Chrome Web Store
36Versions
1Code reviewed

No malware found

In code review

Our reviewer read this extension’s code and found no malicious behaviour. An automated risk flag was reviewed and overturned.

81 indicators in this extension

81 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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What our analysis found

Highlight This: finds and marks words, used by 100,000 people, showed no malicious code in Extension Auditor's review. It comes from a trusted publisher and was last updated in March 2026.

Analyst notes

The extension is a legitimate text highlighting tool with disclosed monetization features (affiliate links and ad-supported version). Analytics are sent only to the publisher's own domain (first-party) and consist of non-personal usage data. The ad module operates within the advertised purpose and fetches configuration from a third-party ad network, but users opt into this by choosing the 'ad-supported' license. No covert data exfiltration, credential theft, or malicious code injection was found. The risk-engine and ML model over-flagged due to common patterns in content scripts and the 'offscreen' permission, which is used only for legitimate backup downloads.

Highlight This: finds and marks words

Highlight This: finds and marks words Chrome extension security report

ID: fgmbnmjmbjenlhbefngfibmjkpbcljaj

Supported Languages

🇳🇱Dutch
🇺🇸English
🇫🇷French
🇷🇺Russian
🇪🇸Spanish

Extension Info & Metadata

Status
Active
Version
6.3.12
Size
4.24 MB
Rating
3.8/5
Reviews
421
Users
100,000
Type
Extension
Updated
Mar 22, 2026
Category
Education
Price
Paid
Featured
Yes
Visibility
Listed
Mature
No
By Google
No
Trusted
Yes
This publisherTrack record
1extension
All still listed
Scanned by Extension Auditor — Low RiskDevelopers: embed this badge to link to this report.

Publisher Contextual Analysis

Trusted
Author
highlightthis.net
MX records exist
Yes
Domain exists
Yes
Is disposable
No
Is role-based
No
Mailbox exists
Yes
Website
Visit
Extensions
1
Active
1
Obsolete
0
Listed
1
Unlisted
0
Users
100,000

Screenshots & videos

Screenshot 1
Screenshot 2

Install growth

Item
Type
Severity
Description
offscreen
Permission
High
This permission creates hidden browser documents with full DOM access. Rated High because it can run background operations invisibly, potentially executing malicious code without user awareness.
Contextual Risk Factors
Risk Factor
High
The following context increases the overall risk:• 10% increase: Early script execution enables pre-emptive content manipulation• 10% increase: About:blank access enables potential sandbox escape vectors
tabs
Permission
Medium
This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.
storage
Permission
Medium
This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
Early Content Script Execution
Risk Factor
Medium
This extension runs content scripts at document_start.
About:blank Access
Risk Factor
Medium
This extension can run content scripts in about:blank pages.
contextMenus
Permission
Low
This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.
notifications
Permission
Low
This permission displays system notifications. Rated Low because it can only show user-visible notifications without accessing system data.
alarms
Permission
Low
This permission schedules periodic tasks. Rated Low because it can only trigger events at specified times without access to sensitive data.

Each row lists a threat category the scanner evaluates. A checkmark means the review ran and found no matching issues in that category for this version.

  • Data Exfiltration

    Code review completed; no malicious patterns detected for this category.

  • Unauthorized Data Collection

    Code review completed; no malicious patterns detected for this category.

  • Network Interception

    Code review completed; no malicious patterns detected for this category.

  • Code Injection

    Code review completed; no malicious patterns detected for this category.

  • Credential Theft

    Code review completed; no malicious patterns detected for this category.

  • Obfuscation

    Code review completed; no malicious patterns detected for this category.

  • Tracking

    Code review completed; no malicious patterns detected for this category.

  • Privilege Escalation

    Code review completed; no malicious patterns detected for this category.

  • Phishing

    Code review completed; no malicious patterns detected for this category.

  • Remote Code Loading

    Code review completed; no malicious patterns detected for this category.

  • Other

    Code review completed; no malicious patterns detected for this category.

81 indicators in this extension

81 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe

About this extension

Automatically finds and highlights words and phrases on the web page according to your list

Read the publisher’s full description

- No registration required - Organize your search words in groups and lists - Use Regular Expressions (Regex tokens) - All data stored locally - Auto-refreshes highlights on page reload and content changes - Unlimited words and lists - Synchronise lists between your browsers Highlight This! comes: - as a Free version, limited to 200 words and limited highlighting styles - an Unlimited version with affiliate partner link highlighting https://highlightthis.net/PartnerLinks.html - 2 paid versions. Easy to use Chrome Extension that automatically searches for defined words in the current browser tab and marks them in a text. Many more advanced features available through settings: - Create color-coded keyword lists - Disable highlighting on certain sites - Export or import your settings and keyword lists - Define click action - Use lists from Pastebin, Google Sheets Privacy Statement: https://highlightthis.net/Privacy.html EULA: https://highlightthis.net/EULA.pdf ** New in 6.3.10 - Fix: Issue with lookbehind regex ** New in 6.3.8 - Fix: Issue when extending license information ** New in 6.3.8 - Fix: Minor fix in detecting words after, or before, a forward-slash ** New in 6.3.7 - Fix: Minor fix in detecting words after lower quotation marks - Fix: Incorrect highlighting with Regular Expressions that contain \b ** New in 6.3.6 - Fix: lists are not sorted anymore - Fix: breaking highlights due to specific control for "flex" containers ** New in 6.3.4 - Fix: an issue with sequence of Regex words - Fix: an issue with invalid characters in a wordlist - New: You can now order lists of words to give priority in highlighting if there are duplicate words ** New in 6.3.3 - Fix: Complete words are not always correctly highlighted ** New in 6.3.2 - Improved: Word breaking symbols list has been extended ** New in 6.3.1 - Fix: zip file issue when installing extension ** New in 6.3 - New: Better support for languages which have no spaces or punctuation between words - New: Better support for languages with diacritics - Fixed: Sync with Google Sheets has been fixed ** New in 6.2.3 - New: You can now put a border around input fields if there is a matching word inside ** New in 6.2.2 - Fixed: a performance issue ** New in 6.2.1 - Fixed: an issue with highlighting in shadow-root elements ** New in 6.2 - New : Improved performance on large webpages - Fixed: an issue whereby words could disappear while filtering the list of words ** New in 6.1 - New: Make backups automatically - New: Open clicks on highights in new window or current tab ** New in 6.0.10 - Fixed: an issue with highlighting of web components - Fixed: an issue with look behind regular expressions ** New in 6.0.9 - New: Now also highlighting in Shadow DOM ** New in 6.0.8 - Fixed: an issue whereby lists cannot be opened to edit - Fixed: an issue on LinkedIn jobs ** New in 6.0.6 - Fixed: highlighting on Single Page Apps - New: Form to send a bug to the developer ** New in 6.0.5 - Fixed: issue with corrupted synchronized lists which breaks the rendering of the lists ** New in 6.0.4 - Fixed: issue with restoring backups - New: ability to reset all data and settings ** New in 6.0.1 - Fixed: issue with transforming Synchronized lists ** New in 6.0.0 - Extra styles for highlighting : Bold, Italic, Underline - Ability to change highligting by selecting rounded corners, padding, shadow - Ability to define a zone on a page for highlighting - Switch to Manifest v3, which better protects user security - Subscriptions - Fixed: speed of editor - Fixed: various small issues with remote lists ** New in 5.3.6 - Fixed: an issue with scrolling to highlight tags ** New in 5.3.5 - Fixed: Performance issues ** New in 5.2 - Define click actions for highlighted words - Support for loading words from Google Sheets - Define download frequency for remote lists - Fixed: Negative reverse lookup regex - Fixed: Issue with Highlight overview - Fixed: Issue with download button ** New in 5.1 - Support for case sensitive matching - Manage words from context menu ** New in 5.0 - New editor to manage your words (filter, select, delete, move) - Support for Regex tokens ** Define words ** Easily specify words and phrases you want to be highlighted. ** Highlighting ** Highlights the words and phrases on the page Shows how many words have been highlighted ** Works on Ajax pages ** The extension detects changes to the page and re-highlights the words.

User reviews

Extension files

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URLs
77
IPv4
3

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

No URLs found
No IP addresses found

81 indicators in this extension

81 indicators
1 version analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99Start 7-day trial — all reports
One-time payment · Secure checkout by Stripe
Version
Size
Verdict
Findings
Permhash
6.3.12
Latest
4.24 MBNo malware found0
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.9
4.25 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.8
4.25 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.7
4.25 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.6
4.25 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.4
4.25 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.3
4.24 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.2
4.24 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3.1
4.24 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
6.3
4.31 MBNot scanned—
eab899d31c87e00f7764927446a1c4b82ad5c9f3db8b3abec9b8a7ac731202e3
Showing 1 to 10 of 40 rows
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Code Diff

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