Mobile and Offline Developer Guide

Mobile App Development with Lightning Web Components and LWC Offline
Create Mobile-Ready Components
Use Mobile Device Features in Mobile Apps
Offline Considerations and Limitations
Offline Environment Details
Use Salesforce Features While Offline
Use GraphQL While Mobile and Offline
Use Apex While Mobile and Offline
Use Images in an LWC Offline-Enabled Component
Upload Images While Offline
Understand File Uploads in Salesforce
Image Upload Basics
Image Upload Example
Use Third-Party JavaScript in an LWC Offline-Enabled Component
Navigation
Development Tools and Processes
Quick Start Tutorials
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Image Upload Basics

Uploading an image from an LWC using features supported offline is a two-step process. First, use createContentDocumentAndVersion to upload the image file. This adapter creates ContentDocument and ContentVersion records for the file upload. After the ContentDocument and ContentVersion exist, use createRecord to create the ContentDocumentLink record that relates the image upload to the record you want to attach it to.