Due to the nature of Highlight's core product, we keep privacy as our top priority. We've built a few ways to redact/mask certain DOM elements while still preserving the structure of your DOM recording. It is important to note that for both of the below solutions, all data is sanitized on the client, so sensitive data never reaches our servers/platform.

Masking Elements

One way to sanitize your recordings is by adding the highlight-block CSS class to elements that should be ignored.

<div class="highlight-block">Super secret sauce</div>

The Highlight snippet will in-turn measure the dimensions of the ignored element, and when the recording is being replayed, an empty placeholder will replace the content.

Obfuscating Elements

Alternatively, you can obfuscate specific HTML elements by adding the highlight-mask CSS class. The effect is the same of setting enableStrictPrivacy (the randomized text in the photo above) but applies to the specific HTML element that you mask.

<div class="highlight-mask">
	This is some sensitive data <button>Important Button</button>
</div>

Ignoring Input

The following CSS class only works for <input> elements. If you are interested in blocking the capture of other HTML elements, see the highlight-block class

For sensitive input fields that your team would like to ignore user input for, you can add a CSS class highlight-ignore that will preserve the styling of the input element, but ignore all user input.

<input class="highlight-ignore" name="social security number" />

Strict Privacy Mode

If you don't want to manually annotate what elements to not record then you can set enableStrictPrivacy to true when calling H.init(). Strict Privacy Mode will obfuscate all text and images. The text obfuscation is not reversible and is done on the client.

Here are some examples:

• <h1>Hello World</h1> will be recorded as <h1>1f0eqo jw02d</h1>

• <img src="https://my-secrets.com/secret.png" /> will be recorded as <img src="" />

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