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Control use of JavaScript optimizers

Verified with Google Chrome — updated on July 10, 2026

Supported on: Microsoft Windows 7 or later

Path in the GPO console

Computer Configuration\Administrative Templates\Google\Google Chrome\Content settings

Description

Allows you to set whether Google Chrome will run the v8 JavaScript engine with more advanced JavaScript optimizations enabled. Disabling JavaScript optimizations (by setting this policy's value to 2) will mean that Google Chrome may render web content more slowly. This policy can be overridden for specific URL patterns using the JavaScriptOptimizerAllowedForSites and JavaScriptOptimizerBlockedForSites policies. If this policy is left not set, JavaScript optimizations are enabled.

Registry

HKLM Software\Policies\Google\Chrome
HKCU Software\Policies\Google\Chrome

More options available

Options

Control use of JavaScript optimizers
DefaultJavaScriptOptimizerSetting enum
  • Enable advanced JavaScript optimizations on all sites -> 1
  • Disable advanced JavaScript optimizations on all sites -> 2

Export Builder

BETA

Configure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.

These exports write the registry — this is not a managed GPO.

Scope

.reg file

Windows Registry Editor Version 5.00

; Exported from gporais.com
; Policy: Control use of JavaScript optimizers
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Windows 7 or later

[HKEY_LOCAL_MACHINE\Software\Policies\Google\Chrome]
"DefaultJavaScriptOptimizerSetting"=dword:00000001
More formats (PowerShell, Intune, SCCM)

PowerShell

# Exported from gporais.com
# Policy: Control use of JavaScript optimizers
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Windows 7 or later

$path = 'HKLM:\Software\Policies\Google\Chrome'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DefaultJavaScriptOptimizerSetting' -Value 1 -Type DWord

Building a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.

Open the Builder

Embed this policy on your site

What to embed
Theme

Adds one script line: the theme follows your site’s appearance and the height fits the content. If your site blocks scripts, the embed follows the visitor’s system theme.

Preview