Is Page Ruler Safe? — Extension Safety Profile
Quick verdict: Page Ruler earns a safety grade A, 83.6 out of 100, based on 5 of 5 dimensions.
83.6/100
Grade A · 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
Page Ruler earns a safety grade of A (83.6/100), 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, Page Ruler comes through cleanly. 500,000 active users/installs reported on the store. Store rating 3.9/5 from 101 user ratings. Last updated on the store 2026-04-04. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Page Ruler's own store listing and privacy policy before installing, and weigh it against the other browser extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts 2 of 5 checks verified | Automated signals | |
| Permissions & Access | 90% · 22.5/25 pts 3 of 3 checks verified | Automated signals | |
| Data & Privacy | 83% · 13.2/16 pts 4 of 5 checks verified | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts 1 of 2 checks verified | Automated signals | |
| Community Reputation | 76% · 7.6/10 pts 2 of 4 checks verified | Automated signals |
In-depth safety analysis
The extension requests only storage, scripting, and activeTab permissions. The activeTab permission lets it read and modify the page you are currently viewing, but only after you click the extension’s icon. The scripting permission allows it to inject the ruler overlay into that page. Storage keeps your settings, such as ruler preferences. This is a minimal and expected permission set for a page measurement tool that works on-demand without persistent access to all websites.
General-purpose browser utilities from individual publishers can occasionally change hands or receive updates that alter their behaviour. With a page ruler, the main risk is that an update might silently request broader permissions to read data across all sites. A careful user should periodically review an extension's permissions after updates and stay alert if a simple tool suddenly asks for new capabilities that do not match its function.
The safety score is high overall at 83.59, with Maintenance & Ownership scoring a perfect 100, which indicates the extension is actively maintained and its ownership is consistent. The weakest area is Publisher & Identity at 60, suggesting limited publicly verifiable information about the developer. While the strong maintenance record is reassuring, the lower publisher confidence means users should rely on published code and store policies to judge trustworthiness.
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 Page Ruler?
- Publisher leocompson
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 838 browser extensions we track, Page Ruler scores higher on safety than 78% of them.
Computed from our own database of assessed browser extensions — updated as we track more.
Evidence on File (12)
Page Ruler FAQ
- Is Page Ruler safe?
- Page Ruler earns a safety grade of A (83.6/100) 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 Page Ruler?
- Page Ruler is operated by leocompson.
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