---
title: "Header Modify – Chrome extension stats, history and permissions"
description: "765 users, rated 5.00 by 4 people. Version 2.1.0, updated 2026-07-16. Requests 3 permissions."
url: "https://extensiontracker.com/extension/agbgpchmmgfgdilhnaloggpmmdkecjbo"
---

# Header Modify

Live in the Chrome Web Store.

- Users: 765
- Rating: 5.00 from 4 ratings
- Last checked: 2026-09-26 21:43 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #27,842 of 264,703 live extensions
- Rank in Developer Tools: #2,421 of 27,615

## The listing

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

Summary from the listing:

> Edit HTTP request & response headers on any site. Profiles, URL filters, and import from ModHeader & Requestly.

- Extension ID: `agbgpchmmgfgdilhnaloggpmmdkecjbo`
- Developer: [yamamoto7](https://extensiontracker.com/developer/ufef121d069c43345fe2042d07c13d5c1)
- Trader status: Not declared a trader under EU law
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2026-07-12
- Last updated: 2026-07-16
- Version: `2.1.0`
- Size: 123 KiB
- Minimum Chrome: 88
- Languages (52): Deutsch, English, Filipino, Indonesia, Kiswahili, Melayu, Nederlands, Tiếng Việt, Türkçe, català, dansk, eesti, español, español (Latinoamérica), français, hrvatski, italiano, latviešu, lietuvių, magyar, norsk, polski, português (Brasil), português (Portugal), română, slovenčina, slovenščina, suomi, svenska, čeština, Ελληνικά, български, русский, српски, українська, עברית, العربية, فارسی, मराठी, हिन्दी, বাংলা, ગુજરાતી, தமிழ், తెలుగు, ಕನ್ನಡ, മലയാളം, ไทย, አማርኛ, 中文（中国）, 中文（台灣）, 日本語, 한국어
- Website: `ychof.com`
- Chrome Web Store: <https://chromewebstore.google.com/detail/header-modify/agbgpchmmgfgdilhnaloggpmmdkecjbo>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fagbgpchmmgfgdilhnaloggpmmdkecjbo>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-26 | 765 | 5.00 | 4 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-26.

## 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
- `storage`: Save settings and data in your browser

## 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 2026-09-26 21:43 UTC; next check around 2026-10-04.

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

## Cite this page

Extension Tracker. “Header Modify” (agbgpchmmgfgdilhnaloggpmmdkecjbo). Chrome Web Store data, last checked 2026-09-26. https://extensiontracker.com/extension/agbgpchmmgfgdilhnaloggpmmdkecjbo. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_agbgpchmmgfgdilhnaloggpmmdkecjbo,
  title   = {Header Modify (agbgpchmmgfgdilhnaloggpmmdkecjbo)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-26},
  url     = {https://extensiontracker.com/extension/agbgpchmmgfgdilhnaloggpmmdkecjbo},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/agbgpchmmgfgdilhnaloggpmmdkecjbo>. 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`.