allow duplicates keeps repeated source pages, Typed order, keep first occurrence only removes later repeats, and Ascending unique pages removes repeats before sorting the selected source pages.
  6. Set Output filename, then check the action label. If it says Order needs review or Page guard exceeded, fix the selector or raise Page guard up to the 500-page maximum before running the reorder.
  7. Click Reorder PDF. Use Reordered PDF for the generated document, Page Order Manifest to verify output-to-source mapping, and Reorder Checks to review source, guard, duplicate, metadata, and output readiness checks.

Interpreting Results:

Output pages is the first sanity check. It should equal the final expanded sequence after duplicate handling is applied. A six-page source with 1, 3, 2, 4-6 should produce 6 output pages. The same source with odd should produce 3 output pages.

Repeated source pages needs judgment rather than automatic correction. A repeated cover page can be intentional; a repeated evidence page in a filing packet may be accidental. Compare the warning with Page Order Manifest, because the manifest shows every output page beside the source page and selector token that produced it.

  • Reorder Checks can confirm that the source loaded, the order is valid, the file is under the 150 MB browser memory cap, and the output has been generated.
  • A ready result does not prove that signatures, bookmarks, forms, attachments, printed page numbers, links, or accessibility reading order are still correct.
  • Open the downloaded PDF before sharing it. Check the first page, last page, section breaks, repeated pages, omitted ranges, and any page whose visible number differs from its source position.

Technical Details:

PDF page organization is built around page objects referenced by the document's page tree. A reorder operation copies selected source pages into a new sequence; it does not normally rewrite the visible marks already drawn on those pages.

Selectors are resolved against the loaded source page count. User-facing PDF page positions are one-based, so page 1 means the first file position in the source. Each selector must expand to one or more valid source positions before a new PDF can be generated.

Transformation Core:

Selector Expansion rule Six-page source example
all Copy every source page in normal source order. 1, 2, 3, 4, 5, 6
reverse Copy every source page from the last page back to the first page. 6, 5, 4, 3, 2, 1
odd or even Copy source positions with odd or even file-position numbers. 1, 3, 5 or 2, 4, 6
first or last Copy only the first or last source page. 1 or 6
2-5 or 5-2 Expand an ascending or descending closed range. 2, 3, 4, 5 or 5, 4, 3, 2
4- or -3 Use the source boundary for the missing range endpoint. 4, 5, 6 or 1, 2, 3
1, 3, 3, 2 Keep or remove repeated source pages according to duplicate handling. 1, 3, 3, 2 or 1, 3, 2

The final sequence is the selected page list after duplicate handling. Typed order preserves the selected sequence exactly. First-occurrence mode keeps the earliest appearance of each source page and drops later repeats. Ascending unique mode removes repeats and sorts the remaining source pages from low to high.

Duplicate handling Input 1, 3, 3, 2 Final sequence
Typed order, allow duplicates Four raw selections with one repeated source page. 1, 3, 3, 2
Typed order, keep first occurrence only The second source page 3 selection is removed. 1, 3, 2
Ascending unique pages Unique source pages are sorted after repeats are removed. 1, 2, 3

Formula Core:

Output count and repeated-page warnings come from the expanded selection, not from printed page numbers or reader labels.

OutputPages = | FinalSequence |
RepeatedSelections = RawSelections - UniqueSourcePages
1 ≤ OutputPages ≤ PageGuard ≤ 500

For 1, 3, 3, 2, raw selections are 4 and unique source pages are 3, so Repeated source pages reports one repeated selection. In typed order, Output pages is 4. In first-occurrence mode, Output pages becomes 3 because the repeated source page is removed before the PDF is built.

Validation Rules:

Check Pass condition Correction when it fails
Source PDF One readable PDF, PDF header present, not encrypted, with at least one page. Choose another PDF or save an unencrypted copy from a PDF editor.
File size The selected source is at or below 150 MB. Split, compress, or reduce the file before reordering in the browser.
Page order Every token resolves to a source page from 1 through the source page count. Remove unknown tokens, empty ranges such as -, and out-of-range pages.
Page guard The final sequence has at least 1 output page and no more pages than the selected guard. Use a smaller range or raise Page guard up to 500 pages.
Output metadata The rebuilt PDF uses neutral document information or a title based on the source filename. Check document properties in a PDF reader if title fields matter downstream.

Privacy Notes:

The selected PDF is read in the current browser session and copied into a new PDF locally. The page may need to load PDF-processing code before work starts, but the selected document is not uploaded by the reorder action. Large files can still use significant memory because the source and rebuilt PDF may both exist in the tab during generation.

Worked Examples:

A six-page scan has pages 2 and 3 reversed. Enter 1, 3, 2, 4-6. Page sequence should show output page 2 coming from source page 3 and output page 3 coming from source page 2. Output pages should read 6.

A 12-page review packet needs the cover repeated before the appendix. Enter 1, 2-10, 1, 11-12 and leave duplicate handling on Typed order, allow duplicates. Repeated source pages should report one repeated selection, and Page Order Manifest should show source page 1 at two output positions.

A 240-page archive is blocked by Page guard exceeded after entering all with a 100-page guard. Use Page guard to allow 240 pages, or narrow New page order to a smaller range such as 1-80. Reorder Checks should move the guard check back inside the cap before Reorder PDF is enabled.

A file opens with front matter labeled i, ii, and iii before page 1 of the main document. If you enter 1-3, the output contains the first three file positions, not the pages visibly labeled 1 through 3. Use the manifest and a PDF reader to confirm visible numbers when labels and source positions differ.

FAQ:

Can the same source page appear more than once?

Yes. Use Typed order, allow duplicates when repeated pages are intentional. Choose one of the unique modes when repeated source pages should be removed before the PDF is generated.

Why is Reorder PDF disabled?

The source may be missing, encrypted, too large, invalid, outside the page guard, or the page order may contain an unknown token or out-of-range page number. Read the action label and Reorder Checks for the first correction.

Does page 1 mean the printed page number 1?

No. Page selectors use source file positions counted from the start of the PDF. Printed numbers and reader page labels can differ, especially when a document has a cover, table of contents, appendix, or chapter prefixes.

Does this preserve signatures, forms, and bookmarks?

Do not assume that signatures, form behavior, bookmarks, attachments, page labels, or accessibility tags remain valid after pages are copied into a rebuilt PDF. Review formal documents in a PDF reader or production system.

Can scanned PDFs be reordered?

Yes, if the scan is an unencrypted PDF within the file-size and page-guard limits. Reordering copies pages; it does not run optical character recognition, deskew crooked scans, rotate pages, or improve image quality.

Glossary:

Source page
A page position in the original PDF, counted from 1 at the start of the file.
Output page
A page position in the rebuilt PDF after the final sequence is applied.
Page order
The typed selector expression that expands into source pages, ranges, and keywords.
Duplicate handling
The rule that decides whether repeated source pages stay in the output or are removed.
Page guard
The maximum number of output pages allowed for one browser reorder run.
Page Order Manifest
The audit table that maps every output page to its source page and selector token.
Page label
A PDF reader navigation label that may differ from the file position and printed number.

References: