# Capture screenshot
Take a screenshot of the active tab’s viewport (i.e. the part that is currently visible on the screen):
1. Add the element `Charles: Screenshot` to the page.
2. Use the action `Charles: Capture Screenshot` to initiate a screenshot
3. Once the screenshot is taken, the event `screenshotCaptured` is triggered. You can use the `Charles: Screenshot`'s states
1. `Screenshot URL` to access an image uploaded to the Bubble CDN. Please use `:saved to S3` to make sure the image is permanently stored. This should be the main way of storing images.
2. `Base64 encoded image` to save a base64 encoded image directly to Bubble’s databse. This can be useful if you need to use any 3rd party APIs that expect a base64 encoded image. Please note that the string contains a prefix: `data:image/png;base64,iVBORw0KGgoAAA…`
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# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://cranford-tech.gitbook.io/charles/key-features/capture-screenshot.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
