💻 Developer Tools Hub

Every dev tool you need, one tab away.

JSON, Base64, UUID, Hash, Regex, URL encoding — all in one place. Fast, private, no signin.

📦 JSON

🔒 Base64

🆔 UUID

🔨 Hash

⚙️ Regex

🔗 URL Encode

🔢 Number Base

🎫 JWT

🏷️ HTML Entities

🎭 CSS Minifier

✨ JS Beautifier

JSON Formatter & Validator

Format, validate, minify, compare and explore JSON. Supports files up to 10MB.

Format

Compare

Tree View

Query (jq-like)

Input JSON

📁 Load File

Output

Formatted output appears here…

Base64 Encoder / Decoder

Encode text or files to Base64, or decode Base64 strings. Supports URL-safe encoding.

Text Input

File → Base64

📁

Click or drop file here

Max 5MB · Any file type

Output

Result appears here…

UUID / GUID Generator

Generate cryptographically secure UUID v4s in bulk. Multiple formats supported.

Version

Count (1–1000)

Format

Hash Generator

Generate cryptographic hashes using SHA-256, SHA-512, SHA-1, and MD5-like (CRC32) algorithms.

Input Text

Lowercase HMAC

Verify Hash

SHA-256

—

SHA-512

—

SHA-1

—

CRC32

—

Regex Tester

Test and debug regular expressions in real time. Highlights matches, shows groups, counts results.

/ /

Quick patterns:

Test String

Replace

URL Encoder / Decoder

Encode or decode URL components. Supports encodeURI, encodeURIComponent, and full percent-encoding.

Input

Output

Result appears here…

Parse URL Parameters

Number Base Converter

Convert numbers between Binary, Octal, Decimal, and Hexadecimal. Supports large numbers.

Input Number

Binary (Base 2)

—

Octal (Base 8)

—

Decimal (Base 10)

—

Hexadecimal (Base 16)

—

Bit Representation (32-bit)

JWT Decoder

Decode and inspect JSON Web Tokens. View header, payload, and expiry status. Never transmits your token.

JWT Token

Header

—

Payload

—

Status

HTML Entity Converter

Encode or decode HTML entities. Handles all standard named entities and numeric references.

Input

Output

Result appears here…

Common Entity Reference

${[['&','&'],['<','<'],['>','>'],['"','"'],["'",'''],['©','©'],['®','®'],['™','™'],['€','€'],['£','£'],['¥','¥'],['→','→'],['←','←'],['↑','↑'],['↓','↓'],['•','•'],['…','…'],['—','—'],['–','–'],['×','×'],['÷','÷'],['±','±'],['≠','≠'],['≤','≤'],['≥','≥'],['∞','∞']] .map(([char,entity])=>`${char} = ${entity}`).join('')}

CSS Minifier & Beautifier

Minify CSS for production or beautify it for readability. Shows compression percentage.

CSS Input

📁 Load

Output

Minified/beautified CSS appears here…

JavaScript Beautifier & Minifier

Format minified JavaScript into readable, indented code — or strip it back down. Useful for reading a bundled script you did not write.

JavaScript Input

Indent

📁 Load

Output

Formatted JavaScript appears here…