10 Essential Tools Every Developer Needs
· 7 min read
From JSON formatters to regex testers, discover the must-have browser tools that streamline your daily workflow.
Developers spend a surprising amount of time on small, repetitive tasks — formatting JSON, testing regex patterns, encoding URLs, generating UUIDs. The right browser tools eliminate this friction entirely.
1. JSON Formatter & Validator
Paste minified JSON and instantly get formatted, indented output with syntax highlighting. Validates structure, identifies errors, and calculates size.
2. Regex Tester
Test regular expressions against sample text in real-time. See all matches highlighted, capture groups broken out, and test across multiple strings simultaneously.
3. JWT Decoder
Decode JSON Web Tokens to inspect headers, payloads, and expiry times.
4. Hash Generator
Generate cryptographic hashes for verification, checksums, and security testing. All hashing runs in your browser using the Web Crypto API.
5. Base64 Encoder / Decoder
Encode and decode Base64 strings for API payloads, data URIs, and authentication headers.
6. URL Encoder / Decoder
Encode special characters for URLs or decode percent-encoded strings.
7. UUID Generator
Generate cryptographically secure UUIDs (v4) for database primary keys and session tokens.
8. Password Generator
Generate strong random passwords with configurable length and character sets.
Related tools
- JSON Formatter — Pretty-print and validate
- Regex Tester — Live match highlighting
- JWT Decoder — Inspect token payloads locally
- UUID Generator — Crypto-secure v4 IDs