About this utility
How to use Byte Endianness Swapper
Reverse byte order within 16-, 32-, or 64-bit hexadecimal words.
What to provide
Whitespace, separators, and 0x prefixes are ignored.
- Paste, type, or drag and drop a supported text file into the input area.
- Choose the options that match your intended result.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
What the result means
Produces a bounded, inspectable byte endianness swapper result locally.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- The tool changes byte order only; signedness, numeric type, alignment, and struct layout remain your responsibility.
Try the included example
Select “Load example” at any time to restore this tested sample.
12 34 56 78 AA BB CC DD