Frequently Asked Questions
Find answers to common questions about KissThePDF features, privacy guarantees, supported browsers, and open-source contributions.
Is KissThePDF free?
Yes, 100% free! There are no subscription tiers, hidden fees, premium paywalls, or daily file processing limits. Every tool is freely accessible to everyone.
Are my PDFs uploaded to a server?
No. KissThePDF processes documents 100% locally inside your web browser via JavaScript and WebAssembly. Your files never leave your device.
Do I need an account to use KissThePDF?
No. There is no user registration, sign-up form, or login required. Simply navigate to any tool and process your documents immediately.
Which browsers are supported?
All modern web browsers supporting WebAssembly and HTML5 File API are supported, including Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, Brave, and Opera on Desktop, Tablet, and Mobile devices.
Can I use KissThePDF offline?
Yes! Because all PDF processing libraries are downloaded with the application bundle, once the page is loaded (or cached), you can disconnect from the internet or use Airplane Mode to process your files completely offline.
Is KissThePDF open source?
Yes! KissThePDF is licensed under the OSI-approved MIT License. The complete codebase is publicly hosted on GitHub at https://github.com/positiveabhii/kiss-the-pdf.
How can I contribute?
You can contribute by fixing bugs, adding new PDF tools, writing documentation, improving accessibility, or starring the GitHub repository. Check out our Contributing Guide for step-by-step instructions.
KissThePDF is 100% Free & Open Source
All code runs locally in your browser. Contribute code, report bugs, add new tools, or star the repository to support privacy-first software.