ZetaMarker - PDF & Web Highlighter

Name: ZetaMarker - PDF & Web Highlighter
Rating: 4.333333333333333 (84 reviews)
Author: https://zetamarker.com

The privacy-friendly tool for highlighting web pages and PDF files.

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ZetaMarker is a powerful, privacy-focused browser extension designed for highlighting, annotating, and organizing web pages and PDF files across Chromium-based browsers like Chrome, Edge, Brave, and Opera. It operates on a permission-free principle, ensuring your data remains secure without requiring an account.

Key features include easy highlighting and commenting, robust cross-device synchronization, a powerful search tool to quickly find annotations, and versatile export options supporting PDF, HTML, Markdown, and TXT formats. ZetaMarker also offers a web app for anytime, anywhere access to your notes, continuously evolving with automatic updates to enhance your productivity and organization without compromising your privacy.

Extension

By:

https://zetamarker.com

Users:

20,000

Rating:

4.33

(84) 1 new ratings

Version:

7.4 Last updated: 2025-04-24

Creation date:

2023-05-22

Risk:

Permissions:

storage
activeTab
scripting
identity

Host permissions:

file:///*

Size:

2.39MB

Email:

su*****@zetamarker.com

URLs:

Website ,Privacy policy

Full description:

Source:

Chrome Web Store

Data ingested on:

2025-07-09

Ranking

# 5,505 ▲ 61

Other rankings

#426 in Workflow & Planning ▲ 6

#26 in highlighter keyword 53 ▼ 1

#74 in legal keyword 4 ▲ 3

#74 in pdf keyword 77 ▲ 8

#82 in free access keyword 68 ▲ 6

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User reviews

Users appreciate ZetaMarker's simple, intuitive interface with multiple highlight colors and the ability to export annotations. It is praised as a useful tool for studying and research without cumbersome login processes. However, common issues include loss of highlights when zooming or reloading PDFs, lack of persistent saving across sessions, and limited customization options. Some users also wish for additional features like customizable colors, better editing tools, keyboard shortcuts, and dark mode for PDFs. Overall, it is well-liked but could benefit from improvements in reliability and functionality.

Pros

Simple and intuitive interface that is easy to use.
Allows highlighting and annotating web pages and PDFs effectively.
Multiple highlight colors are available without need for login.
Supports exporting highlights and notes.
Synchronizes and saves highlights for later access, useful for research and study.

Cons

Highlights in PDFs are lost or disappear after zooming or page reload.
Limited or no option to customize highlight colors beyond preset ones.
Issues with persistent saving; highlights sometimes do not remain after reopening pages.
Some users find editing and deleting highlights unintuitive or problematic.
Lack of certain features like dark theme for PDFs, shortcuts, and account management options.

Recent reviews

tudo que ue precisava, ressaltar online e poder depois exportar so o que sublinhei e tem uma interface bem simples e intuitiva alem de uma pagina explicativa de como utilizar <3

bu*****, 2025-06-30

He estado buscando extensiones de subrayador y esta me parece la mas completa, el inicio de sesion es facil, y cuenta con diferentes tipos de personalizacion y respaldo, por lo q se puede acceder mas tarde, si lo recomiendo si realizan investigaciones con mucha informacion y solo quieren centrarse en pèqueños trozos.

Pe*****, 2025-06-30

拜託新增自訂顏色功能QQ

Ba*****, 2025-06-11

View all user reviews ›

Extension safety

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.

ZetaMarker - PDF & Web Highlighter does not require any sensitive permissions.

Risk impact analysis details

Risk likelihood

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

ZetaMarker - PDF & Web Highlighter has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

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