About OnlineTools

Fast, free, private tools for the everyday tasks people do on the web — built to run entirely in your browser.

What we do

OnlineTools is a collection of free online calculators, image converters, text tools and URL tools. Whether you need to work out a loan EMI, convert a WebP to PNG, remove duplicate lines from a list, or generate a URL slug, there is a tool here that does it instantly — no signup, no paywall, no data uploads.

Why our tools are private

Every tool runs locally on your device using modern browser technology (JavaScript, the HTML5 canvas API and WebAssembly). That means the content you process never leaves your computer, is never stored on our servers, and is never seen by anyone else. It is the fastest and the most private way to get a result.

Our promise

Completely free — no hidden charges, no premium tiers.
Private — everything runs in your browser.
Fast — results appear instantly, no waiting.
Works everywhere — on desktop and mobile in any modern browser.

Get in touch

Have a suggestion, found a bug, or want a new tool? Visit our contact page.