Dev Hub

JWT Decoder & Inspector

Decode and inspect JWT tokens — header, payload, claims at a glance

JWT Encoder

Create and sign JWT tokens with custom claims and headers

UUID / GUID Generator

Generate UUID v4, v1, and bulk UUIDs — cryptographically secure

Random Password Generator

Generate strong, cryptographically secure passwords — customizable length and charset

Random String Generator

Generate random strings, API keys, and tokens — custom length and charset

Unix Timestamp Converter

Convert Unix timestamps to dates and dates to timestamps — with timezone support

Cron Expression Generator

Build and validate cron expressions visually — no syntax memorization needed

Cron Expression Explainer

Understand any cron expression in plain English — with next run times

HTTP Header Parser

Parse and analyze raw HTTP request or response headers

Regex Tester

Test and debug regular expressions in real-time — with match highlighting

Lorem Ipsum Generator

Generate lorem ipsum placeholder text — by word, sentence, or paragraph count

SQL Formatter

Format and beautify SQL queries — supports MySQL, PostgreSQL, SQLite

Markdown Previewer

Preview markdown in real-time — GitHub-flavored Markdown support

Text Diff Checker

Compare two text blocks and highlight differences line by line

Word & Character Counter

Count words, characters, sentences, and estimate reading time

IP Address Tools

Subnet calculator, CIDR converter, and IPv4/IPv6 address analysis

Gzip Compress / Decompress

Compress or decompress text with Gzip — shows compression ratio

ASCII Table

Complete ASCII reference chart — decimal, hex, octal, binary, and descriptions

Bit / Byte Calculator

Convert between bits, bytes, KB, MB, GB, TB — SI and IEC units

DNS Lookup

Query DNS records (A, AAAA, MX, NS, TXT, SOA) via Google DNS-over-HTTPS

Epoch Converter

Convert Unix timestamps to dates and back — live clock, auto-detect s/ms