Delta transforms how you read code changes by combining syntax highlighting with intelligent word-level diff detection to show exactly what changed. Built in Rust for speed and reliability, it replaces git's default pager with a more readable alternative.

Key capabilities include:

Syntax highlighting using themes from bat, with automatic light/dark detection
Word-level change detection using Levenshtein algorithms to highlight precise edits within lines
Side-by-side view with automatic line wrapping for easier comparison
Line numbering to reference specific changes
Navigation shortcuts (n/N keys) to jump between files and diffs
Merge conflict display with improved zdiff3 formatting
Git blame integration with syntax highlighting and hyperlinks to hosting providers
Grep output highlighting for ripgrep, git grep, and standard grep
Hyperlinked commits that open directly in GitHub, GitLab, SourceHut, or Codeberg
Customizable styling for 20+ elements with color and font attributes
Copy-friendly output that removes diff markers for direct code copying

Configuration is straightforward—add delta as your git pager and customize appearance through .gitconfig. The tool handles traditional unified diff output alongside git's native format, making it compatible with existing workflows while offering extensive layout and styling options for those who want them.