Prism — Reading Focus Line

Name: Prism — Reading Focus Line
Author: Sandra

By: Sandra

A smooth horizontal focus band that follows your cursor — dims everything else so your eyes never lose the line.

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Features & Capabilities

Long articles, dense documentation, wide spreadsheets — your eyes drift. Prism solves it by dimming the entire page except a precise horizontal strip around your cursor, giving you a natural reading guide that moves with you.

No Reader Mode. No layout change. No page reload. It just works — on every website, instantly.

▸ HOW IT WORKS

Move your cursor over any page and Prism draws a focus strip at that exact position. Everything above and below fades back. Scroll, and the strip glides with your pointer as you read down the page.

Three settings, zero complexity:

🔲 Focus line height — Slim (tight single-line focus), Normal (comfortable), Wide (paragraph-width band)

🔆 Dim strength — Light (subtle tint), Medium (clear contrast), Strong (deep focus mode)

Toggle it off in one click whenever you don't need it.

→ IDEAL FOR

• Long research articles and blog posts

• Code documentation and API references

• Spreadsheets and data-heavy tables

• Any text where your eyes tend to wander

User Growth & Download Statistics

Add-on

By:

Sandra

Daily users:

Version:

1.0 Last updated: 2026-05-24

Version code:

6271950

Creation date:

2026-05-21

Risk:

Permissions:

storage

Content scripts matches:

<all_urls>

Size:

22.79KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-12

Compare stats and ranking:

Ranking

# 119,495 ▲ 1,922

Other rankings

#101 in spreadsheet keyword 11 ▼ 3#248 in focus keyword 32 ▼ 9#250 in cursors keyword 65 ▼ 1

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:

Sandra

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/prism-reading-focus-line/

Is Prism — Reading Focus Line 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.

Prism — Reading Focus Line requires a few sensitive permissions. 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.

Prism — Reading Focus Line is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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