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2026-08-15 — The report says a page changed. The viewer is where you decide whether it matters — three panes, a wipe that follows the pointer, and a strip that opens on the pages that differ.
What is the difference between pdfl compare and pdfl pixelcompare?
Section titled “What is the difference between pdfl compare and pdfl pixelcompare?”2026-08-14 — Both take two PDFs and tell you what changed. They ask different questions, and they disagree more often than you would expect.
2026-08-14 — A reprint arrives and someone has to decide whether it is the file that was approved. Checking that by eye is slow, and it fails on exactly the changes that cost the most.
2026-08-14 — A PDF looks like one flat thing. PDFLang hands you five ways to reach inside it: the document, its pages, its fonts, its images, and areas you draw yourself.
2026-08-13 — A small language for writing down what a correct PDF looks like, and checking files against it.
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