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Local PDF page normalizer

Normalize a PDF to A4 or Letter with an explicit fit choice

Choose a target paper size and decide whether to scale with padding, scale with cropping, or change only the page canvas. Aftermath creates a separate local PDF so the source remains untouched.

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.

Choose the consequence instead of letting a converter guess

Scale with padding keeps all visible content and leaves margins. Scale with crop fills the target page but can trim edges. Change canvas only adjusts the page boundary without scaling content, which can leave content outside the visible target area. The workspace labels each result before export.

Review page geometry before normalizing

Open the page-size inspector when you need to understand a mixed document first. The normalizer is for flat, readable PDFs and intentionally rejects encrypted, signed, or interactive-form documents rather than creating an unsafe copy.

Questions people ask

Does normalizing to A4 make the content sharper?

No. It changes page geometry and may scale existing content. It cannot add detail to raster images or scanned text inside a PDF.

Which fit method should I choose?

Use padding to preserve every edge, crop when edge trimming is acceptable, and canvas-only only when you understand how a viewer or printer will handle content outside the new page boundary.

Will my original PDF be changed?

No. Aftermath downloads a separate normalized copy and leaves the selected source file unchanged.

How to use this tool

Create a separate A4 or Letter PDF from a readable flat source when you have chosen how each page should fit the new paper size. The preflight distinguishes proportional padding, proportional cropping, and canvas-only changes before download. Changing page geometry cannot preserve every unsupported PDF feature or prove acceptance by an external recipient.

What to choose and what you get

What to choose

  • one flat PDF plus an A4 or Letter target and the chosen pad, crop, or canvas method

Result

  • one separate normalized PDF using the selected paper size and fit consequence

Supported use

  • Proportional scaling with padding to preserve visible edges
  • Proportional scaling with cropping, or canvas-only page-boundary changes

Before you start

  • Normalization cannot create detail or guarantee downstream acceptance.
  • Encrypted, interactive-form, signed, malformed, or over-limit PDFs are rejected.

Supported formats

  • Accepted formats: PDF.
  • Output formats: PDF.

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

  • Inspect the source first when mixed page geometry is not understood.
  • Choose padding to preserve visible edges, cropping to fill the target, or canvas-only when scale must remain unchanged.
  • Review the generated copy before printing, sharing, or submission.

Worked example

A mixed-size flat PDF needs an A4 copy with small pages padded rather than stretched or silently cropped.

Starting facts

  • The desired paper size is A4.
  • The chosen fit method must be visible because it changes page appearance.

Observed operation: Create new A4 pages, apply the selected pad or crop consequence and place each supported source page on the new canvas.

Review the result: Reopen the result and inspect page size, orientation, margins, clipping and legibility on every page.

Boundary: Normalization changes page geometry and cannot safely preserve signed, encrypted, interactive or otherwise unsupported PDFs.

What you can do

Create a separate A4 or Letter PDF with an explicit fit method

Choose another tool when

  • This route does not merely inspect page sizes and does not add image detail.
  • It does not merge documents, extract page ranges, edit text, or rewrite protected and complex PDFs.

Next step: Choose a related route when the input, output, or required workflow is different.

If it does not work

  • The source is encrypted, malformed, signed, or contains interactive form data.
  • A page has invalid geometry or the document exceeds the diagnostic safety limits.
  • The browser cannot build or save the separate normalized PDF.

Things to know

  • Padding can add margins, cropping can trim edges, and canvas-only mode can clip content.
  • Content outside the visible source CropBox is excluded and rotated pages are made upright.
  • The new page geometry does not improve the detail of scans or embedded images.

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 one separate normalized PDF using the selected paper size and fit consequence from one flat PDF plus an A4 or Letter target and the chosen pad, crop, or canvas method.

Check before sharing

This route does not merely inspect page sizes and does not add image detail.

Result checks

Method and observed boundary

Read the worked example and result review

Checks represented by this receipt

  • local file boundary: verified
  • pdf output structure: verified

Limitation: Normalization changes page geometry and cannot safely preserve signed, encrypted, interactive or otherwise unsupported PDFs.

Tested 2026-09-01. Deterministic release regression; cross-browser compatibility is not asserted.

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