New Tab Suspender
A very lightweight tab suspender to suspend inactive tabs that reduces an overall memory usage of Firefox, uses a Firefox native discard API
Manifest V2 Add-on
- By:
- Pradeep Mishra
- Daily users:
- 10,560 60
- Rating:
- 4.33 (86)
- Version:
- 1.9 Last updated: 2021-11-20
- Version code:
- 5326638
- Creation date:
- 2020-02-05
- Risk:
- Moderate risk impact Low risk likelihood
- Permissions:
- tabs
- storage
- sessions
- tabs
- Size:
- 23.46KB
- Email:
- pr*****@gmail.com
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Data ingested on:
- 2025-07-14
Related Articles
User reviews
New Tab Suspender effectively reduces browser memory usage by suspending inactive tabs, especially useful for users handling many open tabs. Its customizable suspension timing and exclusion options are appreciated, though several users report that time settings and exclusion features are unreliable or hard to manage. The add-on lacks good documentation and backup features, making settings management cumbersome. Additionally, it can suspend tabs with active forms, risking data loss unless those tabs are whitelisted. Overall, it is functional but could improve usability and reliability regarding customization and preserving user data. Pros
- Effectively suspends inactive tabs to save memory.
- Works well with a large number of tabs open, helping reduce RAM usage.
- Allows modifying the suspension time from seconds to an hour.
- Has an option to prevent specific tabs from being suspended.
- Runs automatically in the background without user intervention.
Cons
- Time limit settings sometimes do not work as expected (e.g., fixed at 5 minutes despite user changes).
- 'Do not suspend this tab' option does not visibly indicate which tabs are excluded and lacks batch management.
- No clear or accessible interface for setting suspension time, whitelists, or exclusions; lacks documentation.
- No import/export feature for backup or syncing settings across devices.
- Suspends tabs even if forms are active, causing loss of entered data if not whitelisted.
Recent reviews
by Fi*****, 2025-06-19
by 全民*****, 2025-03-29
Great tool for people like me who are living on low RAM. please add a 3 minutes window/ custom window for "suspend after dropdown"
by me*****, 2025-03-19
Extension safety
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.
New Tab Suspender requires a few sensitive permissions. 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.
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 Browser Add-ons, 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.
New Tab Suspender has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- Medium This extension has medium user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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Extension Guard.Compare add-ons
- Compare New Tab Suspender vs New Tab Suspender v2
- Compare New Tab Suspender vs Tab Discard (Suspender)
- Compare New Tab Suspender vs Minimal Tab Unloader
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