By: Tero
Tero turns your browser into a force of positive change and lets you fight climate change simply by browsing online.
Features & Capabilities
User Growth & Download Statistics
Manifest V2 Add-on Overrides new tab Overrides home page
- By:
- Tero
- Daily users:
- 144 -3
- Rating:
- 4.47 (19)
- Version:
- 2.52.94 Last updated: 2023-11-12
- Version code:
- 5649638
- Creation date:
- 2018-10-25
- Risk:
- High risk impact Low risk likelihood
- Permissions:
- activeTab
- tabs
- webRequest
- storage
- cookies
- <all_urls>
- activeTab
- Content scripts matches:
- <all_urls>
- <all_urls>
- Size:
- 5.83MB
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-19
- Compare stats and ranking:
- Tero - Save trees by browsing online vs Tero Tabs
- Tero - Save trees by browsing online vs OpenTabs: Save trees by surfing the web
- Tero - Save trees by browsing online vs Tenere
Ranking
Other platforms
For Developers
Contact the developer
Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Permission Change History
2023-02-07: Version 2.52.8 → 2.52.81
Remove Permissions: management topSites
Add Optional permissions: topSites
User Reviews
by 远离*****, 2025-03-29
by 敬念*****, 2025-02-25
Has been inactive for some months in social media/blog and the website is partially broken
by Ge*****, 2023-12-02
Is Tero - Save trees by browsing online 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.
Tero - Save trees by browsing online requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.
Tero - Save trees by browsing online 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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