StackOverflow&Co. : 'Create a custom filter' Button Augmentation

About

Augment Stack Overflow’s “Create a custom filter” button to work even when a filter is already applied.

On some pages with an active custom filter, the “Create a custom filter” button looks clickable but does nothing. This extension patches that specific case so the filter editor opens as expected—usually without a full page reload.


---

What it does:

Detects the broken state when a filter is already applied.

Cleans the URL and invokes the proper action to open the custom filter editor.


---

Why you might want it:

Saves time when customizing search results.

Minimal, targeted fix—no UI, no clutter.


---

Scope & compatibility:

Runs ONLY on stackoverflow.com and subdomains (e.g., meta.stackoverflow.com).

Not affiliated with Stack Overflow or Stack Exchange.


---

Privacy & permissions:

No data collection.

No extra permissions beyond injecting a content script on Stack Overflow pages.


---

Troubleshooting:

Ensure the extension is enabled and you’re on a page with an active filter.

If you’re using Teams or other Stack Exchange sites, make sure those domains are included in your extension’s match list.

Hard-reload the page after installing or updating.


---

Support:

Found an edge case? Please open an issue with the page URL and steps to reproduce.