Frequently Asked Questions

How is TagUI licensed?

TagUI is a free, open-source, cross-platform software released under the Apache 2.0 license.

How do I find the XPath of a web element?

In Chrome/Edge, right-click on the element, click Inspect, right-click on the highlighted HTML, then:


For some web pages, the XPath of an element can change. To combat this, you can find a stable element in the web page and writing a custom XPath relative to that stable element.

XPath is very powerful and can allow you to select web elements in many ways. Learn more about XPath at W3Schools. Alternatively, check out SelectorsHub Chrome extension tool.

How do I find the id, name, class or other attributes of a web element?

In Chrome/Edge, right-click on the element, click Inspect. There will be some highlighted HTML, like this:


This highlighted element has a class attribute of “chat-line__body”. It doesn’t have any id or name attribute

How do I use the Command Prompt?

Hold the Windows key and press R. Then type cmd and press Enter to enter the Command Prompt.

From here, you can run a command by typing it and pressing Enter.

How do I use the Terminal?

Hold Command and press spacebar, then type terminal and press Enter.

From here, you can run a command by typing it and pressing Enter.

What are csv files?

CSV files are files which stores data in a table form. They can be opened with Microsoft Excel and Google Sheets. Each line is a row of values. The values are split into different columns by commas ,, which is why CSV stands for Comma Separated Values.

Running flows on a fixed schedule

It is often useful to run flows automatically on a fixed schedule: monthly, weekly, daily or even every 5 minutes.

On Windows, use the Task Scheduler.

On macOS / Linux, use crontab command.

How do I kill any unfinished TagUI processes?

If you Ctrl+C to break a TagUI automation, you can use tagui/src/end_processes (for macOS / Linux) or end_processes.cmd (for Windows) to kill any dead processes of TagUI integrations (Chrome, Edge, SikuliX, Python etc).

Why doesn’t TagUI work on zoom levels other than 100%?

TagUI mimics the user mouse-clicks at the (x,y) coordinates of web elements, so using a different zoom level for your web browser will cause clicks to be triggered at wrong coordinates. Make sure TagUI’s Chrome/Edge browser is set to 100% zoom for best results.

Is TagUI safe and secure to use?

As TagUI and the foundation it’s built on is open-source software, it means users can read the source code of TagUI and all its dependencies to check if there is a security flaw or malicious code. This is an advantage compared to using commercial software that is closed-source, as users cannot see what is the code behind the software.

Following are links to the source code for TagUI and its open-source dependencies. You can dig through the source code for the other open-source dependencies below, or make the fair assumption that security issues would have been spotted by users and fixed, as these projects are mature and have large user bases.

See this section on why TagUI has enterprise security by design -

Does TagUI track what I automate?

No. TagUI does not send outgoing web traffic or outgoing data, other than what the user is automating on, for example visiting a website.

Why doesn’t my visual automation work?

On macOS, it may be due to how the image was captured.

On Linux, you may need to set up OpenCV and Tesseract.