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Features & Capabilities
User Growth & Download Statistics
- By:
- Jayne
- Daily users:
- 993 6
- Rating:
- 4.62 (55)
- Version:
- 1.0 Last updated: 2021-11-16
- Version code:
- 5324463
- Creation date:
- 2021-11-16
- Risk:
- Very low risk impact Low risk likelihood
- Size:
- 391.79KB
- Email:
- j.*****@gmail.com
- Source:
- Firefox Add-ons Store
- Data ingested on:
- 2026-06-19
- Compare stats and ranking:
- Mountains & Valleys vs Colorful mountains
- Mountains & Valleys vs Mountains and wildflowers
- Mountains & Valleys vs Valley of Flowers
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.
User Reviews
Pros
- Nice design
- All-around good theme
- Looks pretty
Cons
- Text on inactive tabs is barely readable
- Image quality is poor, looks heavily compressed
- Faint text in the address bar can be hard to read unless selected
- Personal preference against translucent menus/dialog boxes
Recent reviews
by Sh*****, 2025-10-23
by Jo*****, 2024-11-11
Hey! Love the Theme and have been using it for years, i switched to Brave recently though. Any Possibility to get the original Image so i could try and reverse engineer it for chromium?
by Li*****, 2024-03-12
Is Mountains & Valleys 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.
Mountains & Valleys does not require any sensitive permissions.
Risk impact analysis details
- Low This permission has no access or impact on the user's system or data, thus carrying no risk.
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.
Mountains & Valleys 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.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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