# White or blank images

Wait for slow-loading content before capturing your image.

## Why is my image white or blank?

When rendering your image, the API makes its best guess at when your HTML or webpage is ready to be turned into an image.

We do this by waiting for the pages `load` event to fire. We then monitor for additional network traffic (such as external CSS or images) to complete before generating the image. This works well for most cases, but occasionally can cause problems for content that may be slow to load.

## Solution: `ms_delay`

The `ms_delay` parameter gives you more control over when the API generates the image. By setting this, the API will delay the rendering of the image by the number of milliseconds you set. We recommend starting with `500` and increasing from there.

## Solution: `render_when_ready`

The `render_when_ready` param gives you exact control over when the API generates the image. When this is set to true, the API will wait to render the image until a JavaScript function is called, or a special element is added to the page. [Learn more about render\_when\_ready](/parameters/render_when_ready/).

## Need help?

Talk to a human. Email [support@htmlcsstoimage.com](mailto:support@htmlcsstoimage.com) and we’ll help you get started.