File ↔ Base58
Encode file bytes or decode text to a downloadable file.
FAQ
Where is data processed?
In your browser. Inputs are not uploaded.
What is supported?
Only the listed modes and finite examples are covered; this is not an all-input proof.
Other Languages
References
How we make sure
We check this tool with the automated test suites linked below. Example checks are shown in their original language.
- Verification method
- Check the Bitcoin alphabet Hello World vector and preserve leading zero bytes across encoding/decoding. Decoder regressions cover retained Hex/Base64 source selectors and uploaded encoded text.
- Comparison reference
- Fixed Hello World → JxF12TrwUP45BMd vector and same @scure/base 2.0.0 inverse for leading-zero bytes.
- Verification scope
- Only the listed modes and finite examples are covered; this is not an all-input proof.
Test source and cases (select a file to read it)
-
completion-tools.test.js
- file-base58: Bitcoin alphabet vector and leading zero bytes
- File decoders treat input as encoded text regardless of the source byte selector
These checks cover the listed examples and boundaries, not every possible input. Round trips and checks using the same library are not independent verification.