Transloadit
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EssentialsRobotsFAQAPIFormats
Handling uploads
  • /upload/handle
    Handle uploads
File importing
  • /azure/import
    Import files from Azure
  • /backblaze/import
    Import files from Backblaze
  • /box/import
    Import files from Box
  • /cloudfiles/import
    Import files from Rackspace Cloud Files
  • /cloudflare/import
    Import files from Cloudflare R2
  • /digitalocean/import
    Import files from DigitalOcean Spaces
  • /dropbox/import
    Import files from Dropbox
  • /ftp/import
    Import files from FTP servers
  • /google/import
    Import files from Google Storage
  • /http/import
    Import files from web servers
  • /minio/import
    Import files from MinIO
  • /s3/import
    Import files from Amazon S3
  • /sftp/import
    Import files from SFTP servers
  • /supabase/import
    Import files from Supabase
  • /swift/import
    Import files from Openstack/Swift
  • /tigris/import
    Import files from Tigris
  • /vimeo/import
    Import videos from Vimeo
  • /wasabi/import
    Import files from Wasabi
Video encoding
  • /video/adaptive
    Convert videos to HLS and MPEG-Dash
  • /video/artwork
    Extract or insert video artwork
  • /video/concat
    Concatenate videos
  • /video/encode
    Transcode, resize, or watermark videos
  • /video/merge
    Merge video, audio, images into one video
  • /video/ondemand
    Stream videos with on-demand encoding
  • /video/split
    Split video
  • /video/subtitle
    Add subtitles to videos
  • /video/thumbs
    Extract thumbnails from videos
  • Video presets
Audio encoding
  • /audio/artwork
    Extract or insert audio artwork
  • /audio/concat
    Concatenate audio
  • /audio/split
    Split audio
  • /audio/encode
    Encode audio
  • /audio/loop
    Loop audio
  • /audio/merge
    Merge audio files into one
  • /audio/waveform
    Generate waveform images from audio
  • Audio presets
Image manipulation
  • /image/bgremove
    Remove the background from images
  • /image/merge
    Merge several images into one image
  • /image/optimize
    Optimize images without quality loss
  • /image/resize
    Convert, resize, or watermark images
Artificial intelligence
  • /document/ocr
    Recognize text in documents (OCR)
  • /image/describe
    Recognize objects in images
  • /image/facedetect
    Detect faces in images
  • /image/generate
    Generate images from text prompts
  • /image/upscale
    Upscale images
  • /image/ocr
    Recognize text in images (OCR)
  • /speech/transcribe
    Transcribe speech in audio or video files
  • /text/speak
    Synthesize speech in documents
  • /text/translate
    Translate text in documents
  • /ai/chat
    Generate AI chat responses
  • /video/generate
    Generate videos from text prompts
Document processing
  • /document/autorotate
    Auto-rotate documents
  • /document/convert
    Convert documents into different formats
  • /document/merge
    Merge documents into one
  • /document/optimize
    Optimize PDF file size
  • /file/read
    Read file contents
  • /document/split
    Extracts pages
  • /document/thumbs
    Extract thumbnail images from documents
  • /html/convert
    Take screenshots of webpages or HTML files
File filtering
  • /file/filter
    Filter files
  • /file/verify
    Verify the file type
  • /file/virusscan
    Scan files for viruses
Code evaluation
  • /script/run
    Run scripts in Assemblies
Media cataloging
  • /file/hash
    Hash files
  • /file/preview
    Generate a preview thumbnail
  • /meta/write
    Write metadata to media
File compressing
  • /file/compress
    Compress files
  • /file/decompress
    Decompress archives
File exporting
  • Downloading
  • /azure/store
    Export files to Microsoft Azure
  • /backblaze/store
    Export files to Backblaze
  • /box/store
    Export files to Box
  • /cloudfiles/store
    Export files to Rackspace Cloud Files
  • /cloudflare/store
    Export files to Cloudflare R2
  • /digitalocean/store
    Export files to DigitalOcean Spaces
  • /dropbox/store
    Export files to Dropbox
  • /ftp/store
    Export files to FTP servers
  • /google/store
    Export files to Google Storage
  • /minio/store
    Export files to MinIO
  • /s3/store
    Export files to Amazon S3
  • /sftp/store
    Export files to SFTP servers
  • /supabase/store
    Export files to Supabase
  • /swift/store
    Export files to OpenStack/Swift
  • /tigris/store
    Export files to Tigris
  • /tus/store
    Export files to Tus-compatible servers
  • /vimeo/store
    Export files to Vimeo
  • /wasabi/store
    Export files to Wasabi
  • /youtube/store
    Export files to YouTube
Smart CDN
  • /file/serve
    Serve files to web browsers
  • /tlcdn/deliver
    Cache and deliver files globally
  • Pricing

Recognize objects in images

🤖/image/describe recognizes objects in images and returns them as English words.

You can use the labels that we return in your application to automatically classify images. You can also pass the labels down to other Robots to filter images that contain (or do not contain) certain content.

Usage example

Recognize objects in an uploaded image and store the labels in a JSON file:

{
  "steps": {
    "described": {
      "robot": "/image/describe",
      "use": ":original",
      "provider": "aws"
    }
  }
}

Parameters

  • output_meta

    Record<string, boolean> | boolean | Array<string>

    Allows you to specify a set of metadata that is more expensive on CPU power to calculate, and thus is disabled by default to keep your Assemblies processing fast.

    For images, you can add "has_transparency": true in this object to extract if the image contains transparent parts and "dominant_colors": true to extract an array of hexadecimal color codes from the image.

    For images, you can also add "blurhash": true to extract a BlurHash string — a compact representation of a placeholder for the image, useful for showing a blurred preview while the full image loads.

    For videos, you can add the "colorspace: true" parameter to extract the colorspace of the output video.

    For audio, you can add "mean_volume": true to get a single value representing the mean average volume of the audio file.

    You can also set this to false to skip metadata extraction and speed up transcoding.

  • result

    boolean (default: false)

    Whether the results of this Step should be present in the Assembly Status JSON

  • queue

    batch

    Setting the queue to 'batch', manually downgrades the priority of jobs for this step to avoid consuming Priority job slots for jobs that don't need zero queue waiting times

  • force_accept

    boolean (default: false)

    Force a Robot to accept a file type it would have ignored.

    By default, Robots ignore files they are not familiar with. 🤖/video/encode, for example, will happily ignore input images.

    With the force_accept parameter set to true, you can force Robots to accept all files thrown at them. This will typically lead to errors and should only be used for debugging or combatting edge cases.

  • ignore_errors

    boolean | Array<meta | execute> (default: [])

    Ignore errors during specific phases of processing.

    Setting this to ["meta"] will cause the Robot to ignore errors during metadata extraction.

    Setting this to ["execute"] will cause the Robot to ignore errors during the main execution phase.

    Setting this to true is equivalent to ["meta", "execute"] and will ignore errors in both phases.

  • use

    string | Array<string> | Array<object> | object

    Specifies which Step(s) to use as input.

    • You can pick any names for Steps except ":original" (reserved for user uploads handled by Transloadit)
    • You can provide several Steps as input with arrays:
      {
        "use": [
          ":original",
          "encoded",
          "resized"
        ]
      }
      
    Tip

    That's likely all you need to know about use, but you can view Advanced use cases.

  • provider

    aws | gcp | replicate | fal | transloadit

    Which AI provider to leverage.

    Transloadit outsources this task and abstracts the interface so you can expect the same data structures, but different latencies and information being returned. Different cloud vendors have different areas they shine in, and we recommend to try out and see what yields the best results for your use case.

  • granularity

    full | list (default: "full")

    Whether to return a full response ("full") including confidence percentages for each found label, or just a flat list of labels ("list").

  • format

    json | meta | text (default: "json")

    In what format to return the descriptions.

    • "json" returns a JSON file.
    • "meta" does not return a file, but stores the data inside Transloadit's file object (under ${file.meta.descriptions}) that's passed around between encoding Steps, so that you can use the values to burn the data into videos, filter on them, etc.
  • explicit_descriptions

    boolean (default: false)

    Whether to return only explicit or only non-explicit descriptions of the provided image. Explicit descriptions include labels for NSFW content (nudity, violence, etc). If set to false, only non-explicit descriptions (such as human or chair) will be returned. If set to true, only explicit descriptions will be returned.

    The possible descriptions depend on the chosen provider. The list of labels from AWS can be found in their documentation. GCP labels the image based on five categories, as described in their documentation.

    For an example of how to automatically reject NSFW content and malware, please check out this blog post.

Demos

  • Service to generate a slideshow from AI-filtered images
  • Automatic explicit content detection service
  • Automatic image recognition service

Related blog posts

  • Tech preview: new AI Robots for enhanced media processing February 17, 2020
  • Introducing the OCR Robot for easy text extraction August 26, 2021
  • Celebrating transloadit’s 2021 milestones and progress January 31, 2022
  • Building an alt-text to speech generator with Transloadit May 9, 2022
  • How to automate content moderation using Transloadit (NSFW) July 25, 2022
  • Use Transloadit to automatically filter NSFW images July 17, 2024
← /document/ocr/image/facedetect →
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