Diff & Compare Tools

Working out what changed between two versions is a daily task | a reworded contract clause, an edited config, a spreadsheet export that no longer reconciles, a redesigned screenshot. These tools compare the two versions and show the difference precisely, line by line, cell by cell and pixel by pixel.

Compare plain text and code with word-level highlighting, diff JSON semantically so key order and formatting don't create noise, swipe between two images or blend them to spot a pixel change, reconcile Excel and CSV files down to the individual cell, or see exactly which words changed between two PDF or Word documents. Unlike most online diff checkers, every tool here runs entirely in your browser | your text, spreadsheets and documents are never uploaded | so they are safe for contracts, credentials and confidential data. IT leaders, engineers, analysts and legal teams use them for code review, change control, QA, due diligence and contract redlines.