10 Online Tools Every Backend Developer Needs
Essential online tools for backend developers - JSON utilities, SQL formatter, hash generator, JWT decoder, and more.
Essential Backend Developer Tools
Backend work means dealing with JSON APIs, databases, authentication tokens, and data transformation daily. These tools speed up the routine stuff.
1. JSON Formatter & Validator
The most-used backend tool. Paste the JSON from your API response and immediately see if it's valid and what's in it. JSON Formatter includes tree view.
2. JWT Decoder
When a JWT-authenticated request fails, the first step is inspecting the token. JWT Decoder shows the header, payload, and expiry instantly.
3. SQL Formatter
Clean up generated or minified SQL for readability. SQL Formatter supports MySQL, PostgreSQL, SQLite, and T-SQL.
4. Hash Generator
Quickly check what a hash should be, or verify a checksum. Hash Generator supports MD5, SHA-1, SHA-256, SHA-512.
5. Base64 Encode/Decode
For API auth headers, binary data handling, and configuration secrets. Base64 Tool also handles file uploads.
6. URL Encode/Decode
Debug mangled query strings and encoded URLs. URL Encoder/Decoder.
7. JSON to TypeScript
When working with API responses, auto-generate TypeScript interfaces with JSON to TypeScript.
8. Diff Checker
Compare config files, SQL schemas, or JSON responses between environments. Diff Checker.
9. Unix Timestamp Converter
Convert between timestamps and human-readable dates. Unix Timestamp Converter.
10. Cron Expression Generator
Write correct cron syntax the first time with Cron Expression Generator.