---
title: "Boost: JavaScript & CSS Injector – Chrome extension stats, history and permissions"
description: "56 users, no ratings yet. Version 2.5.5, updated 2026-05-03. Requests 5 permissions."
url: "https://extensiontracker.com/extension/ahmjaphjcficafckanhmgicimemfhnbo"
---

# Boost: JavaScript & CSS Injector

Live in the Chrome Web Store.

- Users: 56
- Rating: no ratings yet
- Last checked: 2026-09-26 21:48 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #81,545 of 264,703 live extensions
- Rank in Developer Tools: #7,627 of 27,615

## The listing

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

Summary from the listing:

> Custom JavaScript & CSS Injector. Edit & inject custom JavaScript and CSS per domain - mobile friendly

- Extension ID: `ahmjaphjcficafckanhmgicimemfhnbo`
- Developer: [KS Lau](https://extensiontracker.com/developer/uc354432c35e076a435387870f90a7235)
- Category: [Productivity › Developer Tools](https://extensiontracker.com/category/productivity/developer)
- First published: 2025-11-22
- Last updated: 2026-05-03
- Version: `2.5.5`
- Size: 560 KiB
- Minimum Chrome: 88
- Languages (1): English
- Chrome Web Store: <https://chromewebstore.google.com/detail/boost-javascript-css-inje/ahmjaphjcficafckanhmgicimemfhnbo>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fahmjaphjcficafckanhmgicimemfhnbo>

## Users over time

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

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-26 | 56 | – | – |

## 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

### Sites where it runs scripts

- `http://*/*`: Every website
- `https://*/*`: Every website

### Browser features

- `scripting`: Run scripts on sites it can reach
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs
- `webNavigation`: Follow your browsing, page by page

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Command Palette](https://extensiontracker.com/extension/kfjmdhmfemlhdgilboknjknpfnhnlodp) | 322 | 4.40 | 5 | Tools |
| [Stream: Grok Prompt Navigator](https://extensiontracker.com/extension/hcjnnokjhlaolaooijaeimhmbffhphnf) | 35 | 5.00 | 2 | Tools |
| [Flip: 簡繁轉換器](https://extensiontracker.com/extension/ndbfkciboldgkihbhjjophcegjhehjaa) | 31 | – | – | Tools |
| [Flare: Ask AI & Web Copilot](https://extensiontracker.com/extension/doldnkjkajbdogfpbdmfipckbmimaelh) | 12 | – | – | Tools |

All 5 extensions by [KS Lau](https://extensiontracker.com/developer/uc354432c35e076a435387870f90a7235).

## 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 21:48 UTC; next check around 2026-10-04.

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

## Cite this page

Extension Tracker. “Boost: JavaScript & CSS Injector” (ahmjaphjcficafckanhmgicimemfhnbo). Chrome Web Store data, last checked 2026-09-26. https://extensiontracker.com/extension/ahmjaphjcficafckanhmgicimemfhnbo. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_ahmjaphjcficafckanhmgicimemfhnbo,
  title   = {Boost:  JavaScript & CSS Injector (ahmjaphjcficafckanhmgicimemfhnbo)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-26},
  url     = {https://extensiontracker.com/extension/ahmjaphjcficafckanhmgicimemfhnbo},
  urldate = {2026-09-28}
}
```

---

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