What is an OCT file?
An .OCT file is primarily a digitally signed corporate filing used by the Ministry of Corporate Affairs in India. It stores secure corporate forms and tax submissions.
However, the .OCT extension has multiple possible meanings. It often contains Optical Coherence Tomography data from Thorlabs medical imaging systems. It also functions as a Radiance Octree File for the Radiance lighting simulation software. Game developers like Avalanche Software use .OCT files for game assets, and Octoplus Box uses them for mobile phone firmware.
How to open OCT files?
Because an .OCT file can be many different things, standard software usually cannot open it. viewer.online/oct analyzes .OCT files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. We recommend using viewer.online/oct to identify the actual format of your file before downloading specialized software.
If you need to share the data with others, you can convert the file to sensible target formats on convert.guru. Depending on the internal data structure, you can convert an .OCT file to standard formats like .PDF for documents or .ZIP for data archives.
Summary
Because .OCT files use the known certificate2 format, viewer.online/oct can safely open and display them online, eliminating compatibility problems.