Help & Frequently Asked Questions

TechUtility.io is a collection of free, browser-based online utilities for developers, designers, and everyday users. We offer tools for text manipulation, encoding/decoding, image processing, network analysis, OSINT research, and much more - all completely free with no signup required.

Yes, TechUtility.io is 100% free to use. There are no hidden fees, premium tiers, or paywalls. All tools are available to everyone without any cost or registration.

No, you don't need to create an account or sign up. All tools are immediately accessible. We use your browser's local storage only to remember your preferences like favorites and recently used tools.

Your data is completely safe. All processing happens locally in your browser using JavaScript. Your data never leaves your device and is never sent to or stored on our servers. This includes passwords, text, images, and any other input you provide to our tools.

Client-side processing means all computations happen directly in your web browser. When you use a tool like the Hash Generator or Base64 Encoder, your browser performs the calculations locally. The data stays on your computer and is never transmitted over the internet to our servers.

Most tools work offline once the page is loaded, as they run entirely in your browser. However, some tools that require external API calls (like Geo IP Lookup) need an internet connection to function.

TechUtility.io works on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. We recommend using the latest version of your browser for the best experience. All tools are also mobile-friendly and work on smartphones and tablets.

Yes, all tools are fully responsive and work great on mobile devices. Whether you're on a smartphone, tablet, or desktop, you'll have a seamless experience.

Our OSINT (Open Source Intelligence) tools help you analyze publicly available information. Tools like the Password Breach Checker use privacy-preserving techniques like k-anonymity - only a partial hash of your password is sent to check against known breaches, never the actual password. Your privacy is always protected.

K-anonymity is a privacy technique where only the first 5 characters of your password's SHA-1 hash are sent to the API. The API returns all matching hashes, and the actual comparison happens locally in your browser. This means your full password hash (and certainly not your password) is never transmitted.

We're always looking to add useful tools! While we don't have a formal suggestion system yet, we regularly update our collection based on user needs and popular requests.

Some functionality requires external data that can't be stored locally, such as IP geolocation databases or MAC address vendor lookups. In these cases, we only send the minimum required data (like an IP address) and never any personal information. We use free, reputable APIs and clearly indicate when external calls are made.

If you encounter any issues or bugs, we appreciate your feedback. Please check that you're using a modern browser with JavaScript enabled. Most issues can be resolved by refreshing the page or clearing your browser cache.

TechUtility.io is built with modern web technologies including React, TypeScript, and Tailwind CSS. We believe in transparency and privacy-first development.