Find differences between two texts — side by side or inline
Text comparison is essential for developers reviewing code changes, editors tracking document revisions, legal professionals comparing contract versions, and students checking essay drafts. This tool uses a line-by-line diff algorithm to identify insertions, deletions, and modifications between two texts. Unlike simple character comparison, it understands the structure of your text and highlights meaningful changes. Options to ignore whitespace and case sensitivity give you control over what counts as a "difference". The comparison runs entirely in your browser — your texts are never uploaded or stored. Perfect for comparing configuration files, API responses, database exports, or any two pieces of text where you need to spot what changed.
Green lines are additions (only in the modified text). Red lines are deletions (only in the original). Lines that appear in both texts but with changes are shown with inline highlighting of the specific changes.
Yes — it works well for comparing code snippets, config files, SQL queries, or any structured text. The monospace output preserves formatting so you can see exactly where changes occur.
Enable this when comparing code that may have different indentation styles, or documents that were reformatted. It treats lines as identical even if spacing differs, focusing only on meaningful content changes.
It uses a similar algorithm (LCS-based diff), but Git diff operates on files in a repository with additional context like line numbers and commit history. This tool is for quick, ad-hoc comparisons without needing Git.
The tool handles texts up to several thousand lines comfortably. For very large files (10,000+ lines), performance may decrease as the diff algorithm complexity increases. Consider splitting large comparisons into sections.