About
About sbtwork
sbtwork (Super Brain Team Work) is a collection of free online tools for everyday work. You can convert files, compress PDFs, trim audio and video, calculate loans and taxes, format code, and more, all from one place.
We built sbtwork because most small jobs should not need an installed app, a sign-up form or a watermark on your result. Open a tool, finish the job, and move on.
What you can do here
- Audio and video: convert, cut, join, compress, change speed, add fades, record your screen or voice.
- PDF and images: merge, compress, sign, convert to and from images, resize, remove backgrounds.
- Calculators: finance, loans and EMI, GST, income tax, salary, health, math and unit conversion.
- Writing and developer tools: word counter, case converter, JSON formatter, Base64, hash and password generators.
How we work
- Private by design. Wherever possible, your files are processed in your own browser, so they are not sent to our servers. See our Privacy Policy for details.
- Free to use. The tools are free. You can create an account to save history and favorites, but you do not need one to use the tools.
- Clear and simple. Each tool does one job. We write short instructions so you can finish quickly.
- Always improving. We add new tools and improve existing ones based on what people ask for.
A note on accuracy
Our calculators give estimates based on the inputs you provide and standard formulas. They are meant to help you plan, not to replace advice from a qualified accountant, tax professional or financial adviser. Please check important results before relying on them.
Contact us
Found a bug, want a tool added, or have a question? Visit our Contact Us page or write to superbrainteamwork@gmail.com.