Transloadit

Audio Encoding. Built for Developers.

Encode, merge, loop, extract artwork, and generate waveforms — all automated in a Simple API.

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Documentation
No credit card needed5 GB included in the free plan
podcast.wav
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Audio Optimization

Compress audio up to 90% while preserving quality with modern codecs.

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Transform with Simple APIs

Convert, merge, and enhance audio files with powerful Robot chains.

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Automate with AI

Transcribe speech, generate audio, and extract metadata automatically.

Industry leaders who use Transloadit
The New York Times logoNVIDIA logoOracle logoWeTransfer logoCoursera logoPwC logoFujitsu logo
Robots

Transform Your Audio

At Transloadit, a Robot is an automated worker that performs a single task in your audio workflow — like extracting cover artwork, encoding audio, or concatenating audio files.
Extract Cover Artwork

Extract embedded cover artwork from audio files.

/audio/artwork

Encode Audio Files

Convert audio files into all kinds of formats. Like MP3, AAC, and more.

/audio/encode

Concatenate Audio Files

Concatenate several audio files together into a single audio file.

/audio/concat

Loop Audio Files

Loop one audio file as often as is required to match a given duration.

/audio/loop

Merge Audio Files

Overlay several audio files on top of each other.

/audio/merge

Generate Waveforms

Generate waveform images for your audio files.

/audio/waveform

Our AI-powered Robots

Transcribe speech in audio files

Transcribe speech to text in audio files.

/speech/transcribe

Convert text into speech

Write text in a document, and have it spoken aloud.

/text/speak

Demo

Build Audio Pipelines by Chaining Robots

Chain Robots together to create end-to-end automated pipelines for audio processing.

Uploading audio…
joakim_karud-rock_angel.wav
Assembly Instructions (JSON)
{
  "steps": {
    ":original": {
      "robot": "/upload/handle"
    },
    "encode_mp3": {
      "use": ":original",
      "robot": "/audio/encode",
      "preset": "mp3",
      "ffmpeg": {
        "ab": "320k",
        "ar": "44100"
      }
    },
    "artwork": {
      "use": "encode_mp3",
      "robot": "/audio/artwork",
      "format": "jpg",
      "width": 280,
      "height": 280
    },
    "waveform": {
      "use": "artwork",
      "robot": "/audio/waveform",
      "width": 280,
      "height": 80
    }
  }
}
Audio format conversion
WAV → MP3
2:44
Audio compression
45 MB → 5.2 MB
1:32
Audio processing speed
850 ms → 120 ms
3:21
Made for Audio at Scale

Audio workflows without the pain

Skip the hassle of encoding, format conversion, and audio processing. Transloadit gives you fast, safe, and cost-effective audio workflows through APIs and SDKs built for production.
Pro codecs

MP3, AAC, WAV, and more with tuned presets, two-pass, and per-title encoding. Get crisp audio at the smallest size.

Faster start

Parallel ingest, turbo transcodes, and instant edge delivery cut startup time across regions.

Secure by default

Signed uploads, scoped credentials, and compliance-aware storage options keep your audio pipelines safe.

Zero infrastructure

No servers to provision or maintain. Our cloud workers auto-scale with your traffic. Just API calls — we handle the rest.

No storage problems

First-class S3, GCS, and Azure support. Originals stay put, results export straight to your buckets.

Simplify development

Typed SDKs, deterministic Assemblies, and flexible Robots. CI-safe audio pipelines you can version-control.

Try Transloadit for free
Testimonials

Loved by Developers Worldwide

Transloadit is used by developers all over the world to handle file processing. Don't take our word for it, see what they have to say.
Dave Perrett
Dave PerrettCTO / Shuttlerock
I'm not usually one for fanboy-ism but Transloadit is one service I would recommend without hesitation. Their product and customer support is outstanding.
Mike ReidDirector of Engineering / Signed
Top notch support — better than top notch.
Elio CapellaHead of Development / Filestage
We wouldn't be able to be here without your support. Your service is the best video transcoding service out there and I'm happy about the reliability.
Jon Wong
Jon WongStaff Software Engineer / Coursera
Having a solution for both uploading and transcoding has been a godsend for the current scale that we are at five years after first choosing Transloadit.
Braden SchaefferLead Engineer / Biginterview
I absolutely love you people. From the support to the technology, performance and APIs... you've taken what could have been the most painful process of my entire development career and turned it into an absolute joy. I cannot thank or recommend you enough.
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Try Transloadit

Try Transloadit for free

Encode any format or resolution on Transloadit's global infrastructure.
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Large audio files slow down processing
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Compress audio with AAC/Opus
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Maintaining multiple versions for different platforms
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Convert to any audio format on demand
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Inconsistent volume across files
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Automatically normalize audio levels
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Manual metadata handling
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Extract & inject metadata automatically
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Background noise reduces audio quality
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Apply audio filters (denoise, equalize) quickly
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Silence or dead air needs trimming
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Automatically detect & trim silence
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Poor playback due to unoptimized encoding
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Encode audio for smooth streaming
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Need to protect sensitive audio
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Alter voices automatically
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Try Transloadit for Free
No credit card needed · 5 GB included in the free plan