Developer Tools: practical guide
Use a formatter to make valid structured text easier to inspect, a validator or parser to find malformed input, and an encoder only when a receiving format requires it. Formatting changes whitespace; encoding changes representation. Decode only data you are authorized to inspect, and review output before using it in a production system.
Worked example
If a URL parameter contains `hello%20world`, URL decoding displays `hello world`; it does not make the text safe for HTML or SQL. A JSON formatter can indent a valid object, but it cannot infer the intended meaning of a misspelled field. Test transformed output in the system that will consume it.
What to check before relying on a result
Do not paste passwords, access tokens, private keys, customer records, or confidential code into network lookup tools. Most text utilities run locally, while IP, DNS, weather, currency, and market lookups contact external services; the privacy page identifies those requests. Encoded text is not encryption.
Tools in this category
- JSON Formatter & Validator
- Base64 Encoder & Decoder
- QR Code Generator
- Regex Tester
- CSV ⇄ JSON Converter
- Password Generator
- Markdown Preview
- IP Address Lookup
- JWT Decoder
- JSON ⇄ YAML Converter
- CSS Minifier & Beautifier
- URL Encoder & Decoder
- Hash Generator
- Cron Expression Parser
- DNS Lookup
- UUID Generator
- LaTeX Math Symbols Cheatsheet
- LaTeX Equation Editor
- Markdown Table Generator
- LaTeX Table Generator
- HTML Table Generator
- SQL Formatter
- Chmod Calculator
- XML Formatter
- Code Beautifier
- HTML Entity Encoder / Decoder
- JSONPath Tester
- String Escape / Unescape
- GZip Compressor