IS2 files are large due to the embedded radiometric data matrix. JPGs compress this visual information into a lightweight, easily shareable file.

This article will explain precisely what a .is2 file is, why you might want to convert it, and then provide a detailed, step-by-step guide covering all the available methods—from official manufacturer software to free online tools.

If .IS2 files are so powerful, why would anyone want to convert them to a "simpler" format like JPG? The answer lies in practicality:

Many Fluke cameras capture a simultaneous standard digital photo (using IR-Fusion technology) to help identify the physical location of the thermal anomaly.

If you do not have the Fluke software, other thermographic analysis programs like IRT Cronista by GRAYESS also support the IS2 format.

If you prefer a command-line approach or need to batch-process files without official software, you can use specialized tools like: fluke-ti-tool

Never delete your original IS2 files. Think of the IS2 file as a digital negative (RAW file) and the JPG as the final print. Always keep the IS2 files backed up safely in case you need to re-analyze the temperatures later, and only use the JPGs for distribution. Final Thoughts

They require specialized software to read the embedded temperature matrices.

If you're having trouble opening the file, let me know if it's from a so I can narrow down the troubleshooting steps.

: This modern application allows users to view, analyze, and export thermal images directly into JPG, CSV, or XLS formats. Fluke SmartView