Using ms_delay

Adjust rendering delay to capture dynamic content

When to use ms_delay

The ms_delay parameter should only be used when:

1. Your screenshots are missing expected content
2. Dynamic content isn’t appearing in the final image
3. Custom fonts or images aren’t loading properly

How it works

When content is missing from your screenshots, the ms_delay parameter lets you add a delay before capture. This can help with:

• JavaScript that needs time to execute
• Assets (images, fonts) still loading
• Animations not completing
• Dynamic content not appearing

Default behavior

By default, the API intelligently handles most loading scenarios:

• Waits for the page to fully load
• Detects when assets finish loading
• Automatically manages common JavaScript frameworks

Only add ms_delay if you notice issues with the default behavior.

Image credits and billing

Image credit usage

The ms_delay parameter can affect how many image credits are consumed per request:

Important notes

• Maximum allowed value is 20,000ms (20 seconds)
• Values are rounded up to the nearest image credit tier
• Image credits are calculated before the request is processed

Examples

// Standard usage (1 image credit)
{
  "html": "<div>Your content</div>",
  "ms_delay": 3000
}

// 2 image credits used
{
  "html": "<div>Your content</div>",
  "ms_delay": 8000
}

// 4 image credits used (maximum)
{
  "html": "<div>Your content</div>",
  "ms_delay": 20000
}

Alternatives to high ms_delay values

Instead of using high ms_delay values, consider:

1. Using the render_when_ready parameter
2. Optimizing your page load time
3. Preloading assets
4. Reducing JavaScript execution time

This can help reduce both image credit usage and overall processing time.