DevRivet
Tools

Free developer tools that run in your browser

DevRivet has 10 fast, focused tools for everyday development work — formatting, encoding and decoding, hashing, testing and scheduling. No sign-up required, and your input is processed locally in your browser.

Encoding & Tokens

Base64 Encoder / Decoder

Encode and decode Base64 instantly in your browser.

URL Encoder / Decoder

Encode and decode URL/query-string components.

JWT Decoder

Decode a JWT's header and payload instantly.

Data & Formatting

SQL Formatter

Format and beautify SQL queries for popular SQL dialects.

JSON Formatter / Validator

Pretty-print, minify, and validate JSON instantly.

Testing

Regex Tester

Test JavaScript regular expressions with match highlighting and capture groups.

Identifiers & Hashing

UUID Generator

Generate secure UUID v4 and time-ordered UUID v7 identifiers.

Hash Generator

Generate SHA-256, SHA-384, SHA-512 and SHA-1 hashes.

Time & Automation

Cron Expression Generator

Build, understand and validate cron expressions.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates.