Summary
Detecting the encoded runs is the useful part — decoding base64 was never the hard bit.
Anyone can decode a blob they have already identified. What costs time is noticing that a field in a log line, a JWT segment or a config value is encoded at all, and doing it without mangling the surrounding text. Handling that in place means you read the whole thing once rather than copying fragments back and forth. Note the repository name suggests signing rather than encoding; the README is the accurate description.
What it is
A small utility that scans text for base64-encoded runs, decodes them, and substitutes the result — leaving everything that is not base64 untouched.
What you get
Automatic detection and in-place decoding of base64 within a body of text.
Requirements
Python, run as a module. Documentation is in Chinese.
Setup effort
One command — pip install -e .