Developer & Web Tools
Free web development utilities, formatters, encoders, timestamp converters, and hash generators.
Accelerate your software engineering and web development workflow with zero-bloat browser utilities. Every tool runs 100% client-side with full privacy and zero telemetry.
Calculator Directory
Select any tool below to perform calculations with real-time feedback.
URL Encoder / Decoder
Encode or decode URLs, URI parameters, and query strings with support for standard and component modes.
JSON Formatter & Validator
Format, beautify, minify, and validate JSON data with clear syntax error reporting and character counts.
Unix Timestamp & Epoch Converter
Convert Unix epoch timestamps to human-readable UTC and local date-time strings, and vice versa.
Hash Generator (MD5, SHA-256)
Compute cryptographic message digests including MD5, SHA-1, SHA-256, and SHA-512 from plain text.
Explore Other Departments
Discover our other verified calculation suites.
Financial & Business Calculators
Smart models for loans, investments, mortgages, taxes, and retirement planning.
Browse Finance & BusinessFitness & Health Calculators
Evidence-based body metrics, caloric targets, running paces, and pregnancy timelines.
Browse Health & FitnessMath & Scientific Calculators
Fast, verified mathematical engines for algebra, trigonometry, statistics, and fractions.
Browse MathText & Utility Tools
Fast text comparison, word counters, text case converters, and content drafting utilities.
Browse Text UtilityMarketing & SEO Tools
Search engine optimization tools, YouTube keyword tag builders, robots.txt builders, and schema generators.
Browse Marketing & SEOImage & Design Tools
Client-side design utilities, QR code creators, WCAG contrast checkers, and color converters.
Browse Image & DesignUtility & Conversion Calculators
Everyday utilities for time tracking, academics, construction, networking, and conversions.
Browse Utility & ConversionWordPress & Webmaster Tools
Webmaster tools, schema markup generators, robots.txt builders, and meta tag generators.
Browse WordPress Tools