oktools

Developer Tools

19 tools to help you build, debug, and ship faster.

Security(4)

Password Generator

Generate strong random passwords.

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes.

JWT Decoder

Decode and inspect JSON Web Tokens.

SSL Certificate & CSR Decoder

Decode X.509 certificates, chains and CSRs.

Data(5)

JSON Formatter & Validator

Format and validate JSON.

JSON Compare (Diff)

Compare two JSON documents.

Regex Tester & Explainer

Test regular expressions and see what they do.

Cron Expression Parser

Decode cron expressions and preview run times.

Text Diff & Compare

Compare two texts line by line.

Converters(6)

Base64 Encoder/Decoder

Encode and decode Base64 text/files.

URL Encoder/Decoder

Encode URLs and query parameters.

Unix Timestamp Converter

Convert Unix timestamps to readable dates.

CSV ↔ JSON Converter

Convert between CSV and JSON.

Number Base Converter

Convert binary, octal, decimal and hex.

Color Converter & Contrast Checker

Convert HEX, RGB, HSL, OKLCH and check WCAG contrast.

Generators(4)

Credit Card Number Generator (test numbers only)

Generate valid-format test card numbers (non-functional).

UUID Generator

Generate UUID/GUID values.

SSN Generator

Generate fake Social Security Numbers with names.

Lorem Ipsum Generator

Generate placeholder text.