Visualforce Developer Guide

Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Customizing the Appearance and Output of Visualforce Pages
Standard Controllers
Standard List Controllers
Custom Controllers and Controller Extensions
Advanced Examples
Override Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating a Static Resource
Referencing a Static Resource in Visualforce Markup
Referencing Untrusted Third-Party Content with iframes
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrate 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
Visualforce Best Practices
Standard Visualforce Component Reference
Appendices
PDF

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Using Static Resources

Static resources allow you to upload content that you can reference in a Visualforce page, including archives (such as .zip and .jar files), images, style sheets, JavaScript, and other files. Static resources can be used only within your Salesforce org, so you can’t host content here for other apps or websites.
Using a static resource is preferable to uploading a file to the Documents tab because:
  • You can package a collection of related files into a directory hierarchy and upload that hierarchy as a .zip or .jar archive.
  • You can reference a static resource by name in page markup by using the $Resource global variable instead of hard coding document IDs.

In addition, using static resources to refer to JavaScript or cascading style sheets (CSS) is preferable to including the markup inline. Managing this kind of content using static resources allows you to have a consistent look and feel for all your pages and a shared set of JavaScript functionality.

Tip

A single static resource can be up to 5 MB, and an organization can have up to 250 MB of static resources, total.