Elkhorn Slough Vegetation Imagery Assessment (ESVIA). This suite of Google Earth Engine Javascript code analyzes vegetation change in a historical time-series using Landsat, as well as current-day vegetation productivity using Sentinel 2A imagery. Included in the scripts are operations such as image acquisition, image processing, and applications of vegetation indices with band combinations highlighting vegetation. The purpose of the software is to apply vegetation indices to Landsat 5, Landsat 8, and Sentinel 2A images, conduct a simply NDVI change detection, create histograms showing data distribution, and export the results.