We are a Swiss Army knife for your files

Transloadit is a service for companies with developers. We handle file uploads and media processing for them. This way they can save on development-time and heavy machinery that’s required to handle big volumes in an automated way.

We pioneered with this concept in 2009 and have made our customers happy ever since. We’re still actively improving our service in 2017, as well as our open source projects uppy.io and tus.io, that are changing how the world does file uploading.

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Generate a waveform image from an audio file

Transloadit can generate waveform images from audio files. In addition to changing the dimensions and background color of the waveform image, you can also adjust the colors of the gradient that is used on the waveform visualization. If you rather have a JSON representation, set the format: "json" parameter.

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1. Receive files sent by users or apps

Transloadit can handle uploads of your users directly. Learn more ›

joakim_karud-rock_angel.mp3
9.3 MB · 3m 53.2s · Rock Angel by Joakim Karud

We handle uploads that your users throw at you from browser or apps, or that you throw at us programatically:

tl.addFile('file', './joakim_karud-rock_angel.mp3')

2. Generate waveform images from audio

Transloadit offers a variety of features to reduce audio size while maintaining quality, as well as add effects like loops or watermarks. Learn more ›

joakim_karud-rock_angel-0.png
11 KB · 1364 × 410
waveformed: {
  use: [':original'],
  robot: '/audio/waveform',
  background_color: 'ffffffff',
  center_color: '1974c7aa',
  format: 'image',
  height: 410,
  outer_color: '1974c7aa',
  width: 1364,
}
/audio/waveform Robot
This bot generates waveform images for your audio files and allows you to change their colors and dimensions

3. Export files to Amazon S3

Transloadit is happy to export to whatever storage solution suits you best. Learn more ›

exported: {
  use: ['waveformed',':original'],
  robot: '/s3/store',
  bucket: 'demos.transloadit.com',
  bucket_region: 'us-east-1',
  key: 'YOUR_AWS_KEY',
  secret: 'YOUR_AWS_SECRET',
}
/s3/store Robot
This bot exports encoding results to Amazon S3
Since this is a store robot, be sure to use Templates so that any credentials are encrypted and stored in our database, making sure that they’re never exposed to any end-user.

Try it yourself

This live demo is powered by Uppy, our open source file uploader that you can also use without Transloadit, and tus, our open protocol for resumable file uploads that is making uploading more reliable across the world.

Full code used

This demo uses :original, a magic word to identify uploads that Transloadit accepted.

{
  "steps": {
    "waveformed": {
      "use": [":original"],
      "robot": "/audio/waveform",
      "result": true,
      "background_color": "ffffffff",
      "center_color": "1974c7aa",
      "format": "image",
      "height": 410,
      "outer_color": "1974c7aa",
      "width": 1364
    },
    "exported": {
      "use": ["waveformed", ":original"],
      "robot": "/s3/store",
      "bucket": "demos.transloadit.com",
      "bucket_region": "us-east-1",
      "key": "YOUR_AWS_KEY",
      "secret": "YOUR_AWS_SECRET"
    }
  }
}
// Add 'Transloadit' to your Podfile, run `pod install`, add credentials to `Info.plist`
import Arcane
import TransloaditKit

// Assembly Steps
var AssemblySteps: Array = Array<Step>() // An array to hold the Steps

var Step1 = Step (key: "waveformed") // Create a Step object
Step1?.setValue([":original"], forOption: "use") // Add the details
Step1?.setValue("/audio/waveform", forOption: "robot") // Add the details
Step1?.setValue(true, forOption: "result") // Add the details
Step1?.setValue("ffffffff", forOption: "background_color") // Add the details
Step1?.setValue("1974c7aa", forOption: "center_color") // Add the details
Step1?.setValue("image", forOption: "format") // Add the details
Step1?.setValue(410, forOption: "height") // Add the details
Step1?.setValue("1974c7aa", forOption: "outer_color") // Add the details
Step1?.setValue(1364, forOption: "width") // Add the details
AssemblySteps.append(Step1) // Add the Step to the array

var Step2 = Step (key: "exported") // Create a Step object
Step2?.setValue(["waveformed",":original"], forOption: "use") // Add the details
Step2?.setValue("/s3/store", forOption: "robot") // Add the details
Step2?.setValue("demos.transloadit.com", forOption: "bucket") // Add the details
Step2?.setValue("us-east-1", forOption: "bucket_region") // Add the details
Step2?.setValue("YOUR_AWS_KEY", forOption: "key") // Add the details
Step2?.setValue("YOUR_AWS_SECRET", forOption: "secret") // Add the details
AssemblySteps.append(Step2) // Add the Step to the array

// We then create an Assembly Object with the Steps and files
var TestAssembly: Assembly = Assembly(steps: AssemblySteps, andNumberOfFiles: 1)
// Add files to upload
TestAssembly.addFile("./joakim_karud-rock_angel.mp3") // Add the file)

// Create the Assembly
Transloadit.createAssembly(TestAssembly) 

// Fires after your Assembly has completed
transloadit.assemblyStatusBlock = {(_ completionDictionary: [AnyHashable: Any]) -> Void in
  print("\(completionDictionary.description)")
}
<body>
  <form action="/uploads" enctype="multipart/form-data" method="POST">
    <input type="file" name="my_file" multiple="multiple" />
  </form>

  <script src="//ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
  <script src="//assets.transloadit.com/js/jquery.transloadit2-v3-latest.js"></script>
  <script type="text/javascript">
  $(function() {
    $('form').transloadit({
      wait: true,
      triggerUploadOnFileSelection: true,
      params: {
        auth: {
          // Secure via: https://transloadit.com/docs/api-docs/#authentication
          key: 'YOUR_TRANSLOADIT_KEY',
        },
        // It's often better to use a `template_id` than to
        // inline encoding instructions here:
        steps: {
          waveformed: {
            use: [':original'],
            robot: '/audio/waveform',
            result: true,
            background_color: 'ffffffff',
            center_color: '1974c7aa',
            format: 'image',
            height: 410,
            outer_color: '1974c7aa',
            width: 1364
          },
          exported: {
            use: ['waveformed',':original'],
            robot: '/s3/store',
            bucket: 'demos.transloadit.com',
            bucket_region: 'us-east-1',
            key: 'YOUR_AWS_KEY',
            secret: 'YOUR_AWS_SECRET'
          }
        }
      }
    });
  });
  </script>
</body>
<link href="https://unpkg.com/uppy/dist/uppy.min.css" rel="stylesheet">
<script src="https://unpkg.com/uppy/dist/uppy.min.js"></script>
<button id="uppy-open-modal">Select Files</button>
<script>
  const uppy = Uppy.Core({ debug: true, autoProceed: false })
    .use(Uppy.Tus10, { resume: false })
    .use(Uppy.Transloadit, {
      params: {
        auth: {
          key: 'YOUR_TRANSLOADIT_KEY',
        },
        steps: {
          waveformed: {
            use: [':original'],
            robot: '/audio/waveform',
            result: true,
            background_color: 'ffffffff',
            center_color: '1974c7aa',
            format: 'image',
            height: 410,
            outer_color: '1974c7aa',
            width: 1364
          },
          exported: {
            use: ['waveformed',':original'],
            robot: '/s3/store',
            bucket: 'demos.transloadit.com',
            bucket_region: 'us-east-1',
            key: 'YOUR_AWS_KEY',
            secret: 'YOUR_AWS_SECRET'
          }
        }
      },
      waitForEncoding: true,
    })
    .use(Uppy.Dashboard, {
      trigger: '#uppy-open-modal',
      target: 'body'
    })
    .use(Uppy.Webcam, { target: Dashboard })
    .on('transloadit:result', (stepName, result) => {
      // use transloadit encoding result here.
      console.log('Result here ====>', stepName, result)
    })
    .run()
</script>
// npm install transloadit --save
const TransloaditClient = require('transloadit')

const transloadit = new TransloaditClient({
  authKey: 'YOUR_TRANSLOADIT_KEY',
  authSecret: 'YOUR_TRANSLOADIT_SECRET'
})

transloadit.addFile('myfile_1', './joakim_karud-rock_angel.mp3')

const options = {
  params: {
    steps: {
      waveformed: {
        use: [':original'],
        robot: '/audio/waveform',
        result: true,
        background_color: 'ffffffff',
        center_color: '1974c7aa',
        format: 'image',
        height: 410,
        outer_color: '1974c7aa',
        width: 1364
      },
      exported: {
        use: ['waveformed',':original'],
        robot: '/s3/store',
        bucket: 'demos.transloadit.com',
        bucket_region: 'us-east-1',
        key: 'YOUR_AWS_KEY',
        secret: 'YOUR_AWS_SECRET'
      }
    }
  }
}

transloadit.createAssembly(options, (err, result) => {
  if (err) {
    throw err
  }

  console.log({result})
})
npm install transloadify -g

echo '{
  "waveformed": {
    "use": [":original"],
    "robot": "/audio/waveform",
    "result": true,
    "background_color": "ffffffff",
    "center_color": "1974c7aa",
    "format": "image",
    "height": 410,
    "outer_color": "1974c7aa",
    "width": 1364
  },
  "exported": {
    "use": ["waveformed",":original"],
    "robot": "/s3/store",
    "bucket": "demos.transloadit.com",
    "bucket_region": "us-east-1",
    "key": "YOUR_AWS_KEY",
    "secret": "YOUR_AWS_SECRET"
  }
}' > ./steps.json

export TRANSLOADIT_KEY="YOUR_TRANSLOADIT_KEY"
export TRANSLOADIT_SECRET="YOUR_TRANSLOADIT_SECRET"

transloadify \
  --input ./lolcat.jpg \
  --output ./resized-lolcat.jpg \
  --steps ./steps.json
// Install "transloadit/php-sdk"
// via Composer (https://getcomposer.org)
use transloadit\Transloadit;
$transloadit = new Transloadit([
  "key" => "YOUR_TRANSLOADIT_KEY",
  "secret" => "YOUR_TRANSLOADIT_SECRET",
]);

$files = [];
array_push($files, "./joakim_karud-rock_angel.mp3");

$response = $transloadit->createAssembly([
  "files" => $files,
  "params" => [
    "steps" => [
      "waveformed" => [
        "use" => [":original"],
        "robot" => "/audio/waveform",
        "result" => true,
        "background_color" => "ffffffff",
        "center_color" => "1974c7aa",
        "format" => "image",
        "height" => 410,
        "outer_color" => "1974c7aa",
        "width" => 1364,
      ],
      "exported" => [
        "use" => ["waveformed",":original"],
        "robot" => "/s3/store",
        "bucket" => "demos.transloadit.com",
        "bucket_region" => "us-east-1",
        "key" => "YOUR_AWS_KEY",
        "secret" => "YOUR_AWS_SECRET",
      ],
    ],
  ],
]);
# gem install transloadit
transloadit = Transloadit.new(
  :key => "YOUR_TRANSLOADIT_KEY",
  :secret => "YOUR_TRANSLOADIT_SECRET"
)

waveformed = transloadit.step "waveformed", "/audio/waveform",
  :use => [":original"],
  :result => true,
  :background_color => "ffffffff",
  :center_color => "1974c7aa",
  :format => "image",
  :height => 410,
  :outer_color => "1974c7aa",
  :width => 1364
)
exported = transloadit.step "exported", "/s3/store",
  :use => ["waveformed",":original"],
  :bucket => "demos.transloadit.com",
  :bucket_region => "us-east-1",
  :key => "YOUR_AWS_KEY",
  :secret => "YOUR_AWS_SECRET"
)

assembly = transloadit.assembly(
  :steps => [ waveformed, exported ]
)

files = []
files.push("./joakim_karud-rock_angel.mp3")

response = assembly.create! *files

until response.finished?
  sleep 1; response.reload!
end

if !response.error?
  # handle success
end
# pip install pytransloadit
from transloadit import client

tl = client.Transloadit('YOUR_TRANSLOADIT_KEY', 'YOUR_TRANSLOADIT_SECRET')
assembly = tl.new_assembly()

# Add files to upload
assembly.add_file(open('./joakim_karud-rock_angel.mp3', 'rb'))

# Add instructions, e.g. resize image, or encode video
assembly.add_step('waveformed', {
  'use': [':original'],
  'robot': '/audio/waveform',
  'result': true,
  'background_color': 'ffffffff',
  'center_color': '1974c7aa',
  'format': 'image',
  'height': 410,
  'outer_color': '1974c7aa',
  'width': 1364
})
assembly.add_step('exported', {
  'use': ['waveformed',':original'],
  'robot': '/s3/store',
  'bucket': 'demos.transloadit.com',
  'bucket_region': 'us-east-1',
  'key': 'YOUR_AWS_KEY',
  'secret': 'YOUR_AWS_SECRET'
})

# Start the Assembly
assembly_response = assembly.create(retries=5, wait=True)

print assembly_response.data.get('assembly_id')

# or
print assembly_response.data['assembly_id']
// go get gopkg.in/transloadit/go-sdk.v1
options := transloadit.DefaultConfig
options.AuthKey = "YOUR_TRANSLOADIT_KEY"
options.AuthSecret = "YOUR_TRANSLOADIT_SECRET"
client := transloadit.NewClient(options)

// Initialize new assembly
assembly := transloadit.NewAssembly()

// Add files to upload
assembly.AddFile("myfile_1", "./joakim_karud-rock_angel.mp3")

// Add instructions, e.g. resize image, or encode video
assembly.AddStep("waveformed", map[string]interface{}{
  "use": [":original"],
  "robot": "/audio/waveform",
  "result": true,
  "background_color": "ffffffff",
  "center_color": "1974c7aa",
  "format": "image",
  "height": 410,
  "outer_color": "1974c7aa",
  "width": 1364
})
assembly.AddStep("exported", map[string]interface{}{
  "use": ["waveformed",":original"],
  "robot": "/s3/store",
  "bucket": "demos.transloadit.com",
  "bucket_region": "us-east-1",
  "key": "YOUR_AWS_KEY",
  "secret": "YOUR_AWS_SECRET"
})

// Start the Assembly
info, err := client.StartAssembly(context.Background(), assembly)
if err != nil {
  panic(err)
}

// All files have now been uploaded and the assembly has started but no
// results are available yet since the conversion has not finished.
// WaitForAssembly provides functionality for polling until the assembly
// has ended.
info, err = client.WaitForAssembly(context.Background(), info)
if err != nil {
  panic(err)
}

fmt.Printf("You can view the result at: %s\n", info.Results["resize"][0].SSLURL)
// compile 'com.transloadit.sdk:transloadit:0.0.3'
import com.transloadit.sdk.Assembly;
import com.transloadit.sdk.Transloadit;
import com.transloadit.sdk.exceptions.LocalOperationException;
import com.transloadit.sdk.exceptions.RequestException;
import com.transloadit.sdk.response.AssemblyResponse;

import java.io.File;
import java.util.HashMap;
import java.util.Map;

public class Main {
    public static void main(String[] args) {
        Transloadit transloadit = new Transloadit("YOUR_TRANSLOADIT_KEY", "YOUR_TRANSLOADIT_SECRET");
        Assembly assembly = transloadit.newAssembly();
        
        Map<String, Object> waveformedStepOptions = new HashMap<>();
        waveformedStepOptions.put("use", new String[]{ ":original" });
        waveformedStepOptions.put("result", true);
        waveformedStepOptions.put("background_color", "ffffffff");
        waveformedStepOptions.put("center_color", "1974c7aa");
        waveformedStepOptions.put("format", "image");
        waveformedStepOptions.put("height", 410);
        waveformedStepOptions.put("outer_color", "1974c7aa");
        waveformedStepOptions.put("width", 1364);
        assembly.addStep("waveformed", "/audio/waveform", waveformedStepOptions);
        
        Map<String, Object> exportedStepOptions = new HashMap<>();
        exportedStepOptions.put("use", new String[]{ "waveformed", ":original" });
        exportedStepOptions.put("bucket", "demos.transloadit.com");
        exportedStepOptions.put("bucket_region", "us-east-1");
        exportedStepOptions.put("key", "YOUR_AWS_KEY");
        exportedStepOptions.put("secret", "YOUR_AWS_SECRET");
        assembly.addStep("exported", "/s3/store", exportedStepOptions);
        
        assembly.addFile(new File("./joakim_karud-rock_angel.mp3"));
        
        try {
            AssemblyResponse response = assembly.save();

            // wait for assembly to finish executing.
            while (!response.isFinished()) {
                response = transloadit.getAssemblyByUrl(response.getSslUrl());
            }

            System.out.println(response.getId());
            System.out.println(response.getUrl());
            System.out.println(response.json());
        } catch (RequestException | LocalOperationException e) {
            // handle exception here
        }
    }
}

So many ways to integrate

Transloadit is a service for companies with developers. As a developer, there are many ways you can put us to good use.
  • Bulk imports

    Add one of our import Robots to acquire and transcode massive media libraries.
  • Handling uploads

    We are the experts at reliably handling uploads. We wrote the protocol for it.
  • Front-end integration

    We integrate with web browsers via our next-gen file uploader Uppy and SDKs for Android and iOS.
  • Backend integration

    Send us batch jobs in any server language using one of our SDKs or directly interfacing with our REST API.
  • Pingbacks

    Configure a notify_url to let your server receive transcoding results JSON in the transloadit POST field.

Try it in your account

Try out this demo in your own account by pasting it into one of your Templates.

Get started for free

  • Free plan with 2 GB encoding credit
  • Set monthly spending limits
  • Try without a credit card
  • Highly available, globally distributed platform
  • Cancel at any time
  • Costs displayed for each upload/conversion
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