Day21/FreezeFence

Chrome Extension · Manifest V3 · Local Tab Keep-Alive

Keep the tabs
you choose awake.

Stop Chrome from freezing or discarding the background tabs you rely on — dashboards, web apps, long uploads, timers, and active sessions. One big switch per tab, three protection levels, and zero site access until you turn it on.

Add to Chrome — it's freeSee how it works

Inspect UI panels

Chrome 110+
Manifest V3
3 levels
Protection, your way
0 host access
At install
Free
Zero collection
live-dashboard.internalProject notes
live-dashboard.internalFreezeFence toolbar iconOKOFF||
FreezeFence
THIS TAB
live-dashboard.internal
Running · Not frozenNot protectedAll protection paused
PAUSEDProtecting this tabThis tab is not protectedProtection is pausedRule: This Tab (#482)
Protection levelYOUR CHOICE

Basic — Active · Prevent page freezing.Enhanced — Active · Prevent freezing, tab discarding & timer throttling.Maximum — Active · All protection, plus visibility compatibility.

Live status details7 signals
FreezeGuard
ActiveOff—
Frozen
No——
DiscardGuard
ActiveOff—
autoDiscardable
falsetrue—
Heartbeat
4s ago——
Visibility
ShieldedNormal—
Session
#9f2a——
Advanced settings (10 panels)
Interactive interface preview · try the controlsNo browser access requested

A fence around what matters

Switch away.
Keep going.

Built for the background tabs that are still doing something important.

Official FreezeFence promotional banner

01 / Sound Familiar?

Your work shouldn’t stop
when you switch tabs.

Memory saving is useful. Losing a live session isn’t. Protect only the pages that need to keep going.

Without FreezeFence

Unprotected
  • Timers and scripts can freeze in the background.
  • Discarded tabs reload when you return.
  • Live connections and long uploads can be interrupted.
  • Unsaved form state can disappear.
Long uploadPaused
Background timerFrozen
Unsaved formDiscarded

With FreezeFence

Selected tabs protected
  • Only the tabs or domains you choose get protection.
  • Keep important background work running.
  • Reduce surprise reloads and interrupted sessions.
  • Every other tab can keep saving memory normally.
Long uploadRunning
Background timerActive
Your chosen tabProtected
FreezeFence: Keep background work moving

A little protection.
A lot less restarting.

Keep the background tabs you rely on running.

Inspect capture
FreezeFence product visual: choose the tabs to protect

Your tabs.
Your choice.

Protect one tab or an entire site. Leave the rest alone.

Inspect capture

02 / Capabilities

Built for tabs that
cannot afford a reload.

A simple switch on the surface. Precise control when you need to look deeper.

01 /

One big switch per tab

Open the toolbar popup and turn protection on. Use Alt+Shift+F when you want to keep your hands on the keyboard.

Protect this tab
02 /

Three graduated levels

Start with Basic. Use Enhanced to prevent discarding, or Maximum for visibility compatibility on stricter web apps.

BasicEnhancedMaximum
03 /

Rules at the right scope

Protect one tab, a URL pattern, an exact host, or a whole domain. More specific rules take priority.

TAB›URL_PATTERN›HOST›DOMAIN
04 /

Access only when you ask

The host_permissions list is empty at install. A plain-language preview explains site access before you turn protection on.

host_permissions: []AT INSTALL
05 /

Live, honest diagnostics

Inspect FreezeGuard, DiscardGuard, the heartbeat, and autoDiscardable. Export JSON diagnostics when you need a closer look.

Heartbeat: 4s ago
06 /

An exit, always in reach

Pause every protection from the popup. Turn off individual rules, reset all protection, or remove the extension whenever you choose.

Pause all protectionONE CLICK

Start gentle. Dial up when needed.

Three levels. One clear choice.

FreezeFence protection level comparison
Protection capabilityBasicEnhancedMaximum
Prevent page freezingIncludedIncludedIncluded
Prevent automatic tab discarding—IncludedIncluded
Timer throttling compatibility—IncludedIncluded
Visibility compatibility——Included

Basic is the default. Maximum may affect pages that depend on switching between foreground and background. Severe memory pressure can still override protection.

03 / How It Works

Three steps.
Zero configuration required.

You decide which tabs matter. FreezeFence handles the protection from there.

  1. Step 01

    Install with zero
    site access

    Add FreezeFence to Chrome. Keep the FreezeFence icon visible on your toolbar. No website access is granted during installation.

    0Sites with access
    at install

  2. Step 02

    Flip the switch on a tab
    you want awake

    Open the page, select FreezeFence, and turn protection on. Review the site-access explanation and allow access when Chrome asks.

    Protect this tabON

  3. Step 03

    Switch away.
    FreezeFence holds the line.

    Carry on with your work. The toolbar badge and live status panel tell you what protection is doing, including any degraded state.

    Notes✓ ProtectedNew tab

04 / Inside the Extension

A small interface.
Nothing hidden from you.

Real FreezeFence store visuals. Open any image to inspect it at full size.

FreezeFence store visual: The big switchInspect full capture

01 / The big switch

One decision. A clear status.

Turn protection on for the current page. The popup keeps the on/off control central, with the rule source and protection state close by.

FreezeFence store visual: Protection levelsInspect full capture

02 / Protection levels

Only as much as you need.

Basic prevents freezing. Enhanced adds discard protection and timer compatibility. Maximum adds visibility compatibility.

FreezeFence store visual: User controlInspect full capture

03 / User control

The details are there.
When you want them.

Expand the seven diagnostic cards or open advanced settings. Manage rules, review protected tabs, and pause protection whenever you need to.

FreezeFence store visual: PrivacyInspect full capture

04 / Privacy

Access follows your intent.

Install with zero host permissions. Review a plain-language explanation when you enable protection. Your rules and settings remain local.

05 / Privacy Architecture

Your browser.
Your rules. Your business.

Zero data collection — nothing reaches our servers. Protection decisions happen locally. Your rules and settings stay on your device, where they belong.

0

Accounts or sign-ups

No login wall, email capture, or account to maintain. Install and get on with your work.

0

Analytics or telemetry

No usage tracking or analytics. Your browsing activity is not a product metric.

0

Day21 servers

No servers of ours are involved in protection. The work happens in your browser.

Why Chrome shows a site-access prompt when you flip the switch.

Chrome uses standard “read and change your data” wording for site access. FreezeFence installs with no host access and requests permission when you enable protection. It uses that access to check that your protected pages are alive and reapply protection after reloads. It never reads page content, passwords, or messages.

Read the privacy policy

06 / FAQ

A few things
worth knowing.

Clear answers about permissions, protection, and the limits of what a browser extension can do.

Ask a different question
Why do tabs stop working in the background at all?

To save memory, modern browsers quietly pause (“freeze”) tabs you haven't looked at for a while, and may even unload (“discard”) them completely. That's why a task stops when you switch away, or a half-filled form reloads blank. FreezeFence tells the browser to leave your chosen tabs alone.

Why does Chrome warn that the extension can “read and change all your data on all websites”?

That sentence is Chrome's fixed template for site access — every extension that needs it gets the same wording. FreezeFence installs with no host permissions and asks once when you turn protection on, using the access to check that your protected pages are still alive and reapply protection after reloads. It never reads page content, passwords, or messages. Zero data collection — nothing reaches our servers.

Is it free?

Yes — free to install and use. No account, no paywall today. Features and pricing may evolve over time.

Do you collect any of my data?

No. There is no account, no analytics, and no servers of ours involved. All decisions happen locally in your browser, and your rules and settings stay on your device.

Can a protected tab still get frozen?

In extreme cases, yes — under severe memory pressure the operating system or browser can still step in. FreezeFence is honest about this: the icon and status panel show real protection state, including a degraded state when something is interfering, instead of pretending everything is fine.

Which browsers does it work on?

Google Chrome 110 or newer, and Chromium-based browsers that support Manifest V3 extensions.

How do I stop protecting a page?

Flip the same switch off. There is also an emergency “pause all” that suspends every protection at once, and uninstalling the extension removes everything, including its local data.

07 / Guides

A little context.
A lot more control.

Practical guidance for getting the most from your background tabs.

01 / Tab lifecycle

How to stop Chrome from discarding background tabs

Understand why tabs reload, and how to protect the ones you need.

Read guide

02 / Background work

How to keep background tabs awake and active

Keep important timers, tasks, and web apps running when you switch away.

Read guide

03 / Memory Saver

Chrome Memory Saver: keep the sites you need active

Find the balance between saving memory and protecting your work.

Read guide
FreezeFence

Stop babysitting your tabs.

One switch. Your chosen tabs, still running. Free to install.

Add to Chrome — it's free
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