All Online Tools
90 free tools, grouped by category. Open and use — no signup needed.
Document Tools12
Conversion Tools18
- ASCII / Hex Converter
- Base64 Encode/Decode
- Excel to PDF Converter
- File Converter Suite
- HTML Entity Encoder
- HTML to Markdown
- HTML to PDF Converter
- Image to Base64
- Markdown to PDF Converter
- Merge PDF
- Number Base Converter
- PDF to JPG Converter
- PDF to PNG Converter
- PPT to PDF Converter
- Text Case Converter
- Unicode Converter
- URL Encoder/Decoder
- Word to PDF Converter
Developer Tools19
- Config File Hosting
- Cron Expression Parser & Builder
- CSS Generator
- Hash Generator
- JS / CSS Formatter
- JSON ↔ CSV Converter
- JSON Formatter
- JWT Decoder
- LLM API Pricing Calculator
- LLM Model Deprecation & EOL Tracker
- LLM VRAM Calculator
- MCP Config Generator & Validator
- Number Formatter
- Online Whiteboard
- Regex Tester
- SQL Formatter
- Timestamp Converter
- UUID Generator
- YAML ↔ JSON Converter
Utility Tools21
- Age Calculator
- AI Watermark Checker
- Aspect Ratio Calculator
- BMI Calculator
- Business Days Calculator
- Calculator
- Calorie Calculator
- Color Picker
- Countdown Timer
- Currency Converter
- Email Extractor
- Five Elements (Wuxing) Analysis
- Loan Calculator
- Online Stopwatch
- Password Generator
- Percentage & Tip Calculator
- Pomodoro Timer
- QR Code Tool
- Random Number Generator
- Timezone Converter
- Unit Converter
Media Tools7
SEO Tools11
Network Tools2
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