Aftermath File Fixer
On-device

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.

Illustration of private browser PDF tools
Illustration of private browser PDF tools
Inspect a PDF locally, choose an explicit change or review step, then download a separate copy only when you decide to.

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.

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