The Ultimate Diff Checker for Code and Text

In modern development, QA, and business analysis, tracking down exactly what changed between two versions of a document or codebase is critical. Our Diff Checker makes it incredibly simple to compare two blocks of text side-by-side to pinpoint exactly what was added, removed, or modified.

Multiple Comparison Modes

Depending on your data, a line-by-line comparison might not be enough. The Diff Checker allows you to seamlessly switch between three different modes: Lines, Words, and Characters. Whether you are comparing long paragraphs of text, reviewing minified code, or looking for subtle spelling differences in JSON payloads, you can choose the granularity that works best for you.

Instant, Client-Side Processing

Just like all the tools in the Business Analyst Toolbox, the Diff Checker processes everything locally within your browser. There are no server round-trips, meaning your diffs are calculated instantly—and more importantly, your proprietary code or sensitive data never leaves your machine.