diff-pdf
Compares two PDF files visually and writes out a PDF with the differences highlighted.
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2 more ways to get diff-pdf
Package managers
- Chocolatey
choco install diff-pdf - Homebrew
brew install diff-pdf
About diff-pdf
diff-pdf takes two PDFs and tells you whether they differ, returning 0 or 1 so it works in a script or a build check. With `--output-diff` it produces a PDF with the visual differences highlighted, and with `--view` it opens a simple window where you can page through both files and zoom in.
The viewer has one particularly useful trick: Ctrl and the arrow keys shift the two pages relative to each other, which makes it easy to tell a genuine content change from a page that has simply moved. Ctrl+1 and Ctrl+2 show the left and right documents, and Ctrl+D returns to the diff view.
The author states plainly that the repository is provided as-is and is not actively developed, and that support and feature requests should not be expected.
Strengths
- Returns an exit code, so it drops straight into a script or a build check
- Writes a PDF with the differences visually highlighted
- A viewer mode that can shift the two pages relative to each other to isolate real changes
- Precompiled Windows ZIP, Homebrew formula and a Fedora package
Limitations
- The author states it is provided as-is and is not actively developed
- No support or feature implementation should be expected
- It compares rendered pages, not text, so it cannot tell you what words changed
- The interface is minimal
Details
- Pricing
- Free · Free and open source under the GPL.
- License
- GPL-2.0
- Developer
- vslavik
- Platforms
- Windows, macOS, Linux, Command line
- How it runs
- Downloadable app
- Account
- Not required
- Works offline
- Yes
- Best suited for
- Checking whether a regenerated PDF actually differs from the previous one
- Categories
- PDF tools
- Last verified
- Added
- Provenance
- Selected from the TechWalrus downloads catalog (Office); facts checked against the developer's own pages, 3 sources on file.