HTML Is Valid
Checks that every tag in an HTML text is properly closed and nested. The step fails when it is not.
The Is Valid action in the HTML folder checks that the tags of an HTML text are properly closed and correctly nested, for example before you send the HTML as an email body or convert it to PDF. It has no output: the step succeeds when the HTML is valid and fails when it is not, with the line and column of each problem.
Add the action
In the Process Designer toolbox, open HTML and pick Is Valid. The JSON, XML and PDF folders each have an action with the same name, so check the folder.
Inputs and outputs
| Field | Direction | Type | Required | What to put / what you get |
|---|---|---|---|---|
| HTML input | Input | Text | Yes | The HTML text to check. |
The action has no output. The result is the step status.
What happens
| HTML input | Step result |
|---|---|
<div><p>Hello</p><br></div> | Succeeds |
<p>Line<br>Next</p><img src="a.png"> | Succeeds (empty elements such as <br> and <img> need no closing tag) |
plain text | Succeeds |
<div><p>Hello</div> | Fails: HTML is not valid. Validation Errors: Error at Line 1, Column 5 - End tag </p> was not found |
<div><p>Hello | Fails and lists both problems: End tag </div> was not found and End tag </p> was not found |
| empty | Fails: HTML input is null. |
Good to know
- The check covers closing and nesting of tags only. It does not check attribute names, required elements such as
<html>or<title>, or accessibility. - Connect the action's error port if invalid HTML should not stop the process.
- HTML To JSON runs the same check before converting.