54 lines
2.5 KiB
Markdown
54 lines
2.5 KiB
Markdown
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---
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title: Page Dimensions
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description: Analyze PDF page sizes, orientations, aspect ratios, and rotation. Detect mixed-size documents and export data to CSV.
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---
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# Page Dimensions
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A diagnostic tool that reads every page in your PDF and reports its exact dimensions, orientation, standard size name, aspect ratio, area, and rotation. Useful for catching mixed-size pages before printing or for documenting the properties of a PDF you received.
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## How It Works
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1. Upload a PDF file. Analysis starts automatically -- no button to press.
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2. A summary panel shows total pages, number of unique page sizes, and whether the document has mixed sizes.
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3. Browse the full results table with per-page details.
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4. Switch display units between Points, Inches, Millimeters, or Pixels.
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5. Click **Export to CSV** to save the data.
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## Reported Fields
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| Column | Description |
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| ------------- | ------------------------------------------- |
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| Page # | Sequential page number |
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| Dimensions | Width x Height in the selected unit |
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| Standard Size | Matched name (A4, Letter, etc.) or "Custom" |
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| Orientation | Portrait or Landscape |
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| Aspect Ratio | Width-to-height ratio as a decimal |
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| Area | Page area in the selected unit squared |
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| Rotation | Page rotation in degrees |
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## Features
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- Automatic detection of standard paper sizes (A3, A4, A5, Letter, Legal, Tabloid, and more)
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- Mixed-size document warning with a breakdown of which sizes appear and how many pages use each
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- Unit conversion between points, inches, millimeters, and pixels (at 96 PPI)
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- CSV export for use in spreadsheets or documentation systems
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## Use Cases
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- Verifying all pages are A4 before submitting a document to a print shop
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- Diagnosing why a merged PDF prints with unexpected margins on certain pages
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- Documenting the page layout of a large PDF archive for metadata records
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- Identifying rotated pages that need correction
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## Tips
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- If the summary shows "Mixed Sizes," use the Fix Page Size tool to standardize before printing.
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- The rotation field helps identify pages that display correctly but have a non-zero rotation attribute, which can cause issues in some workflows.
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## Related Tools
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- [Fix Page Size](./fix-page-size) -- standardize pages after identifying mixed sizes
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- [Compress PDF](./compress-pdf) -- optimize the PDF after fixing page issues
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- [Rotate PDF](./rotate-pdf) -- correct rotated pages
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