Bytes to Hex

Category: Data Conversion & Encoding · Node Type ID: converter-bytes-to-hex

Encodes raw byte array into hexadecimal string representation

Overview

Encodes a raw byte array (Uint8Array) into a human-readable hexadecimal string (base-16, 2 hex digits per byte). You can customize the output formatting with lowercase or uppercase hex digits, an optional 0x prefix, and an optional byte delimiter (none, space, or colon).

If a non-Bytes value is connected in an untyped flow, the engine converts it via toBytesAuto before formatting.

When to Use

Formatting binary ciphertexts, hashes, MAC tags, or public keys as hex strings for display, logging, or string comparison.
Producing colon-separated MAC/fingerprint strings (aa:bb:cc:...) or space-separated hex dumps (aa bb cc ...).

Parameter Configuration

Parameter (ID)	Type & Default	Visibility Condition	Description & Options
Letter Case `case`	`select` Default: `lower`	Always visible	Selects lowercase (`0-9a-f`) or uppercase (`0-9A-F`) hexadecimal digits. `lower`: Lowercase (0-9, a-f) `upper`: Uppercase (0-9, A-F)
Prefix 0x `prefix0x`	`boolean` Default: `false` Supports Variable Reference (`$var`: `bool`)	Always visible	When enabled (`true`), prepends `0x` to the resulting hexadecimal string.
Delimiter `separator`	`select` Default: `none`	Always visible	Character inserted between adjacent bytes: `none` (continuous hex), `space` (`" "`), or `colon` (`":"`). `none`: None (aabbcc) `space`: Space (aa bb cc) `colon`: Colon (aa:bb:cc)

Port I/O Specification

See Ports & Connections for general wiring rules, data type colors, and dynamic port creation.

Input Ports

Port Nature: Fixed Input Ports (1 total).

Port Name	Port ID	Data Type	Required	Visibility Condition	Description
`Bytes In`	`bytes`	`Bytes`	Required	Always visible	Raw byte array (`Uint8Array`) to encode.

Output Ports

Port Nature: Fixed Output Ports (1 total).

Port Name	Port ID	Data Type	Visibility Condition	Description
`Hex Out`	`string`	`String`	Always visible	Formatted hexadecimal string representation.

Error Cases

This node has no runtime failure cases (errorProfile: none) and always succeeds for any valid typed input.

Examples

Formatting a SHA-256 Digest as Uppercase Colon-Separated Fingerprint

Display a 32-byte hash in certificate fingerprint style.

Connect the Digest output of Hash Digest to the Bytes input of Bytes to Hex.
Set Letter Case to Uppercase (0-9, A-F) and Delimiter to Colon (aa:bb:cc).