Professional online tools
Clear entry points, local computation, and full guides. Browse by category or jump into popular tools.
- Tools
- 154
- Categories
- 10
- Processing
- In-browser
Popular picks
Popular tools
High-traffic entry points, ready to use.
JWT Decoder
Parse JWT header, payload, signature, and expiry warnings
JSON Formatter
Format, minify, and validate JSON with clear syntax errors
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 text hashing with compare
Base64 Encoder/Decoder
Convert text and Base64 both ways with UTF-8 support
URL Encoder/Decoder
Percent-encoding for URLs and UTF-8 characters
Regex Tester
Test regex patterns, groups, and replace online
Token Estimator
Count chars, words, and estimate LLM tokens for prompts
UUID Generator
Batch UUID v4 generator with multiple formats
Browse by category
Each category includes guides and examples; tools run locally in your browser.
Cryptography
Hashing, JWT, UUID, and crypto utilities computed locally in your browser.
- JWT Decoder
- Hash Generator
- UUID Generator
- Bcrypt Tool
Development Tools
JSON and YAML formatting; regex and config tools running locally.
Web Tools
URL parsing, HTML entities, and web development helpers.
Converters
Base64, dates, encodings, and structured format conversion in the browser.
AI Tools
Token counts, prompt templates, RAG chunking, and LLM workflow utilities.
Text Tools
Text analysis, diff, transforms, and Lorem Ipsum generators.
Media Tools
QR codes and image utilities, processed on your device.
Math Tools
Calculators, random numbers, percentages, and everyday math utilities.
Measurement
Timers, world clock, and unit converters for length, weight, and temperature.
Network Tools
IPv4/IPv6 subnet tools, MAC lookup, and network planning utilities.