Developer Tools
Encode, decode, format, and inspect data with browser-based developer utilities. Format JSON, encode Base64, test regex, generate UUIDs, decode JWTs, convert CSV to JSON — no installation required.
Base64 Encode / Decode
Encode strings to Base64 or decode Base64 back to text.
Open tool →URL Encoder / Decoder
Encode or decode URL-safe strings instantly.
Open tool →JSON Formatter
Prettify, minify and validate JSON data.
Open tool →Hash Generator
SHA-1, SHA-256 and SHA-512 — runs entirely in your browser.
Open tool →Regex Tester
Live regex matching with match highlights and groups.
Open tool →UUID Generator
Generate cryptographically random v4 UUIDs.
Open tool →JWT Decoder
Decode and inspect a JSON Web Token header and payload.
Open tool →CSV to JSON
Convert CSV data to a formatted JSON array.
Open tool →JSON to CSV
Convert a JSON array to CSV format.
Open tool →Frequently Asked Questions
Does any developer tool send my data to a server?
No. All encoding, decoding, hashing, and formatting runs entirely in your browser. This is especially important for JWT and hash operations involving sensitive data.
Which tool should I use to validate and format JSON?
JSON Formatter — paste raw JSON, click Format, and get a properly indented, validated result with syntax error highlighting.
What hash algorithms are available?
MD5, SHA-1, SHA-256, and SHA-512. All hashing uses the browser's native Web Crypto API and runs entirely client-side.
Can I test multi-line regex patterns?
Yes. The Regex Tester supports all standard JavaScript flags including multiline (m), dotAll (s), and Unicode (u).