Rendless allows you to generate images with dynamic content like text, images, colors, using variables. You can use variables in the template editor to define dynamic content that will be replaced when rendering the image.

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Variables syntax

Variables are defined in the template editor using the following syntax: {{variable_name}} For example, you can define a variable for the name of a person like this: {{name}} You can use variables in the text diretly or in the properties inputs of the elements.

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Using variables in the API

When generating an image using the API, you need to provide the values for the variables in the query parameters. For example, if you have a variable name in your template, you can provide the value for the variable like this: 
https://rendless.com/api/simple-url/TEMPLATE_ID?name=John
Don’t forget to encode the values in the query parameters. You can use the encodeURIComponent() function in JavaScript or the urlencode() function in PHP.

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Variables limitations

Some varaibles won’t work because they are reserved for the API or the template editor. Here is the table list of reserved variables:
Variable nameDescription
templateIdTemplate id used to generate an image