Fix Page Size

PDFs assembled from multiple sources often end up with mismatched page sizes -- some Letter, some A4, some completely non-standard. This tool forces every page to a single target size, scaling content to fit or fill as needed.

How It Works

1. Upload a PDF file.
2. Select a Target Page Size from the dropdown (A4, Letter, Legal, A3, A5, Tabloid, or Custom).
3. Choose an Orientation -- Auto keeps each page's original orientation, or you can force Portrait or Landscape.
4. Pick a Content Scaling mode: Fit (preserves all content, may add margins) or Fill (fills the page, may crop edges).
5. Optionally set a Background Color for any added margins.
6. Click Fix Page Size.

Options

• Standard sizes: A4, Letter, Legal, A3, A5, Tabloid
• Custom dimensions: Enter width and height in inches or millimeters
• Orientation: Auto, Portrait, Landscape
• Scaling mode: Fit or Fill (Crop)
• Background color: Any color for margin padding

Use Cases

• Normalizing a merged PDF where pages came from different scanners
• Converting a US Letter document to A4 for international distribution
• Preparing print-ready PDFs that require a consistent trim size
• Fixing pages that are slightly off-standard (e.g., 8.49 x 11.02 inches instead of 8.5 x 11)

Tips

• Use Fit mode to guarantee no content is lost. Fill mode looks cleaner but can clip edges.
• Check your output with the Page Dimensions tool to confirm every page matches the target.
• White is the default background color; switch to a dark color if your document has dark margins.

Related Tools

• Page Dimensions -- inspect page sizes before and after fixing
• Compress PDF -- reduce file size after standardization
• Crop PDF -- manually crop pages instead of auto-scaling