Custom Style Script
Developer Tools
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
Users
10K
Rating
4.2
Reviews
42
7D Growth
0|0%
Growth signalUnknownMedium-risk permissions
Custom Script Injector
Extension to inject scripts into whatever web page
Users31Current public install base
Rating2.0Store average score
Reviews2Public review volume
Manifest versionV3Extension platform version
7-day growth+3Net users gained this week
7-day growth rate+10.7%Relative weekly velocity
Preview
1 assetsCustom Script Injector Media preview
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Start
2.00
Latest
2.00
7-day rating change
0.00
2026年7月14日2026年7月20日
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1-day growthFlat
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+3+10.7%30-day growthFlat
00%Technical snapshot
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Version1.0.2
ManifestV3
Size158KiB
Languages1English (United States)
Published
Store updated
Last crawled
English (United States)
Overview
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An easy TamperMonkey substitute that allows you to automatically store and run any custom JavaScript scripts on any websites you want.
**Github code**
https://github.com/aadilmallick/custom-script-injector
**Patch Notes**
- v1.0.0: finish app. Allow scripts to stored, updated, and removed. Scripts will run correctly.
- v1.0.1: add prism code block styling to editor
Reviews
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Store average score2.0Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average2.0Average computed only from synced review bodies below
Reviews with text2Synced review bodies
Total ratings / reviews2Chrome Web Store public rating/review count
Store average score: 2.0. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Rating
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Reviews
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7D Growth
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I am the developer on my alt account. To use this effectively (since this is the new user scripts API) you must wrap all your DOM code in a `setTimeout` so you can wait for the page to load.
Must be for older or heavily re-policied chrome, because current security policies won't allow for the scripts to run (they give extensive errors in the console, some in which could be disabled but it appears that some cannot). It might also be a chromium-only thing. I didn't test it there. Regardless of the two, it did not work at all for any of my test cases.