While there isn't a single tool universally known as the "SGDT Viewer," your request likely refers to the SGD Variant Viewer , a core visualization tool of the Saccharomyces Genome Database (SGD)
An SGDT file is essentially a standard JPEG image that contains additional, hidden metadata. sgdt viewer
Primary Tool: Adobe Photoshop is the industry standard for these files. While there isn't a single tool universally known
If you are having trouble opening a specific file, ensure you have a current version of Adobe Photoshop or try the rename to .jpg method for a quick look at the visual content. What is it? How to open an SGDT file? - FILExt Pros: Extremely powerful; visual templates
Trying to force-open an SGDT in Word or Google Sheets can actually corrupt the file metadata, making it harder for a real SGDT viewer to recover the data later.