Manage Image Uploads

Survey authors can use the Image and Image Picker question types to add images to a form or questionnaire. Images are embedded in the survey JSON schema as Base64 URLs. However, this technique increases the schema size. To avoid this, you can upload images to a server and save only image links in the JSON schema, as shown in this demo.

To implement image upload, handle the onUploadFile event. Its options.files parameter stores the images you should send to your server. Once the server responds with an image link, call the options.callback(status, imageLink) method. Pass "success" as the status parameter and a link to the uploaded image as the imageLink parameter.

This demo uploads images to SurveyJS servers that erase them after a specified time period. We strongly encourage you to use your own servers for image uploads in production.