---
title: "Extension Magic box – Chrome extensions from this developer"
description: "4 Chrome extensions from the publisher account of Extension Magic box, with 20,847 users in all."
url: "https://extensiontracker.com/developer/u99f50e7d98b3cb00894b0274179eef93"
---

# Extension Magic box

- Extensions: 4
- Users in all: 20,847
- First published: 2023-09-22
- Publisher account: `u99f50e7d98b3cb00894b0274179eef93`

Extensions are grouped by the store's own publisher account ID, so a developer who uses several accounts appears on several pages. Live extensions come first, most users first.

| Extension | Category | Users | Rating | Updated | Status |
| --- | --- | ---: | ---: | --- | --- |
| [X/Twitter Content Backup Tool - X/Twitter media Downloader](https://extensiontracker.com/extension/dcpelmafllhhdcbiegigphjnbgnolkgm) | Tools | 20,000 | 3.76 | 2026-08-22 | Live |
| [web copy master](https://extensiontracker.com/extension/omhonifekncchfphlcfabifhploloaee) | Tools | 801 | 5.00 | 2025-11-07 | Live |
| [Resend Email Sender - Marketing & Transactional Emails](https://extensiontracker.com/extension/djiffnefodabdkpoafjbpeaonjckjcbg) | Tools | 40 | – | 2026-04-01 | Live |
| [BookmarkOS - 格子书签](https://extensiontracker.com/extension/pekcdopoifefiolfaeppmkkbjajmojoj) | Tools | 6 | – | 2025-10-24 | Live |

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/developer/u99f50e7d98b3cb00894b0274179eef93>. 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`.