JCOM TV Guide Custom

Name: JCOM TV Guide Custom
Rating: 4 (1 reviews)
Author: macha

By: macha

Customizes the J:COM TV Guide program listings.

Download

Install

Features & Capabilities

A browser extension that customizes the J:COM TV Guide program listings for better readability.

■ Key Features

Genre-based Background Colors Displays background colors on each program based on its genre, such as news, sports, drama, and movies. Makes it easy to scan the listings at a glance.
Cursor Guideline Shows a horizontal line across the program grid while hovering, helping you track time slots more easily.
Program Title Font Size Adjustment Enlarges program titles for improved readability.
Hide Unnecessary Buttons Hides the "Record" and "Want to Watch" buttons shown on each program.

User Growth & Download Statistics

Add-on

By:

macha

Daily users:

2 -1

Rating:

4.00

(1)

Version:

16.4.3 Last updated: 2026-04-06

Version code:

6209900

Creation date:

2026-04-02

Risk:

Permissions:

storage

Content scripts matches:

tvguide.myjcom.jp

Size:

135.60KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-05

Compare stats and ranking:

Ranking

# 60,080 ▼ 8,391

Other rankings

#15 in guide keyword 22 ▼ 3

#58 in tv keyword 29 ▼ 7

#211 in custom feed keyword 22 ▼ 32

#214 in custom font keyword 26 ▼ 34

#231 in program keyword 26 ▼ 42

Upgrade to see more rankings

For Developers

Monetize with App Pass Boost with Extension Booster

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:

macha

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/jcom-tv-guide-custom/

Website:

https://app.macha795.com/jcom-tv-custom/

User Reviews

便利ですが、1つ大きな問題があります。「現在時刻の時間ブロックを強調表示する」機能が、日本時間（JST）ではなく利用者のローカルタイムゾーンを基準に動作しているようです。 J:TV Guideは日本時間を基準としているため、日本国外から利用している場合、強調表示の位置が実際の現在時刻とずれてしまいます。この機能は利用者のタイムゾーンではなく、常に日本時間を基準にするよう修正していただけるとありがたいです。

by ji*****, 2026-06-17

View all user reviews ›

Is JCOM TV Guide Custom 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.

JCOM TV Guide Custom requires very minimum permissions.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
Low ******* ****** ** *** ********* ******** *********

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.

JCOM TV Guide Custom 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.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
Good **** ********* *** **** **** *******