PDF Compass started as a working spreadsheet — a way to keep track of which PDF tools actually did what they claimed, after one too many "free" editors turned out to require a subscription at the export step. We turned that spreadsheet into a site so other people could skip the trial-and-error.
Every tool reviewed on this site is installed and used directly — we don't rank software based on press releases or marketing pages alone. Our process is the same for each tool:
Each tool is installed fresh on both Windows and macOS, using the same mid-range laptop specs to keep performance comparisons fair.
We use an identical batch of files — a scanned contract, a multi-column report, a spreadsheet export, and a form with fillable fields — across every tool.
Where we cite ratings, they reflect aggregate scores publicly available on review platforms at the time of writing, not numbers we generate ourselves.
PDF Compass earns a commission on some of the links in our guides and comparison tables. We're upfront about that because it's the only way a disclosure is worth anything — buried or vague disclosures don't actually tell you anything useful.
Affiliate relationships do not determine our rankings, scores, or which tool we call "best" for a given use case. A tool's position in our comparisons reflects what we found when testing it, not which links pay more per click. If a free or non-affiliate tool is the better fit for a task, that's what we recommend.