View a PDF's page boxes
For each page of a PDF, display the four rectangles that define its geometry: MediaBox (physical sheet), CropBox (displayed area), BleedBox (bleed) and TrimBox (final size after trimming) — essential before sending a file to the printer.
How it works
The PDF format lets you define up to five nested page boxes (we show four, the most useful for printing). The MediaBox is the size of the virtual sheet; the CropBox delimits what viewers actually display; the BleedBox defines the bleed area (content that deliberately extends beyond the final size to avoid white edges after cutting); the TrimBox is the exact final size after trimming. The tool reads these four rectangles directly from each page's dictionary and displays them in millimeters.
What does a dash (—) in the table mean?
It means the corresponding box isn't explicitly defined for that page. That's normal: only the MediaBox is mandatory in a PDF. The CropBox, BleedBox and TrimBox are generally present only in PDFs prepared specifically for professional printing (InDesign exports, Illustrator files with bleed).
Why are the BleedBox and TrimBox missing from most office PDFs?
A PDF exported from Word, Google Docs or a browser almost never defines a bleed or a trim size: these concepts apply to high-volume professional printing (flyers, magazines, packaging), not office printing. If you're preparing a file for a professional printer, check these boxes in your layout software before exporting.
100% local analysis in your browser: your PDF is never sent to a server.