# Difft

> difft — structural syntax-aware diff tool comparing code by AST

- Skill: `javimosch/difft` (Agent Skill)
- Install (CLI): `npx skillmds@latest add javimosch/difft`
- Raw SKILL.md: https://api.skillmd.com/api/skills/javimosch/difft/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: javimosch (https://skillmd.com/u/javimosch)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/javimosch/difft

---

# difft Plugin

Difftastic is a syntax-aware diff tool that compares code by AST rather than line-by-line, producing clearer diffs across 30+ languages.

## Quickstart

```bash
# Compare two files
difft old.js new.js

# Side-by-side display
difft --display side-by-side old.py new.py

# Compare entire directories
difft dir1/ dir2/

# Inline display mode
difft --display inline old.rs new.rs

# Ignore comments when diffing
difft --ignore-comments old.java new.java
```