Tech Toolbox

Free, fast, private utilities for developers and tech enthusiasts. Everything runs in your browser - no data is sent anywhere.

QR Code Tools

QR Generator
Generate a QR code from any text or URL. Quick and simple with instant download.
QR Studio
Advanced styled QR codes with custom dots, corners, colors, logos, and multiple export formats.
Advanced

Encoding & Conversion

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Base64
Encode and decode Base64 strings. Supports text and file input.
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URL Encoder
Encode and decode URL components. Handle special characters safely.
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JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, and expiration.
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JSON Formatter
Format, validate, and minify JSON. Syntax highlighting with error detection.
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HTML Entities
Encode and decode HTML entities. Escape special characters for safe HTML output.
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Number Base
Convert between binary, octal, decimal, and hexadecimal number systems.

Security & Hashing

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Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any input text.
Password Generator
Generate secure random passwords with customizable length and character sets.
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UUID Generator
Generate v4 UUIDs. Create single or bulk unique identifiers instantly.

Developer Utilities

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Timestamp Converter
Convert between Unix timestamps and human-readable dates. Live clock included.
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Regex Tester
Test regular expressions with live matching, capture groups, and highlighting.
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IP / Subnet Calculator
Calculate network address, broadcast, host range, and CIDR from any IP and subnet mask.
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Color Converter
Convert between HEX, RGB, and HSL color formats with a live preview.
Lorem Ipsum
Generate placeholder text by words, sentences, or paragraphs.