Tab Trail
Visualize a page’s tab order and find gaps
About
Tab Trail is a lightweight bookmarklet that, when activated on any web page, draws a visual map of the page’s tab order and highlights any gaps in focus navigation. It helps developers and QA engineers quickly identify accessibility issues that would otherwise require manual testing. Because it runs entirely in the browser, it works on any site without installation or server‑side setup.
The case
Who it is for
Front‑end developers, QA engineers, and accessibility specialists who need to audit tab order quickly.
What is broken today
Before Tab Trail, checking the tab order of a page required manually tabbing through elements or using DevTools console commands, which is time‑consuming and error‑prone. Developers had no quick visual way to spot gaps or misordered focus, so accessibility audits were often incomplete.
What it does about it
Tab Trail injects a small script into the page that collects all focusable elements, sorts them by their tab index, and renders a colored overlay showing the sequence. It also highlights any missing or out‑of‑order indices, allowing developers to see gaps directly on the page.
Why not the obvious alternative
Unlike generic DevTools or manual tabbing, Tab Trail provides an immediate visual map of the entire tab order in a single click, without needing to write custom code or run an external audit. It works on any live site, including third‑party pages, and requires no installation.
Details
Considered instead of
Named by the maker, not measured by us. It tells you what this is competing with, not which one wins.
Questions
- How do I use Tab Trail?
- Drag the bookmarklet link to your bookmarks bar, open a page, click the bookmark, and the tab order overlay appears.
- Does it work on mobile browsers?
- It works on desktop browsers; mobile support is limited due to touch focus differences.
- Is Tab Trail open source?
- The product is distributed as a bookmarklet; the source is not publicly available.
- Does it affect page performance?
- The script runs only when activated and removes itself afterward, so it has minimal impact.
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