Insert Style Sheet (CSS) And JS Temporarily

Name: Insert Style Sheet (CSS) And JS Temporarily
Rating: 5 (1 reviews)
Author: zupffwhy

By: zupffwhy

Inject style sheets (CSS) and JavaScript (JS) on the current page or the current tab temporarily.

Insert Style Sheet (CSS) And JS Temporarily

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Install

Features & Capabilities

Insert style sheets and JavaScript into the current page or the current tab temporarily. The difference between this add-on and Stylus and other similar add-ons is that Stylus automatically inserts style sheets into pages that match the URL pattern, but in this add-on, the user manually inserts a style sheet on any page by clicking a button. The purpose of this add-on is, for example, to insert a style sheet temporarily to make it easy to read when encountered a page that is difficult to read, such as using an image as the background or a color with low contrast.

I invite you to explore and help me translate this add-on in Crowdin.

Please make a donation through Kampa!, Amazon (recipient Email: heyxedjn@kampa.me, You can donate a minimum of 15 yen (15 cents)) or PayPal.Me.

Tags: Live editor for CSS and LESS, dark mode, Monochromer, Open Pesticide (You can download its style sheet and use it with this add-on), Pesticide, for Firefox, unblur css, CSS Toggler, websites from hell, 【CSS】とにかく読みにくいページをつくってみた！pointer-events でイベントを制御する (フェンリル | デベロッパーズブログ), 【一部閲覧注意】いろんな意味でインパクトありすぎるWebサイト10 | Webクリエイターボックス

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

1.2025.905.0 Last updated: 2025-09-05

Version code:

6028450

Creation date:

2024-02-03

Risk:

Permissions:

Size:

118.53KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-11

Compare stats and ranking:

Ranking

# 21,786 ▼ 442

Other rankings

#12 in insert keyword 31 #20 in sheets keyword 13 ▼ 1#68 in style keyword 33 ▼ 3#91 in inject keyword 14 ▲ 3#123 in javascript keyword 45 ▼ 2

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

zupffwhy

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/insert-style-sheet-temporarily/

Website:

https://crowdin.com/project/insert-style-sheet-temporarily

User Reviews

by 全民*****, 2025-04-14

by 远离*****, 2025-03-09

很好用很灵活，点赞！建议再加上能切换是否在浏览对应网站时自动应用的开关。

by 独立*****, 2024-09-08

View all user reviews ›

Is Insert Style Sheet (CSS) And JS Temporarily Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Insert Style Sheet (CSS) And JS Temporarily requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Insert Style Sheet (CSS) And JS Temporarily is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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