# Take a scrolling screenshot of a website automatically (by using a URL)

Transloadit can take a scrolling screenshot of any website or HTML file. In this demo below we let[🤖/html/convert](/docs/robots/html-convert.md) take a PNG screenshot from the[Uppy website⁠](https://uppy.io).

We then feed this screenshot into [🤖/video/merge](/docs/robots/video-merge.md), and use the `scroll`FFmpeg parameter to automatically generate a video that slowly pans down the screenshot we took.

To achieve this effect we use the `scroll` filter, to animate the image moving down. The value of`v` determines how fast the image will scroll. After this, we use the `crop` filter to define the size of our "viewbox".

Step 1

### Take screenshots of webpages or HTML files

We can process your documents in an automated way, saving you costly resources. [Learn more ›](/services/document-processing.md)

![tus-io.png](https://demos.transloadit.com/8f/a1b5bd98ad49daa2ae9267cc5c417b/tus-io.png)

[tus-io.png](https://demos.transloadit.com/8f/a1b5bd98ad49daa2ae9267cc5c417b/tus-io.png)

Image · 285 KB · 1024 × 3000

```
"screenshot": {
  "robot": "/html/convert",
  "result": true,
  "format": "png",
  "fullpage": false,
  "height": 3000,
  "url": "https://tus.io/",
  "width": 1024
}
```

🤖 [/html/convert](/docs/robots/html-convert.md)

This bot takes screenshots of web pages or uploaded HTML pages

Step 2

### Merge video, audio, images into one video

We offer a variety of video encoding features like optimizing for different devices, merging, injecting ads, changing audio tracks, or adding company logos. [Learn more ›](/services/video-encoding.md)

[tus-io.mp4](https://demos.transloadit.com/84/ecacff02ad49d8a8fa6994dff94f7e/tus-io.mp4)

Video · 433 KB · 20s · 1024 × 720

```
"scroll": {
  "use": {
    "steps": [
      {
        "name": "screenshot",
        "as": "image"
      }
    ]
  },
  "robot": "/video/merge",
  "result": true,
  "duration": 20,
  "ffmpeg": {
    "r": 30,
    "vf": "scroll=v=0.001,crop=1024:720:0:0",
    "f": "mp4",
    "pix_fmt": "yuv420p"
  },
  "ffmpeg_stack": "v7",
  "preset": "empty"
}
```

🤖 [/video/merge](/docs/robots/video-merge.md)

This bot composes a new video by adding an audio track to existing still image(s) or video

Step 3

### Export files to Amazon S3

We export to the storage platform of your choice. [Learn more ›](/services/file-exporting.md)

`screenshot`

* [https://demos.transloadit.com/8f/a1b5bd98ad49daa2ae9267cc5c417b/tus-io.png⁠](https://demos.transloadit.com/8f/a1b5bd98ad49daa2ae9267cc5c417b/tus-io.png)

`scroll`

* [https://demos.transloadit.com/84/ecacff02ad49d8a8fa6994dff94f7e/tus-io.mp4⁠](https://demos.transloadit.com/84/ecacff02ad49d8a8fa6994dff94f7e/tus-io.mp4)

```
"exported": {
  "use": [
    "screenshot",
    "scroll",
    ":original"
  ],
  "robot": "/s3/store",
  "credentials": "demo_s3_credentials",
  "url_prefix": "https://demos.transloadit.com/"
}
```

🤖 [/s3/store](/docs/robots/s3-store.md)

This bot exports encoding results to Amazon S3

## Live Demo. See for yourself

Loading Uppy demo…

## Build this in your own language

```
<!-- This pulls Uppy from our CDN -->
<!-- For smaller self-hosted bundles, install Uppy and plugins manually: -->
<!-- npm i --save @uppy/core @uppy/dashboard @uppy/remote-sources @uppy/transloadit ... -->
<link
  href="https://releases.transloadit.com/uppy/v3.10.0/uppy.min.css"
  rel="stylesheet"
/>
<button id="browse">Select Files</button>
<script type="module">
  import {
    Uppy,
    Dashboard,
    ImageEditor,
    RemoteSources,
    Transloadit,
  } from 'https://releases.transloadit.com/uppy/v3.10.0/uppy.min.mjs'
  const uppy = new Uppy()
    .use(Transloadit, {
      waitForEncoding: true,
      alwaysRunAssembly: true,
      assemblyOptions: {
        params: {
          // It's often better store encoding instructions in your account
          // and use a `template_id` instead of adding these steps inline
          steps: {
            screenshot: {
              robot: '/html/convert',
              result: true,
              format: 'png',
              fullpage: false,
              height: 3000,
              url: 'https://tus.io/',
              width: 1024,
            },
            scroll: {
              use: {
                steps: [{
                  name: 'screenshot',
                  as: 'image',
                }],
              },
              robot: '/video/merge',
              result: true,
              duration: 20,
              ffmpeg: {
                r: 30,
                vf: 'scroll=v=0.001,crop=1024:720:0:0',
                f: 'mp4',
                pix_fmt: 'yuv420p',
              },
              ffmpeg_stack: 'v7',
              preset: 'empty',
            },
            exported: {
              use: ['screenshot', 'scroll', ':original'],
              robot: '/s3/store',
              credentials: 'demo_s3_credentials',
              url_prefix: 'https://demos.transloadit.com/',
            },
          },
        },
      },
    })
    .use(Dashboard, { trigger: '#browse' })
    .use(ImageEditor, { target: Dashboard })
    .use(RemoteSources, {
      companionUrl: 'https://api2.transloadit.com/companion',
    })
    .on('complete', ({ transloadit }) => {
      // Due to `waitForEncoding:true` this is fired after encoding is done.
      // Alternatively, set `waitForEncoding` to `false` and provide a `notify_url`
      console.log(transloadit) // Array of Assembly Statuses
      for (const assembly of transloadit) {
        console.log(assembly.results) // Array of all encoding results
      }
    })
    .on('error', (error) => {
      console.error(error)
    })
</script>

```

[Read docs: Browsers](/docs/sdks/uppy.md)

## So many ways to integrate

Transloadit is a service for companies with developers. And there are many ways developers can put Transloadit to good use inside your company to automate media processing.

#### Bulk imports

Add one of our [import Robots](/services/file-importing.md) to acquire and transcode massive media libraries.

#### Handling uploads

We are *the* experts at reliably [handling uploads](/services/handling-uploads.md). We wrote the [protocol⁠](https://tus.io/) for it.

#### Front-end integration

We integrate with web browsers via our next-gen file uploader [Uppy⁠](https://uppy.io/docs/guides/uppy-transloadit/) and SDKs for Android and iOS.

#### Back-end integration

Send us batch jobs in any server language using one of our [SDKs](/docs/sdks.md) or directly interfacing with our [REST API](/docs/api.md).

#### Pingbacks

Configure a [notify\_url](/services/content-delivery.md) to let your server receive transcoding results JSON in the `transloadit` POST field.

#### On-demand

Use our [Smart CDN](/services/file-importing.md) to adapt files on-demand and stream them directly to your users.

[Browsers](/docs/sdks/uppy.md)[TransloaditKit](/docs/sdks/transloaditkit.md)[Ruby SDK](/docs/sdks/ruby-sdk.md)[HTTP REST API](/docs/api.md)[Python SDK](/docs/sdks/python-sdk.md)[PHP SDK](/docs/sdks/php-sdk.md)[Node.js SDK](/docs/sdks/node-sdk.md)[Java SDK](/docs/sdks/java-sdk.md)[Go SDK](/docs/sdks/go-sdk.md)[cURL](/docs/sdks/curl.md)[Convex](/docs/sdks/convex.md)

[Browsers](/docs/sdks/uppy.md)[TransloaditKit](/docs/sdks/transloaditkit.md)[Ruby SDK](/docs/sdks/ruby-sdk.md)[HTTP REST API](/docs/api.md)[Python SDK](/docs/sdks/python-sdk.md)[PHP SDK](/docs/sdks/php-sdk.md)[Node.js SDK](/docs/sdks/node-sdk.md)[Java SDK](/docs/sdks/java-sdk.md)[Go SDK](/docs/sdks/go-sdk.md)[cURL](/docs/sdks/curl.md)[Convex](/docs/sdks/convex.md)

[Browsers](/docs/sdks/uppy.md)[TransloaditKit](/docs/sdks/transloaditkit.md)[Ruby SDK](/docs/sdks/ruby-sdk.md)[HTTP REST API](/docs/api.md)[Python SDK](/docs/sdks/python-sdk.md)[PHP SDK](/docs/sdks/php-sdk.md)[Node.js SDK](/docs/sdks/node-sdk.md)[Java SDK](/docs/sdks/java-sdk.md)[Go SDK](/docs/sdks/go-sdk.md)[cURL](/docs/sdks/curl.md)[Convex](/docs/sdks/convex.md)

## Other cool demos

* [View demo→Document ProcessingAdd a header or footer to a PDF](/demos/document-processing/add-header-or-footer-to-pdf.md)
* [View demo→Document ProcessingConvert all pages of a document into an animated GIF](/demos/document-processing/convert-all-pages-of-a-document-into-an-animated-gif.md)
* [View demo→Image ProcessingAdd a sepia effect to an image](/demos/image-processing/add-sepia-effect-to-an-image.md)

Try Transloadit

## Ready to get started?

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Building file processing from scratch

Ready-to-use API & SDKs

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Always up-to-date processing

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Supporting all file formats

1000+ formats & codecs supported

Fragmented media tooling

One API for file workflows

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