100% Client-Side • Zero Backend CallsFast & Private

Developer & Security Toolbox

A high-speed suite of browser-native utilities for web engineering, cryptography, formatting, and design. Everything runs entirely in your browser with instant execution.

Hash Generator

Compute cryptographic hashes (MD5, SHA-1, SHA-256, SHA-384, SHA-512, HMAC) instantly using Web Crypto API.

JWT Inspector

Decode and inspect JSON Web Tokens (Header, Payload, claims, expiration) client-side without sending tokens anywhere.

Base64 Encoder / Decoder

Encode and decode text, files, and images to/from Base64 with UTF-8 and URL-safe formatting.

Password & Key Generator

Generate cryptographically secure random passwords, passphrases, API keys, and pin codes with strength metrics.

UUID / Nanoid Generator

Generate single or bulk UUID v4, UUID v7 (timestamp-ordered), and customizable Nanoids.

URL Parser & Query Inspector

Deconstruct URLs into protocol, host, port, path, and interactive editable query parameters.

CSP Policy Builder & Tester

Visually build, audit, and evaluate Content Security Policy headers (HTTP header, HTML meta tag, or Nginx configuration) with strict-eval warnings.

Subresource Integrity (SRI) Generator

Generate cryptographically secure subresource integrity hashes (sha256, sha384, sha512) and HTML script/link tags for external CDN assets.

X.509 Certificate Decoder

Parse and inspect X.509 PEM/CRT SSL/TLS certificates client-side: Subject, Issuer, SANs, Validity dates, and Serial numbers.

JSON Formatter & Validator

Format, validate, prettify, and minify JSON with collapsible tree view and error highlighting.

Regex Tester & Matcher

Test regular expressions in real-time with match highlighting, capture groups, and flag controls (g, i, m, s, u).

Text & Code Diff Checker

Compare two blocks of text or code side-by-side or inline with visual addition and deletion highlights.

Markdown Live Editor

Live split-pane markdown editor with GitHub-flavored markdown rendering, syntax highlighting, and copy options.

Glassmorphism Generator

Design stunning frosted-glass UI elements with live backdrop-filter blur, opacity, border, and copy-ready CSS / Tailwind.

CSS Gradient Generator

Build linear and radial gradients with interactive color stops, angle controls, preset styles, and CSS export.

Color Converter & Contrast

Convert colors between HEX, RGB, HSL, and OKLCH with WCAG 2.1 contrast ratio and accessibility checks.

Box Shadow Generator

Craft multi-layered, smooth box shadows with live 3D elevation preview and copyable CSS / Tailwind.

PX to REM Converter

Instantly convert pixels to REM / EM with custom base root font sizes (16px default) and interactive lookup table.