TabCatcher is a tiny browser extension that rounds up all your feral open tabs and herds them into a neat Markdown file — titles, URLs, descriptions, and all. Works on Chrome, Chromium, Firefox, and Edge.

What it does

You click a button. Your tabs become a .md file. That's it. That's the whole thing.

More specifically:

Counts your open tabs and windows so you can feel something
Lets you choose which windows or tab groups to catch — ignore the noise, export the signal
Fetches <meta> descriptions from each page (optional — it does slow things down a smidge)
Groups tabs by window if you're the type who organizes chaos into labeled chaos
Stamps the export with a timestamp so future-you knows exactly when past-you had 74 tabs open at 2am

Installation

This extension isn't on the stores (yet). Load it manually:

Clone or download this repo

Then follow the steps for your browser:

Chrome / Chromium

Go to chrome://extensions/
Enable Developer mode (toggle, top-right)
Click Load unpacked and select this folder
Pin the extension to your toolbar

Microsoft Edge

Go to edge://extensions/
Enable Developer mode (toggle, left sidebar)
Click Load unpacked and select this folder
Pin the extension to your toolbar

Firefox

Go to about:debugging#/runtime/this-firefox
Click Load Temporary Add-on...
Navigate into this folder and select manifest.json
The extension loads until Firefox restarts — for a permanent install, sign and submit it to AMO

Note: Tab group selection is a Chrome/Edge feature. On Firefox you'll see windows only — that's expected.

Usage

Click the TabCatcher icon in your toolbar
Check or uncheck which windows (and tab groups, on Chrome/Edge) to include
Pick your export options
Hit Export Tabs
Save the .md file somewhere you'll definitely find it later

Export options

Option	Default	What it does
Include page descriptions	On	Grabs `meta description` / `og:description` from each tab
Group by window	Off	Splits the export into sections per browser window
Include timestamp	On	Adds the date/time to the top of the file

Output format

The exported file looks something like this:

# Browser Tabs Export

**Exported:** Tuesday, April 1, 2026 at 2:14 AM

**Total Tabs:** 52

---

- **How to center a div - Stack Overflow**
  - URL: https://stackoverflow.com/questions/...
  - Description: The definitive resource for div-centering discourse

- **cute cat videos - YouTube**
  - URL: https://youtube.com/...

Permissions

TabCatcher asks for only what it needs:

tabs — to read tab titles and URLs
scripting — to extract page descriptions from each tab
downloads — to save the .md file to your disk
activeTab — standard popup permission

Contributing

Found a bug? Have a feature idea? Open an issue or a PR. All tabs welcome.

Built because browser bookmarks are a lie we tell ourselves.