What is an IS2 file?
An .IS2 file is a Thermal Image Data File. Professionals use Fluke Corporation thermal imaging cameras to capture heat data. The camera saves this data as an .IS2 file. These files contain a standard visual image and a radiometric thermal image. This means they store exact temperature data for every pixel. FLIR Systems also develops cameras and software that interact with similar infrared image formats.
How to open IS2 files?
You need specialized software to read the full temperature data inside an .IS2 file. Most users open them using official desktop tools like FLIR Tools or Fluke software. These programs allow you to adjust temperature scales, change color palettes, and create reports.
If you do not have the camera software installed, viewer.online/is2 analyzes .IS2 files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Best practices and conversion
Do not delete the original .IS2 file if you need exact radiometric data later. Standard images cannot store temperature values. However, if you only need to share the image visually with clients, you should convert it. You can convert your files to standard target formats like .JPG or .PNG easily on convert.guru.
Summary
Because .IS2 files use the known ZIP format to store their internal data, viewer.online/is2 can safely open and display them online, eliminating compatibility problems completely.