Thirty tools. Zero servers.
Every utility here runs fully in your browser. Nothing you type, paste, or generate is ever sent anywhere.
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QR Code Generator
Generate SVG/PNG QR codes with tracking cleanup, custom module shapes, gradients, and logos.
Image QR
Embed scannable QR codes into photos using binary halftoning and dithering.
JSON Formatter
Format, minify, and validate JSON payloads with syntax error detection.
SQL Formatter
Prettify SQL queries and standardize keyword capitalization.
Markdown Preview
Render GitHub-flavored Markdown side by side with live HTML export.
Base64 Codec
Encode and decode UTF-8 text and binary data into RFC 4648 Base64.
URL Encoder
Percent-encode and decode URI strings and URL search parameters.
HTML Entities
Escape HTML special characters to named and numeric entity references.
Password Generator
Generate cryptographically secure passwords using Web Crypto API CSPRNG.
UUID Generator
Generate RFC 4122 compliant UUID v1 timestamped and v4 random identifiers.
Lorem Ipsum
Generate customizable placeholder text by word count, sentence, or paragraph.
Timestamp Converter
Convert Unix timestamps (seconds & milliseconds) to UTC and local ISO 8601.
Color Converter
Convert between HEX, RGB, HSL, HWB, and CMYK color representations.
Number Base
Convert integers between base-2 (binary), base-8, base-10, and base-16.
CSS Formatter
Prettify or minify CSS stylesheets with ruleset indentation controls.
XML Formatter
Format and validate XML markup documents with DOM parser verification.
YAML Formatter
Lint, parse, and format YAML documents with custom indentation levels.
JSON ↔ CSV
Bi-directional conversion between JSON object arrays and delimited CSV.
JWT Debugger
Inspect JSON Web Token headers, payload claims, and signature validity.
JWT Generator
Generate signed HS256/384/512 JSON Web Tokens with custom claim bodies.
Hash Generator
Compute cryptographic digests: SHA-1, SHA-256, SHA-384, SHA-512, and HMAC.
String Escaper
Escape strings for JSON, JavaScript, SQL, regular expressions, and HTML.
Regex Tester
Test regular expressions with real-time match visualizer and capture grouping.
Text Diff
Compute line-by-line diffs between two texts with additions and removals.
String Inspector
Measure string length, byte weight, word count, line breaks, and Unicode data.
Case Converter
Convert strings between camelCase, snake_case, kebab-case, and CONSTANT_CASE.
Cron Visualizer
Parse 5-part cron expressions and project upcoming execution timestamps.
IP Subnet Calculator
Calculate network address, broadcast, netmask, and host counts from CIDR blocks.
Keyboard Tester
Log physical keyboard scancodes, event keys, and modifiers in real time.