---
title: "AO3 Advanced Marker – Chrome extension stats, history and permissions"
description: "3,000 users, rated 5.00 by 12 people. Version 14.2, updated 2026-09-24. Requests 10 permissions."
url: "https://extensiontracker.com/extension/mfpefhlopjkdhgjmihliggklkkkppfan"
---

# AO3 Advanced Marker

Live in the Chrome Web Store.

- Users: 3,000
- Rating: 5.00 from 12 ratings
- Last checked: 2026-09-27 05:31 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #12,549 of 264,703 live extensions
- Rank in Social Networking: #573 of 7,022

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Mark fanfics as read, track reading history, sync bookmarks to AO3, track yearly reading stats, and rate fics with a 5-star system.

- Extension ID: `mfpefhlopjkdhgjmihliggklkkkppfan`
- Developer: [leehsuus](https://extensiontracker.com/developer/u7aaf09a9740ef290cb6840fe926c8b9f)
- Trader status: Not declared a trader under EU law
- Category: [Lifestyle › Social Networking](https://extensiontracker.com/category/lifestyle/social)
- First published: 2025-11-08
- Last updated: 2026-09-24
- Version: `14.2`
- Size: 137 KiB
- Minimum Chrome: 88
- Languages (1): English
- Website: `https://ao3advancedmarker.com/`
- Chrome Web Store: <https://chromewebstore.google.com/detail/ao3-advanced-marker/mfpefhlopjkdhgjmihliggklkkkppfan>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fmfpefhlopjkdhgjmihliggklkkkppfan>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 3,000 | 5.00 | 12 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

### Sites

- `*://*.archiveofourown.org/*`: archiveofourown.org and its subdomains
- `https://accounts.google.com/*`: accounts.google.com
- `https://ao3advancedmarker.com/*`: ao3advancedmarker.com
- `https://api.jsonbin.io/*`: api.jsonbin.io
- `https://oauth2.googleapis.com/*`: oauth2.googleapis.com
- `https://www.googleapis.com/*`: www.googleapis.com

### Sites where it runs scripts

- `*://*.archiveofourown.org/bookmarks*`: archiveofourown.org and its subdomains
- `*://*.archiveofourown.org/collections/*`: archiveofourown.org and its subdomains
- `*://*.archiveofourown.org/series/*`: archiveofourown.org and its subdomains
- `*://*.archiveofourown.org/tags/*`: archiveofourown.org and its subdomains
- `*://*.archiveofourown.org/users/*`: archiveofourown.org and its subdomains
- `*://*.archiveofourown.org/works*`: archiveofourown.org and its subdomains
- `https://ao3advancedmarker.com/oauth-callback*`: ao3advancedmarker.com

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs
- `unlimitedStorage`: Store more data than the usual limit

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-09-27 05:31 UTC; next check around 2026-10-03.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “AO3 Advanced Marker” (mfpefhlopjkdhgjmihliggklkkkppfan). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/mfpefhlopjkdhgjmihliggklkkkppfan. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_mfpefhlopjkdhgjmihliggklkkkppfan,
  title   = {AO3 Advanced Marker (mfpefhlopjkdhgjmihliggklkkkppfan)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/mfpefhlopjkdhgjmihliggklkkkppfan},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/mfpefhlopjkdhgjmihliggklkkkppfan>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.