Resource tracker techniques are described in which resource trackers may be generated, assigned to resources, and used to track resources throughout a development environment. The resource trackers may be configured in a designated format that is suitable to distinguish different resources one from one another. In one approach, resource trackers are derived as a combination of a user-supplied project identifier and defined resource identifiers. Resource trackers may be embedded into code defining corresponding resources and exposed to identify resources in connection with various development operations. In an embodiment, the resources trackers may be employed to provide visual indications of resources that appear within a user-interface for a project that is output for testing. A developer may identify resources based on resource trackers exposed via the user-interface and navigate back to underlying code in various ways to address any issues identified through the testing.