ArunBuild

Free tools for
everyday problems.

ArunBuild is a small, growing set of tools that each do one job well.

No signup·No installation·Files stay on your device

Tools

ImagesImage ResizerResize JPG, PNG, and WebP images instantly in your browser.SalaryCTC to In-Hand SalaryConvert your CTC into a real monthly take-home figure.SalaryIncome Tax CalculatorEnter your income, see your tax — slabs, rebate, surcharge, and cess.SalaryOld vs New Tax RegimeCompare both regimes side by side with your own numbers.SalaryHRA Exemption CalculatorThe correct least-of-three calculation, metro rule included.SalaryGratuity CalculatorWhat you're owed under the Payment of Gratuity Act, and what's tax-free.UtilitiesPomodoro TimerA focus timer that stays accurate even in a backgrounded tab.

What ArunBuild is

ArunBuild is built and maintained by one person, Arun. Every tool here solves a single problem and is free to use, with no account, no watermark, and no paid tier.

The tools run entirely in your browser. Your salary figures and your images are processed on your own device and never uploaded, which is why nothing here asks you to sign in. Read more about ArunBuild, or email with a tool you need built.