Buyer’s guide
What to check before installing a website blocker extension
The largest blocker is not automatically the best blocker. Start with the boundary you need, then choose the smallest permission and feature set that can enforce it.
Fact-checked August 24, 2026
First choose the kind of boundary
“Website blocker” describes several different products. One may keep a domain closed until you deliberately re-enable it. Another may allow twenty minutes per day. A third may coordinate scheduled sessions across every device you own.
Persistent list
Open or blocked
Best when a handful of sites simply should not open in this browser.
Time allowance
Limited, not forbidden
Best when the site is useful but you want a daily ceiling.
Focus system
Scheduled sessions
Best when routines, hard locks, applications, and multiple devices matter.
Read the permission prompt as a product description
Permissions reveal architecture. An extension that modifies YouTube recommendations or measures time on a page needs deeper page access than one that hands Chrome a list of domains to refuse.
Broad access is not automatically malicious; it may be necessary for the advertised feature. The important question is whether you want that feature enough to grant that access. A trustworthy listing explains the trade rather than hiding it behind “we value your privacy.”
Follow the blocklist and the browsing history
A blocklist can reveal sensitive habits. Syncing it is convenient, but it also moves that list from local browser storage to an account or cloud service. Usage dashboards require another category of data: which sites were open, and for how long.
Decide whether cross-device convenience or analytics is worth that data model. If it is, choose a provider whose policy clearly states retention and deletion. If it is not, choose a blocker that never produces the data in the first place.
Useful feature or another thing to maintain?
- Schedules
- Valuable for recurring work hours; unnecessary when the same sites are always blocked.
- Password protection
- Useful for parental controls or accountability partners; friction for personal lists.
- Usage analytics
- Useful when you want to study behavior; overhead when you already know the distracting sites.
- Cross-device sync
- Useful across phones and computers; unnecessary for a short list in one browser.
- Bypass button
- Useful for accidental blocks; counterproductive when the point is to stop negotiating.
A 60-second installation checklist
- 01 Does it block the way you need: permanent, limited, or scheduled?
- 02 Can you explain why it needs every requested permission?
- 03 Is the blocklist local, synced, or tied to an account?
- 04 Does “free” mean free, a trial, or a restricted tier?
- 05 Can you remove your data and export your settings?
- 06 Does the block page support the boundary or immediately undermine it?
For concrete differences, see the current comparisons withBlockSite,StayFocusd,Cold Turkey, andFreedom.