Markdown Cleaner
Turn AI Markdown into clean, publish-ready text without breaking the actual content.
Useful tools.
Zero friction.
Small utilities that solve one concrete problem immediately. Free to use, designed to be genuinely useful and connected to the projects I build.
KAI AI Text Cleaner
Detect and remove hidden Unicode, zero-width characters, unusual spaces, unwanted Markdown, tracking parameters and copy/paste formatting. Includes an inspector and before/after diff.
- Unicode inspector
- Safe / Normal / Aggressive
- Tracking URL cleaner
- Local processing
JSON Fixer
Repair malformed JSON and show exactly what was wrong.
LLMs.txt Generator
Generate a clean llms.txt file for your website.
Why free tools?
Useful free tools create a low-friction way to discover my work. Each tool stands on its own, while the complete collection builds a practical ecosystem around AI, software, SEO and AEO.