ihx

ihx is a file extension used in computing to denote firmware images encoded in the Intel HEX format in some software ecosystems. Files with this extension typically contain hexadecimal representations of binary data and are designed for programming microcontrollers and other programmable devices. While the more common extension for Intel HEX data is .hex, some toolchains and bootloaders use .ihx to distinguish a specific variant or to reflect their build pipeline.

Intel HEX is a text-based format for encoding binary data. Each line (record) begins with a colon and includes fields for a data byte count, a load address, a record type, the data payload, and a checksum. Record types indicate data, end-of-file, and address-extension information. The format is designed for straightforward transmission and parsing by firmware programmers, with the data ordered by address.

Usage and scope: ihx files are encountered in embedded development, especially for microcontrollers that accept Intel HEX input during flashing or programming. They appear in toolchains, open-source firmware projects, and educational kits. Depending on the tool, an ihx file may be interchangeable with a .hex file, or may carry a variant that requires a different loader.

Other uses: The acronym IHX can appear in contexts unrelated to firmware, and is not tied to a single standard meaning. As with many file extensions, always check the documentation of the specific toolchain to confirm the expected format for ihx files.