ComfyUI > Nodes > Basic data handling > capitalize

ComfyUI Node: capitalize

Class Name

Basic data handling: StringCapitalize

Category
Basic/STRING
Author
StableLlama (Account age: 861days)
Extension
Basic data handling
Latest Updated
2026-05-07
Github Stars
0.04K

How to Install Basic data handling

Install this extension via the ComfyUI Manager by searching for Basic data handling
  • 1. Click the Manager button in the main menu
  • 2. Select Custom Nodes Manager button
  • 3. Enter Basic data handling in the search bar
After installation, click the Restart button to restart ComfyUI. Then, manually refresh your browser to clear the cache and access the updated list of nodes.

Visit ComfyUI Online for ready-to-use ComfyUI environment

  • Free trial available
  • 16GB VRAM to 80GB VRAM GPU machines
  • 400+ preloaded models/nodes
  • Freedom to upload custom models/nodes
  • 200+ ready-to-run workflows
  • 100% private workspace with up to 200GB storage
  • Dedicated Support

Run ComfyUI Online

capitalize Description

Transforms the first character of a string to uppercase and the rest to lowercase for consistency.

capitalize:

The StringCapitalize node is designed to transform the first character of a given string into uppercase while converting all subsequent characters to lowercase. This functionality is particularly useful when you need to standardize text inputs, ensuring that they follow a consistent capitalization format. By using this node, you can easily prepare strings for display or further processing, making them more readable and aesthetically pleasing. The node leverages Python's built-in capitalize() method, which efficiently handles the conversion, ensuring that your text data is formatted correctly with minimal effort.

capitalize Input Parameters:

string

The string parameter is the primary input for the StringCapitalize node. It accepts a string value that you wish to capitalize. The function of this parameter is to provide the text that will undergo the capitalization process. The impact of this parameter on the node's execution is direct, as it determines the content that will be transformed. The default value for this parameter is an empty string (""), which means if no input is provided, the node will return an empty string as well. There are no specific minimum or maximum values for this parameter, as it can handle any string length.

capitalize Output Parameters:

STRING

The output parameter of the StringCapitalize node is a string, denoted as STRING. This output represents the capitalized version of the input string, where the first character is uppercase and all other characters are lowercase. The importance of this output lies in its ability to provide a standardized text format, which can be crucial for applications that require consistent text presentation. The output value is straightforward to interpret, as it directly reflects the transformation applied to the input string.

capitalize Usage Tips:

  • Use the StringCapitalize node when you need to ensure that user inputs or text data are consistently formatted with an initial capital letter, which is especially useful for names or titles.
  • Combine this node with other string manipulation nodes to create complex text processing workflows, such as preparing data for display in user interfaces or reports.

capitalize Common Errors and Solutions:

Empty String Input

  • Explanation: If the input string is empty, the node will return an empty string as output.
  • Solution: Ensure that the input string is not empty if you expect a capitalized result. You can add a check before passing the string to the node.

Non-String Input

  • Explanation: Providing a non-string input will result in an error, as the node expects a string type.
  • Solution: Verify that the input is a valid string before using the node. Convert any non-string data to a string format if necessary.

capitalize Related Nodes

Go back to the extension to check out more related nodes.
Basic data handling
RunComfy
Copyright 2025 RunComfy. All Rights Reserved.

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

capitalize