Update Policy Builder

Chrome 143 adds update_via_cache semantics and makes icon URLs Cache-Control: immutable. Build a manifest, tweak update policies, and see whether your app qualifies for an update.

Manifest Editor

name

short_name

start_url

update_via_cache

prefer_related_applications

Icons

Icon cache policy (v143 behaviour)

Version Bump Simulator

Increment the version or rename the app to see if an update is triggered.

version (in manifest)

Icon Staleness Calculator

Given a Cache-Control max-age (ignored when immutable), when will the icon URL be re-fetched?

Icon URL

max-age (seconds)

Default caching

—

Re-fetched after max-age expires

Cache-Control: immutable (v143)

Never re-fetched

URL is fingerprinted — use new URL to update

immutable

Update Eligibility Check

Based on current policy settings, will Chrome 143 consider this app eligible for an update?

—

Configure the manifest above and click Check.