Is Glasp Web Highlighter: PDF & Web Highlight Safe? — Extension Safety Profile
Quick verdict: Glasp Web Highlighter: PDF & Web Highlight earns a safety grade B, 79.1 out of 100, based on 5 of 5 dimensions.
79.1/100
Grade B · 5 of 5 checks
What we found
Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.
What this safety grade means
Glasp Web Highlighter: PDF & Web Highlight earns a safety grade of B (79.1/100), measured across 5 of 5 dimensions. Its strongest area is Maintenance & Ownership (100%). The weakest is Publisher & Identity (60%) — what holds its grade back the most.
On the public records we can check, Glasp Web Highlighter: PDF & Web Highlight looks broadly trustworthy. 500,000 active users/installs reported on the store. Store rating 4.5/5 from 964 user ratings. Last updated on the store 2026-05-20. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Glasp Web Highlighter: PDF & Web Highlight's own store listing and privacy policy before installing, and weigh it against the other productivity extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts | Automated signals | |
| Permissions & Access | 65% · 16.2/25 pts | Automated signals | |
| Data & Privacy | 93% · 14.8/16 pts | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts | Automated signals | |
| Community Reputation | 93% · 9.3/10 pts | Automated signals |
In-depth safety analysis
This extension requests the ability to read and change data on every website you visit, which is a broad permission typical for a tool that needs to highlight and annotate content across different pages. The activeTab and tabs permissions allow it to interact with your current page and browser tabs, while storage is used to save your highlights and settings locally. This scope of access is expected for a web highlighter, as it must see page content to function.
For any productivity tool that can read website content, a careful user should be aware that it could technically access sensitive information displayed on pages, such as private messages or financial data. The developer states they collect personally identifiable information and website content, so reviewing their privacy policy to understand how this data is handled is a sensible step. The high Data & Privacy score in the fact sheet suggests declared practices are relatively strong, but users should still be mindful of what they highlight on confidential pages.
The strongest dimension for this extension is Maintenance & Ownership, indicating it is actively updated and managed. The weakest is Publisher & Identity, which may reflect less available public information about the company behind it, something a user might consider when deciding whether to trust an extension with broad content access.
AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.
What the store listing shows
Who's Behind Glasp Web Highlighter: PDF & Web Highlight?
- Publisher Glasp Inc.
Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.
How it compares
Among the 25 Productivity extensions we track, Glasp Web Highlighter: PDF & Web Highlight scores higher on safety than 80% of them.
Computed from our own database of assessed Productivity extensions — updated as we track more.
Evidence on File (12)
Glasp Web Highlighter: PDF & Web Highlight FAQ
- Is Glasp Web Highlighter: PDF & Web Highlight safe?
- Glasp Web Highlighter: PDF & Web Highlight earns a safety grade of B (79.1/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
- Who is behind Glasp Web Highlighter: PDF & Web Highlight?
- Glasp Web Highlighter: PDF & Web Highlight is operated by Glasp Inc..
Alternatives we track
Anywhere stickers - simple sticky notes A Compare Glasp Web Highlighter: PDF & Web Highlight head-to-head:
- Glasp Web Highlighter: PDF & Web Highlight vs Notes: Keep Sticky Thoughts in Google Drive — safety comparison
- Glasp Web Highlighter: PDF & Web Highlight vs Super Simple Highlighter — safety comparison
- Glasp Web Highlighter: PDF & Web Highlight vs Anywhere stickers - simple sticky notes — safety comparison
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