The tabindex attribute controls whether an element can be focused and its order in the tab sequence. Setting tabindex="0" makes an element focusable in its natural DOM order. A positive integer (e.g., tabindex="1") forces that element to be focused first, before elements without a positive tabindex. Using positive tabindex is discouraged because it can create a confusing navigation order. tabindex="-1" makes an element focusable via JavaScript but removes it from the keyboard tab sequence.

Simply paste your HTML code into the provided text area or enter the URL of your webpage (if accessible without CORS restrictions). Click "Visualize Tab Order" and the tool will analyze all focusable elements, display numbered badges on each item according to their tab sequence, and report the total count. This helps you verify that the keyboard navigation follows a logical flow.

By default, the following elements can receive keyboard focus: <a> with href, <button>, <input> (not hidden), <select>, <textarea>, and elements with contenteditable="true". Additionally, any element with a tabindex attribute set to a non‑negative number becomes focusable.

Web browsers enforce the same-origin policy for security reasons, which prevents a page from accessing the DOM of another domain. If you want to analyze an external website, use the HTML snippet method by copying the page's source code. For local or same‑origin development the URL feature should work fine. Also ensure the URL is accessible and does not block loading via X‑Frame‑Options or similar headers.

Yes, you can customize the badge color using the color picker in the options panel. This helps you see the indicators more clearly against different page backgrounds. The numbered circles will appear at the top‑left corner of each focusable element.