Fast, private client-side developer tools, formatters, and calculators designed for zero latency and offline utility.
Privacy First: All calculations, formatters, and encoders run 100% inside your browser using JavaScript Web APIs. No data is sent to external servers.
Advanced client-side calculator featuring Standard, Scientific, and Programmer modes with base conversions.
Format, expand, and prettify raw JSON payloads with custom indentation, minification, and auto-repair features.
Validate JSON syntax against RFC 8259 standards with line-by-line error locations and repair suggestions.
All-in-one JSON suite: Format, validate, prettify, minify, and inspect JSON payloads.
Encode text, Unicode characters, and binary files to Base64 format, or decode Base64 strings safely.
Encode special characters into percent-encoded URI strings and parse URL query parameters.
Test, debug, and replace regular expressions in real-time with match highlighting and capture group details.
Convert Unix epoch timestamps to human-readable dates and back, with real-time live clock and ISO formatting.
Write, format, and preview Markdown documents in real-time with export, document statistics, and toolbar controls.
Compare two blocks of text or code to highlight insertions, deletions, and line-by-line differences.
Generate customizable, high-resolution QR codes for URLs, Wi-Fi networks, text, contacts, and emails with PNG/SVG export.
Convert colors between HEX, RGB, HSL, HSV, CMYK, and HWB with WCAG accessibility contrast scores and harmony palettes.
Design linear, radial, and conic CSS gradients with multi-stop color controls, presets, and Tailwind export.
Build multi-layered, smooth CSS box shadows with live card preview, presets, and Tailwind CSS code export.