Follow those recommendations for the best results:
Though we support all common web browsers, we strongly recommend using Google Chrome or Mozilla Firefox, because we use latest technologies to render annotations. We also advise you to use the latest version of web browser.
To work with large images and lots of annotations we recommend to use computer with hardware acceleration available. Check if your browser uses hardware acceleration here.
Annotation module supports working with only one Dataset at once.
To start annotation you should open a Project and click on the relevant Dataset from the dashboard. You can also choose Start annotation from the Dataset context menu.
Please use this reference of annotation application interface to quickly navigate to the relevant documentation section:
Home button — returns user to the main menu (Projects page)