Developer Tools
Format, validate, encode, and transform data. All tools are free, no signup required.
JSON Formatter
Format, validate, and beautify JSON data
Base64 Encoder
Encode and decode Base64 strings and files
URL Encoder
Encode and decode URL components
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512, SHA-3, BLAKE3, and 25+ other cryptographic hashes instantly
Regex Tester
Test and debug regular expressions with live matching
Color Converter
Convert between HEX, RGB, HSL, and other color formats
Epoch Converter
Convert Unix timestamps to human-readable dates and back with live clock, timezone support, and ISO 8601 formatting
HMAC Generator
Generate HMAC-SHA256, HMAC-SHA512, HMAC-MD5, KMAC, and other keyed-hash authentication codes
Random String Generator
Generate cryptographically secure random strings, numbers, passwords, and tokens
Encrypt / Decrypt
Encrypt and decrypt data with AES, DES, Triple DES, and RC4 symmetric ciphers
What are developer tools?
Developer tools are utilities for formatting, encoding, converting, and testing data. They cover common programming tasks such as formatting JSON, encoding Base64, generating cryptographic hashes, testing regular expressions, converting colors, and encrypting data — all running locally in your browser.
Frequently asked questions
Are the developer tools free?
Yes. All developer tools on Utilavo are completely free. No account, no signup, and no usage limits.
Is my data sent to a server?
No. All developer tools — JSON formatting, Base64 encoding, URL encoding, hashing, HMAC generation, regex testing, color conversion, and encryption — run entirely in your browser. Your data is never transmitted.
What developer utilities are available?
Available tools include JSON Formatter, Base64 Encoder, URL Encoder, Hash Generator, Regex Tester, Color Converter, Epoch Converter, HMAC Generator, and AES/DES/Triple DES/RC4 Encrypt-Decrypt.
Do I need an account to use developer tools?
No. All tools work immediately without creating an account, logging in, or installing any software.