Stable signalNo paid features detectedMedium-risk permissions
User JavaScript and CSS icon

User JavaScript and CSS

User JavaScript and CSS on any website

Users200KCurrent public install base
Rating4.8Store average score
Reviews657Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

User JavaScript and CSS Media preview

4 assets
Trend

User growth trend

Review user movement across collected snapshots.

User Growth Over Time

200K200K200K200K200K2026年7月15日2026年7月18日2026年7月21日Latest: 200K
Rating trend

7-day rating trend

View collected rating snapshots from the latest 7-day window to assess rating stability.

7-day rating change

Start
4.75
Latest
4.75
7-day rating change
0.00
4.654.704.754.804.852026年7月15日2026年7月18日2026年7月21日Latest: 4.75
2026年7月15日2026年7月21日
Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthFlat
00%
7-day growthFlat
00%
30-day growthFlat
00%
Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version3.1.2
ManifestV3
Size1.72MiB
Languages2English / русский
Published
Store updated
Last crawled
Englishрусский
Overview

Product summary

Review the store description, core capabilities, and common use cases.

Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page.

Features:

- Instant execution

- Custom libs include

- URL masking allows use one script or CSS on many pages

Documentation:

Reviews

Recent review snapshot

Inspect the latest comments and rating distribution.

Store average score4.8Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.7Average computed only from synced review bodies below
Reviews with text472Synced review bodies
Total ratings / reviews657Chrome Web Store public rating/review count

Store average score: 4.8. 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.

5
394
4
50
3
6
2
6
1
16
Rikkster iSmirror2018年12月5日
5

Лучшее, среди конкурентов. До этого ставил что то подобное, даже больше одного раза, и не удовлетворяли. А это прямо идеальное, рекомендую!

Language ru
Jarrod Whitley2018年12月3日
5

I tried a bunch of the different user JS extensions. So far, this one is the best.

Language en
3 helpful · 0 not helpful
Carsten A.2018年11月2日
5

I love this extension. A feature wish would be a possibility to export only scripts/styles for a specific page and import/merge them without removing ALL existing data. That way I could share some scripts/styles for specific pages with friends who already use this extension with scripts/styles for other pages.

Language en
1 helpful · 0 not helpful
waqar sync2018年10月28日
4

I love & enjoy this extension. It is of great help. (Reason for 4 Stars) Javascript & JQuery scripts don't work on Youtube. There should be an option "Highest JS Priority" as there is for for css. Only CSS works in youtube. Please update for this issue.

Language en
4 helpful · 1 not helpful
Мухин Дмитрий2018年10月26日
5

Здравствуйте. Все нравится, только есть ли возможность на все сайты влиять разом? бесят айфрэймы, знаете ли и всякие там ятэги. Иногда дивы от гугла не радуют

Language ru
Martin Zvarík2018年10月26日
5

Thanks so much!!! I've fixed myself the new Gmail Styling, I couldn't look at it anymore!

Language en
1 helpful · 0 not helpful
Ľuboš Anguš2018年10月23日
1

This is best javascript and css injection plugin available. --- 07. 2024 update After 3.x update it started to behave poorly. Styles are appearing even after deleting them.

Version 3.0.6Language en
3 helpful · 0 not helpful
Zach Harris2018年10月19日
5

Works. The other options require jquery and doesn't work if a website doesn't include it.

Language en
3 helpful · 0 not helpful
Anonymous user2018年10月9日
5

I have been editing CSS on pages I visit for years, now I can do it once and it stays. This is fantastic!

Language en
Hannes2018年10月5日
5

Great extension! Easy to edit page specific rules. Fast en-/disabeling single rules. Good URL wildcard filters.

Language en
3 helpful · 0 not helpful