What is the difference between Z85 and RFC 1924 Base85?

They use different Base85 alphabets. Select the variant that matches the format expected by your system.

Which input encodings are supported?

The tool accepts UTF-8 text, hexadecimal bytes, and Base64 bytes.

Which output encodings are supported?

Results can be shown as UTF-8, hexadecimal, or Base64, depending on the selected operation.

How does batch mode work?

Select One per line to encode or decode each input line independently.

What is required for a custom alphabet?

A custom alphabet must contain exactly 85 unique printable ASCII characters.

Elysia Tools

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Format Conversion

Z85 RFC 1924 Base85 Stream Encoder Decoder

Encode or decode bytes with ZeroMQ Z85, RFC 1924 Base85 or a validated custom alphabet in single or line-batch mode

Details

What this tool helps you do

Keeps Z85 and the RFC 1924 alphabet stream variant distinct, validates custom 85-character alphabets, supports UTF-8/hex/base64 byte views and reports partial-block padding.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Prepared example runs

Click an example to fill the form automatically. File inputs still need an upload.

2 examples

Encode bytes with Z85

Encode four bytes from hex using the ZeroMQ Z85 alphabet with strict block validation.

Z85 encoded text

Decode RFC 1924 Base85

Decode an RFC 1924 block and inspect the resulting bytes as hex.

Decoded hexadecimal bytes

Inputs

Set the required fields, then run the tool.

8 options

ContentPaste or type the main input values.2

InputtextareaRequiredCustom AlphabettextareaOptional

SettingsAdjust formats, ranges, numbers, and modes.5

OperationselectOptionalVariantselectOptionalInput EncodingselectOptionalOutput EncodingselectOptionalBatch ModeselectOptional

TogglesEnable or disable optional behavior.1

Strict Block LengthcheckboxOptionalEnabled when checked

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

Z85 RFC 1924 Base85 Stream Encoder Decoder

What this tool helps you do

Run this tool

Prepared example runs

Inputs

Result

Examples that match this tool

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Prepared example runs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Encode hexadecimal bytes with Z85

2. Decode an RFC 1924 Base85 block as hexadecimal

FAQ

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