Visualforce Developer Guide

Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Customizing the Appearance and Output of Visualforce Pages
Styling Visualforce Pages
HTML Comments and IE Conditional Comments
HTML Tags Added or Modified by Visualforce
Using a Custom Doctype
Using a Custom ContentType
Setting Custom HTML Attributes on Visualforce Components
Offline Caching Using the HTML5 manifest Attribute
Render a Visualforce Page as a PDF File
Standard Controllers
Standard List Controllers
Custom Controllers and Controller Extensions
Live Controller (Pilot)
Advanced Examples
Overriding Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrating Email with Visualforce
Visualforce Charting
Creating Maps with Visualforce
Render Flows with Visualforce
Templating with Visualforce
Developing Salesforce Apps with Visualforce
Adding Visualforce to a Salesforce AppExchange App
Using JavaScript in Visualforce Pages
Communicating Across the DOM with Lightning Message Service
Best Practices
Standard Component Reference
Appendices
Glossary
PDF

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Offline Caching Using the HTML5 manifest Attribute

Use the manifest attribute of the <apex:page> tag to set an HTML5 cache manifest for offline caching of a page’s critical resources.
The value of the manifest attribute is passed through to the generated HTML. For example:
Renders the following <html> tag:

The manifest attribute is available on the <apex:page> tag for Visualforce pages set to API version 28.0 or higher, and also requires that the applyHtmlTag is set to true (the default).

You can use Visualforce to provide a page’s cache manifest. For example, the CacheManifest page referenced above might be: