> ## Documentation Index > Fetch the complete documentation index at: https://docs.blinkops.com/llms.txt > Use this file to discover all available pages before exploring further. # String Utilities > Utility actions for formatting, parsing, and transforming string data in Blink workflows. ## Byte Truncate String Truncate a string to a specified number of bytes while preserving UTF-8 character boundaries.

| Parameter | Description | | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | String | The input string to truncate. Can be provided with or without quotes. | | Max Bytes | The maximum number of bytes for the truncated string.

Examples:
• `10` - 10 bytes
• `10000` - 10 kb
• `10000000` - 10 mb |

## Convert To Lower Case Converts a string to lower case.

| Parameter | Description | | --------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | String | The string which will be converted to lower case. For example: For the string - `Hello World`, the returned string will be: `hello world` |

## Convert To Upper Case Converts a string to upper case.

| Parameter | Description | | --------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | String | The string which will be converted to upper case. For example: For the string - `Hello World`, the returned string will be: `HELLO WORLD` |

## Find String Returns the index of the first occurrence of a substring within the given string. The action returns -1 if the value is not found.

| Parameter | Description | | --------- | ------------------------------------------------------- | | String | The original string where the `Value` will be searched. | | Substring | The substring to be find within the original `String`. |

## Generate Random String Generates a random string of specified length with the given character sets.

| Parameter | Description | | ----------------------- | ------------------------------------------------------------------------------ | | String Length | The length of the generated string, default 10. | | Include Special Chars | `[!-*]` character set - `!@#$%&*`. | | Include Uppercase Chars | `[A-Z]` character set - `ABCDEFGHIJKLMNOPQRSTUVWXYZ`. | | Include Digit Chars | `[0-9]` character set - `0123456789`. | | Custom Characters | 'Characters that will be appended to character pool. For example: `Bl1#K@p$`.' |

## Get String Length Get length of a string.

## Join String Concatenate any number of strings into a single string using an optional separator. Equivalent to Python's join() method.

| Parameter | Description | | ----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | String List | The list of strings that needs to be concatenated. Also, it could be a single string like `"blink"`. In this case, each character will act as a 'substring'. For example: The input string - `"blink"` (with quotes) will act the same as the following input: `["b", "l", "i", "n", "k"]` | | Separator | The string that will be inserted in between each one of the 'Strings'. For example: For the string list - `["I", "Love", "Blink"]` and the separator - `#`, the returned string will be: `I#Love#Blink` |

## Replace String Replaces a given substring with another string.

| Parameter | Description | | ------------- | ---------------------------------------------------------------------------------- | | String | The original string where replacements will be made. | | Old Substring | The substring to be find within the original `String` parameter. | | New Substring | The replacement substring. | | Count | The maximum number of replacements to perform. If empty, replaces all occurrences. |

## Split String Splits a given string according to the specified delimiter and returns a list of substrings.

| Parameter | Description | | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | String | The string that needs to be split. | | Delimiter | The delimiter based on which the string will be split. For example: For the string - `Hello there, this is Blink's example!` and the delimiter - `,`, the returned list looks like the following: `["Hello there", " this is Blink's example!"]` |

## Trim Spaces Removes all leading and trailing whitespaces from a given string.

| Parameter | Description | | --------- | ------------------------------------ | | String | The string that needs to be trimmed. |

## Trim String Shorten a string from either or both sides, using optional `Start` and `End` indexes. This action is based on Python's array slicing, where the start index is included and the end index is excluded. For example, using the string `blinkops` and the input indexes `0` and `-3`, the output will be: `blink`. The same as if the `End` index was `5`. Additional options: * Use only `Start` to trim from the beginning: `Start: 2` → `inkops` * Use only `End` to trim from the end: `End: 5` → `blink` * Leave both empty to get the full string

| Parameter | Description | | ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | String | The string that needs to be trimmed. | | Start Index | The index of the first character you want to **include** in the slice. The string will be trimmed from this index (inclusive). **Note**: The first character's index is `0`. | | End Index | The index of the first character you want to **exclude** from the slice. The string will be trimmed to this index (exclusive). **Note**: The last character's index is `-1` or the length of the string. |

## Truncate String Shortens a given string to a limited number of characters.

| Parameter | Description | | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | String | The string that will be shortened. | | Limit | The amount of characters the string will be limited to. For example: For the string - `Hello World` and the limit `8`, the returned value will be: `Hello Wo`
**Note**: You can truncate the string from the end using a `Negative Limit`. For instance: the limit `-2` will remove the last 2 characters. |