Extract text from Preprocessed C files (I)
To convert I Intermediate files to another format, you need GCC or other Developer software.
To convert other file formats to the "Intermediate Source File" file type, you need software like GCC or a similar tool.
A .I file usually contains preprocessed C or C++ source code generated by a compiler like GCC or Microsoft Visual Studio. It includes the raw text of the code after all #include headers and macros have been fully expanded, but before the actual compilation into a binary object file. You can open these files with standard code editors like Notepad++ or Visual Studio Code.
For developers, the .I format is strictly temporary and highly inefficient for storage. Because the preprocessor expands all macros and pastes every linked header file in full, a simple 2KB source code file can easily generate a 5MB .I file. For non-developers encountering a random .I file on their computer, the main issue is the lack of a default application assigned to open it, resulting in operating system error prompts.
Furthermore, the .I extension is frequently used incorrectly. Real-world internal file signature analysis reveals that many .I files are actually misnamed files masking a completely different format. It is common to find .I files that are actually PDF documents, ZIP archives (such as PyTorch models), or JPG images. Standard online converters fail to process these because they rely solely on the file extension and crash when the internal data does not match. Our system inspects the internal file signature. If it is a text-based intermediate file, you can easily save it as TXT or C. If our analysis detects an underlying or embedded format like a hidden PDF or ZIP, we will expose the true file type, allowing you to extract, view, or convert the contents properly.
Convert.Guru analyzes your I file, detects the exact format, and lets you read the text inside.
Users also converted UMD, BIN, 17, PD, GOV, PDF, JPG, D and 3 files.
If you want to convert I file to PDF, JPG, D, 3, JS, TS, PY, JAVA, CPP, C, CS or PHP, you can use GCC or similar software from the "Intermediate Compilation Storage" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to I, try GCC or another comparable tool in the "Intermediate Compilation Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our I converter.