Tools
29 tools. Zero data leaves your machine.
Fast, focused utilities that run entirely in your browser. No accounts, no tracking, no server-side processing.
JSON Formatter
Format, minify, and validate JSON with syntax highlighting
Base64 Encode/Decode
Encode and decode Base64 strings with URL-safe support
JWT Decoder
Decode and inspect JSON Web Tokens
Regex Tester
Test regex with live match highlighting and group capture
Markdown Preview
Live preview markdown with split-pane editor
Word Counter
Count words, characters, sentences, and readability stats
Case Converter
Convert text between UPPER, lower, Title, camelCase, and more
Lorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words
Password Generator
Generate strong passwords with customizable options and strength meter
Hash Calculator
Calculate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files
URL Encode/Decode
Encode and decode URLs with encodeURI and encodeURIComponent
HTML Entity Encoder
Encode and decode HTML entities with named and numeric formats
Unit Converter
Convert between length, weight, temperature, data storage, speed, area, volume, and time units
Timestamp Converter
Convert Unix timestamps to dates and back with multiple format outputs
Number Base Converter
Convert numbers between binary, octal, decimal, hex, and custom bases
Percentage Calculator
Calculate percentages, percent of, and percentage change
Color Palette Generator
Generate complementary, analogous, triadic, and monochromatic palettes with WCAG contrast checking
Image Converter
Convert images between PNG, JPEG, and WebP with resize and quality controls
SVG Optimizer
Optimize and minify SVG files by removing unnecessary data
Placeholder Generator
Generate placeholder images with custom dimensions, colors, and text
URL Parser
Parse and inspect any URL into its components with decoded query params
DNS Record Reference
Comprehensive DNS record types reference with search and config generator
HTTP Status Codes
Complete searchable HTTP status code reference with categories and use cases
IP Address Tools
Convert IPv4 formats, calculate CIDR subnets, compress/expand IPv6
Markup / Margin Calculator
Calculate markup and margin from cost and selling price — stop confusing the two
Compound Interest Calculator
Calculate compound interest with contributions, compounding frequency, and growth chart
Salary Converter
Convert between hourly, monthly, and annual salary — with self-employment tax option