About this utility
How to use PDF Visual & Structural Comparison
Compare two PDFs page by page using isolated drawing-program fingerprints, geometry, page counts, and document metadata.
What to provide
Drop the baseline PDF. It is read locally and never opened in a blocked browser frame.
Drop the revised PDF to compare page programs and geometry.
- Choose or drag the local file into the clearly labeled drop area.
- Place the second value or file in the adjacent panel. Sensitive fields are masked by default.
- Review the input and the clearly labeled output behavior.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
Use “Swap inputs” to reverse the comparison without copying either value.
What the result means
A page-by-page same, changed, added, or removed report with compact fingerprints.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- Everything is processed in this browser tab. Input, filenames, keys, and output are never uploaded or saved. Page-program fingerprints are strong structural evidence but are not a color-managed raster proof for regulated print review.
Try the included example
Select “Load example” at any time to restore this tested sample.
(choose a local file)(leave empty)