What is an ESP file?
The .ESP file extension has several different uses. Most often, an .ESP file is an Elder Scrolls or Fallout 4 Plug-in. Bethesda Softworks uses these files to add new game content, characters, and items. Another common use is the Google Earth Studio project file, which stores animation data in a standard JSON format. Other less common uses include ESPRIT CAM data files and ACD/Labs NMR spectral datasets.
How to open ESP files?
Because an .ESP file can belong to completely different software ecosystems, you must use the correct program. Game plugins open with modding tools like the Creation Kit. Google Earth projects open directly in a web browser using Google Earth Studio.
If you do not know the source of your file, viewer.online/esp is the best place to start. It can analyze .ESP files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Best practices and file conversion
If you are managing game plugins, use a dedicated mod manager to sort your .ESP files, as load order affects game stability. If you want to convert your file to a different format, we recommend convert.guru. For example, you can convert Google Earth Studio .ESP files to standard .JSON files to easily edit the raw text data.
Summary
Because .ESP has multiple possible meanings, viewer.online/esp is useful for identifying, inspecting, and understanding .ESP files without installing software or dealing with compatibility problems.