Base58 Encode/Decode (Binary)

100% client-side processing (no server upload). Encode binary files to Base58 text or decode Base58 back to raw bytes. Includes alphabet selection (Bitcoin/Flickr/Ripple), optional line wrapping on encode, and strict validation and separator handling on decode.

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About Base58 Encode/Decode (Binary)

This tool supports multiple actions for working with Base58 and binary data: encode a file (bytes) into Base58 text, or decode Base58 text back into a file (bytes). Choose the action, pick the alphabet variant (Bitcoin, Flickr, or Ripple/XRP), then run it to get predictable output with clear errors when something is invalid.

Features

Encode binary files (bytes) to Base58 text
Decode Base58 text back to raw bytes (downloadable file output)
Alphabet selection: Bitcoin (default), Flickr, Ripple / XRP
Encode formatting: optional line wrapping (0–120) and optional final newline
Choose output line separator: LF ( ) or CRLF ( )
Decode helpers: accept data:*;base58, prefix and ignore separators/whitespace (optional)
Strict validation option to reject characters outside the selected alphabet
Multi-file dropzone with batch panels for quick conversions
100% client-side processing (no server upload).

How to use for base58-binary-encoder

Paste or drop content

To encode: drop/upload a binary file in the dropzone. To decode: paste Base58 text into the input area (or open a text file containing Base58).

Choose action and run

Select Action: "Encode file → Base58" or "Decode Base58 → file". Pick the Alphabet (Bitcoin/Flickr/Ripple). Then click "Encode" or "Decode" to run.

Copy or download

If you encoded: copy the Base58 output text. If you decoded: download the produced bytes as a file (file naming follows the tool's rules, e.g., stripping .b58 and falling back to .bin).

Technical specifications

Execution Model

Runtime disclosure and constraints for both actions (encode + decode).

Aspect	Detail
Runtime	100% client-side processing (no server upload).
Action scope	Encode + decode (this page)
Encode input	Binary (File/Blob/Uint8Array/ArrayBuffer/TypedArray)
Encode output	Base58 text (optionally wrapped, with configurable newline behavior)
Decode input	Base58 text string (optionally accepts data:*;base58, prefix)
Decode output	Raw bytes (download as .bin by default)
Alphabets	Bitcoin (default), Flickr, Ripple / XRP
Limits	~1–2MB chars; ~25000 ms timeout
Retention	All processing happens locally in your browser (no upload)

Even with local processing, avoid handling highly sensitive data on shared or untrusted devices. For secrets, prefer offline tooling.

Mini Example

A minimal illustration of what the two actions do (output depends on options and alphabet).

Action	Example input	Example output
Encode	Binary bytes (uploaded file)	Base58 text (alphabet-dependent)
Decode	Base58 text	Binary bytes (downloadable file)

This tool is binary-focused: in encode mode it expects bytes (not a normal text string). In decode mode it expects a Base58 string.

Errors & Edge Cases

Common failure modes and how to fix them.

Symptom	Likely cause	What to check
This tool encodes binary data... not a text string	You tried to encode a string instead of uploading bytes	Use the dropzone / upload a file, or pass bytes (Uint8Array/ArrayBuffer) in integrations
Unsupported binary input type	Input is not File/Blob/Uint8Array/ArrayBuffer/TypedArray	Convert to Uint8Array or upload a file
Input too large (max 2MB)	Input exceeds size guardrail (encode bytes or decode text)	Split the file/string or process in chunks
Adapter call timed out	Operation exceeded ~25000 ms	Reduce size; avoid batch processing huge files; keep live preview off for large inputs
Invalid characters / validation error	Base58 string contains characters not in the selected alphabet	Verify Alphabet selection; enable/disable Strict validation as needed
Decoding fails on pasted formatted strings	Separators/whitespace or a data URI prefix is present	Enable Allow separators/whitespace and Accept data:*;base58, prefix

Command line alternatives

For automation, CI, or sensitive data, use local tooling. Base58 is not standardized in common OS core utilities, so use a well-known library for the exact alphabet you need (Bitcoin/Flickr/Ripple).

All platforms (Python)

Encode a binary file to Base58 (library-based)

python -c "import sys; print('Use a reputable Base58 Python library and select the correct alphabet (Bitcoin/Flickr/Ripple).')"

Python's standard library does not include Base58. Use a maintained library and pin its version for reproducible output.

Node.js

Encode/decode Base58 using a maintained library

node -e "console.error('Use a well-known Base58 library and pick the correct alphabet (Bitcoin/Flickr/Ripple).')"

Node does not ship a Base58 codec in core. Prefer a reputable library and document the alphabet choice to avoid mismatches.

Use cases

Quick binary-to-text conversion for transport

Encode small binary blobs into Base58 for systems that dislike ambiguous characters
Convert files into Base58 strings for copy/paste workflows

Interoperability checks across Base58 alphabets

Validate which alphabet (Bitcoin/Flickr/Ripple) a partner system expects
Standardize alphabet choice in documentation and test vectors

CI sanity checks for Base58 inputs

Reject non-conforming Base58 strings using Strict validation in a reproducible pipeline
Ensure your fixtures decode back to the expected bytes

Safe handling and validation of pasted Base58 strings

Avoid accidental character confusion by enabling Strict validation
Strip data URI prefixes and ignore separators when receiving Base58 from emails or logs

❓ Frequently Asked Questions

Is there a public API for this tool?

No. This tool is intended for interactive browser use and does not expose a public API endpoint.

Is processing local or remote?

100% client-side processing (no server upload). Encoding/decoding runs in your browser; files and strings are not uploaded.

Should I process secrets here?

Avoid processing highly sensitive secrets in a browser unless you fully trust the device and environment. Prefer local scripts/CLIs for sensitive data.

Why does decoding fail with "invalid characters"?

Base58 is alphabet-dependent. If the input contains characters outside the selected alphabet (Bitcoin/Flickr/Ripple), decoding can fail—especially with Strict validation enabled. Select the correct Alphabet and consider enabling Allow separators/whitespace if the string includes formatting characters.

Why do I get "Input must be a string for decode" or "upload a file" errors?

The tool is mode-sensitive: encode expects bytes (upload a file or provide a byte array), while decode expects a Base58 text string. Switch the Action or change the input type accordingly.

Pro Tips

Best Practice

Always document and share the alphabet you used (Bitcoin vs Flickr vs Ripple); Base58 output is not interchangeable across alphabets.

Best Practice

When decoding pasted strings from emails/logs, enable "Allow separators/whitespace" and "Accept data:*;base58, prefix" to reduce copy/paste failures.

Security Tip

Enable "Strict validation" when you want to detect wrong alphabets or corrupted Base58 early.

Performance Tip

For large files, avoid batch-running many items at once and keep live preview off; the tool enforces size/time limits (~2MB and ~25000 ms).

CI Tip

In CI, use a pinned library implementation and commit test vectors (input bytes + expected Base58) for each alphabet you support.

Additional Resources

Bitcoin Core: Base58 encoding (developer reference)

Documentation