Frequently Asked Questions
Everything you need to know about CleanText.online — privacy, tools, and how everything works.
Absolutely. All tools on CleanText.online process data entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever sent to any server. Your data never leaves your device. You can verify this by disconnecting from the internet after loading a tool page — it continues to work perfectly.
No. CleanText.online requires no registration, no email, and no account. Every tool is free to use immediately with zero sign-up required.
Yes. Once a tool page has loaded in your browser, you can disconnect from the internet and all functionality continues to work. The processing logic is included in the page itself and runs locally in your browser.
Local processing means all data manipulation happens in your browser's memory, not on a remote server. This matters because many free online tools send your data to their servers for processing, where it could be logged, stored, or analyzed. With local processing, your data is never transmitted and cannot be intercepted or retained.
Since everything runs locally, the limit depends on your browser and computer memory. Most modern browsers can handle files up to several hundred megabytes without issues. For extremely large files, you may experience slower performance due to browser memory constraints.
CleanText.online supports all modern browsers: Chrome, Firefox, Safari, Edge, and Opera. Internet Explorer is not supported. For the best experience, we recommend using the latest version of Chrome or Firefox.
We use essential cookies to remember your theme preference (dark/light mode) and cookie consent status, both stored locally in your browser. We also offer optional analytics cookies (Google Analytics) to help us understand which pages are most popular. You can accept or reject non-essential cookies via the cookie banner.
CleanText.online is a web application that works on any device with a modern browser. The responsive design adapts to mobile and tablet screens. There is no native mobile app, but the website works great on mobile browsers and can be added to your home screen.
Most online tool sites process your data on their servers, which means they can see, store, and potentially misuse your information. CleanText.online processes everything locally in your browser. This is our core differentiator — your privacy is built into the architecture, not just promised in a privacy policy. Additionally, there are no ads, no tracking, and no registration required.
Yes. All tools on CleanText.online are free for personal and commercial use. There are no usage limits, no licensing fees, and no attribution required.
All data you entered into any tool is held in browser memory only. When you close the tab or browser, the data is gone. We have no servers that could retain your data. The only thing stored locally is your theme preference and cookie consent choice.
The best way to support us is to share our tools with friends and colleagues. If you find a bug or have a feature request, please contact us at sunming889@126.com. We appreciate your feedback!