---
title: "Dev Headers – Chrome extension stats, history and permissions"
description: "20 users, no ratings yet. Version 2.0.4, updated 2026-08-12. Requests 5 permissions."
url: "https://extensiontracker.com/extension/gjfaoldcikappkiagjapllkfcfogobmb"
---

# Dev Headers

Live in the Chrome Web Store.

- Users: 20
- Rating: no ratings yet
- Last checked: 2026-10-27 00:27 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: +2 (+11.1%)
- Rank by users: #121,698 of 292,131 live extensions
- Rank in Developer Tools: #12,238 of 30,442

## The listing

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

Summary from the listing:

> Adds a header for dev websites.

- Extension ID: `gjfaoldcikappkiagjapllkfcfogobmb`
- Developer: [craig.francis](https://extensiontracker.com/developer/u26f5f993dec7151518281ee9f1daaaf4)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2020-01-11
- Last updated: 2026-08-12
- Version: `2.0.4`
- Size: 74.52 KiB
- Minimum Chrome: 88
- Languages (1): English
- Support page: `https://github.com/craigfrancis/dev-headers/issues`
- Chrome Web Store: <https://chromewebstore.google.com/detail/dev-headers/gjfaoldcikappkiagjapllkfcfogobmb>
- View its code or download CRX: <https://crxpeek.com/extension/gjfaoldcikappkiagjapllkfcfogobmb>
- Search Google for the ID: <https://www.google.com/search?q=%22gjfaoldcikappkiagjapllkfcfogobmb%22&tbs=li:1>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-10-27 | 20 | – | – |
| 2026-09-27 | 18 | – | – |

## What changed

Every change found on a check, newest first.

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

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-27.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

**Every website:** it can read and change your data on all the sites you visit.

### Sites

- `<all_urls>`: Every website

### Browser features

- `declarativeNetRequest`: Block or change network requests, using rules
- `scripting`: Run scripts on sites it can reach
- `storage`: Save settings and data in your browser
- `webRequest`: Watch network requests on the sites it can reach

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Stop Animations](https://extensiontracker.com/extension/gemmknjnneiojfjelmgappppbaneikda) | 7,000 | 3.15 | 110 | Accessibility |

All 2 extensions by [craig.francis](https://extensiontracker.com/developer/u26f5f993dec7151518281ee9f1daaaf4).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every month, and again whenever a new version appears. Last checked 2026-10-27 00:27 UTC; next check around 2026-11-28.

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

## Cite this page

Extension Tracker. “Dev Headers” (gjfaoldcikappkiagjapllkfcfogobmb). Chrome Web Store data, last checked 2026-10-27. https://extensiontracker.com/extension/gjfaoldcikappkiagjapllkfcfogobmb. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_gjfaoldcikappkiagjapllkfcfogobmb,
  title   = {Dev Headers (gjfaoldcikappkiagjapllkfcfogobmb)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-10-27},
  url     = {https://extensiontracker.com/extension/gjfaoldcikappkiagjapllkfcfogobmb},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/gjfaoldcikappkiagjapllkfcfogobmb>. 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. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.