Small tools,
kept sharp.
Formatters, encoders, generators and calculators for the small jobs between the work — each one running entirely in your browser. No uploads, no accounts, no waiting on a server.
press Ctrl K anywhere to search
// Converters & Encoders
4Base64 Encoder
Encode and decode Base64 strings with a developer-friendly interface.
JSON Beautifier
Format, validate and beautify your JSON data instantly.
Table Converter
Convert seamlessly between HTML tables, CSV (comma-separated), and TSV (tab-separated) data with live preview and editing.
Code Highlighter
Apply beautiful, themed syntax highlighting to code snippets and copy output in raw or styled HTML format.
// Generators
4Password Gen
Generate secure, random passwords with custom requirements.
QR Code Gen
Generate and customize QR codes with solid/gradient fills, unique eyeball shapes, and custom logo inserts.
Nginx Config Generator
Generate production-ready nginx server blocks for static sites or reverse proxies, with SSL, gzip, security headers, and SPA support.
Cron Expression
Parse cron schedules into plain English, build expressions visually, and calculate next execution runs.
// Text & RegEx
2// Finance & Time
5EMI Calculator
Calculate Equated Monthly Installments for various loans.
Savings Plan (Monthly Deposit)
Calculate future wealth, compound interest earned, and monthly deposit growth schedules.
Salary Tax Calc
Reverse calculate gross salary from expected net income in Cambodia.
Gold Price Tracker
Track real-time gold spot prices, convert across international & Cambodian units (Damleung, Chi), and view historical trends.
Day Count
Calculate days between dates, adjust dates, and track custom countdowns/milestones with local storage.
// Randomizers
2// Hardware Testers
2local-first — your data never leaves the tab
instant — no network roundtrips, no spinners
honest — open source on next.js + tailwind