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Local PDF diagnostics

Inspect every PDF page size before it causes a layout problem

Choose one flat PDF to read each page’s physical dimensions, page boxes, orientation, and rotation locally. The report highlights mixed paper sizes without changing your source document.

Choose your local files.

Choose files to load the local PDF workspace. Nothing is uploaded or stored by Aftermath.

The local PDF workspace loads after you choose a file.

Inspect or correct PDF properties locally

Choose one flat PDF to inspect its page geometry, normalize a separate copy to A4 or Letter, review common document metadata, or flag probably blank pages before you explicitly remove them from a new download. JavaScript activates the local diagnostic workspace on this page.

Read the page geometry that actually exists

The inspector reports every page’s MediaBox and CropBox in PDF points, inches, and millimetres, plus its rotation and closest common paper size. It can identify a document that mixes A4, Letter, portrait, and landscape pages before an upload or print workflow exposes the inconsistency.

A size report does not alter content

Inspection is read-only. It does not crop, scale, or rewrite the PDF. Use the A4/Letter normalizer only after reviewing what should happen to existing content on a differently sized page.

Questions people ask

What is the difference between MediaBox and CropBox?

MediaBox describes the physical page boundary; CropBox can define the visible area used by a viewer or printer. A PDF can have both values, so the inspector shows them separately when they differ.

Can the inspector find mixed page sizes?

Yes. It lists every page and calls out the closest paper size and orientation, making mixed A4, Letter, portrait, and landscape pages visible.

Is my PDF uploaded to inspect it?

No. The page geometry is read in the current browser tab. Aftermath has no server-side PDF inspection job.

What this tool checks

Inspect a local PDF page by page when you need MediaBox, CropBox, visible dimensions, orientation, rotation, and mixed-paper-profile information before editing or submitting it. This route reports document geometry without rewriting the source or creating a replacement. Use the normalizer only when you deliberately want a separate A4 or Letter copy.

What to choose and what you get

What to choose

  • one readable flat PDF for page-geometry inspection

Result

  • a page-by-page PDF geometry report with page boxes, rotation, and mixed-profile status

Supported use

  • MediaBox and CropBox dimensions, offsets, orientation, and rotation
  • Closest common paper-size labels and mixed page-profile detection

Before you start

  • No PDF is created, modified, cropped, scaled, or normalized.
  • Encrypted, interactive-form, signed, malformed, or over-limit PDFs are rejected by the shared diagnostic loader.

Supported formats

  • Accepted formats: PDF.
  • Output formats: HTML report.

Browser support and permissions

  • Modern browser with JavaScript; flat PDF features, page limits, and available browser memory apply.
  • No camera, microphone, or screen permission is needed.

Choose the right settings

  • Use this route when the question is what page geometry the PDF currently contains.
  • Use /normalize-pdf-to-a4 only after deciding how existing content should fit a new paper size.
  • Use merge, split, edit, metadata, or blank-page routes for their separate document tasks.

Worked example

A PDF mixes portrait A4 pages with a rotated landscape page and needs a page-by-page geometry report.

Starting facts

  • The document is inspected without rewriting it.
  • MediaBox, CropBox and rotation can describe different visible geometry.

Observed operation: Read each supported page box, rotation and calculated visible size, then flag mixed profiles in the local report.

Review the result: Use the page list to choose whether normalization is needed and keep the source for comparison.

Boundary: Geometry inspection does not prove print output, accessibility, signature validity or complete support for every PDF feature.

What you can do

Inspect every PDF page box, visible size, orientation, and rotation

Choose another tool when

  • This is a read-only diagnostic and does not create a replacement PDF.
  • It does not normalize, crop, scale, merge, split, edit, or remove pages.

If it does not work

  • The PDF is encrypted, malformed, signed, or contains interactive form data.
  • A page reports invalid geometry or the document exceeds the diagnostic limits.
  • The current browser cannot parse the selected PDF.

Things to know

  • Closest paper-size labels describe geometry; they do not guarantee print or submission acceptance.
  • The report is read-only and does not fix mixed page sizes.
  • Visible size follows CropBox and page rotation as interpreted by the bundled diagnostic.

Privacy boundary

Selected PDF bytes stay in the current browser session and are not sent to an Aftermath processing service. How local processing is verified.

What this tool verifies

Checks the displayed limits and reports or creates a page-by-page PDF geometry report with page boxes, rotation, and mixed-profile status from one readable flat PDF for page-geometry inspection.

Check before sharing

This is a read-only diagnostic and does not create a replacement PDF.

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