Ruby integration for Uploadcare

Uploadcare Ruby integration handles uploads and further operations with files by wrapping Upload and REST APIs.

• Installation
• Usage
  • Uploading files
    • Uploading and storing a single file
    • Multiple ways to upload files
    • Uploading options
  • File management
    • File
    • FileList
    • Pagination
    • Custom File Metadata
    • Group
    • GroupList
    • Webhook
    • Add-Ons
    • Project
    • Conversion
• Useful links

Requirements

• ruby 3.0+

Compatibility

Note that uploadcare-ruby 3.x is not backward compatible with 2.x.

Installation

Add this line to your application's Gemfile:

gem "uploadcare-ruby"

And then execute:

$ bundle

If you use api_struct gem in your project, replace it with uploadcare-api_struct:

gem 'uploadcare-api_struct'

and run bundle install

If already not, create your project in Uploadcare dashboard and copy its API keys from there.

Set your Uploadcare keys in config file or through environment variables:

export UPLOADCARE_PUBLIC_KEY=your_public_key
export UPLOADCARE_SECRET_KEY=your_private_key

Or configure your app yourself if you are using different way of storing keys. Gem configuration is available in Uploadcare.configuration. Full list of settings can be seen in lib/uploadcare.rb

# your_config_initializer_file.rb
Uploadcare.config.public_key = "your_public_key"
Uploadcare.config.secret_key = "your_private_key"

Usage

This section contains practical usage examples. Please note, everything that follows gets way more clear once you've looked through our docs and Upload and REST API refs.

You can also find an example project here.

Uploading files

Uploading and storing a single file

Using Uploadcare is simple, and here are the basics of handling files.

@file_to_upload = File.open("your-file.png")

@uc_file = Uploadcare::Uploader.upload(@file_to_upload, store: "auto")

@uc_file.uuid
# => "dc99200d-9bd6-4b43-bfa9-aa7bfaefca40"

# URL for the file, can be used with your website or app right away
@uc_file.original_file_url
# => "https://ucarecdn.com/dc99200d-9bd6-4b43-bfa9-aa7bfaefca40/your-file.png"

The store option can have these possible values:

• true: mark the uploaded file as stored.
• false: do not mark the uploaded file as stored and remove it after 24 hours.
• "auto": defers the choice of storage behavior to the auto-store setting for your Uploadcare project. This is the default behavior.

Your might then want to store or delete the uploaded file.

# that's how you store a file, if you have uploaded the file using store: false and changed your mind later
@uc_file.store
# => #<Uploadcare::Api::File ...

# and that works for deleting it
@uc_file.delete
# => #<Uploadcare::Api::File ...

Multiple ways to upload files

Uploadcare supports multiple ways to upload files:

# Smart upload - detects type of passed object and picks appropriate upload method
# If you have a large file (more than 100Mb / 10485760 bytes), the uploader will automatically process it with a multipart upload

Uploadcare::Uploader.upload("https://placekitten.com/96/139", store: "auto")

There are explicit ways to select upload type:

files = [File.open("1.jpg"), File.open("1.jpg")]
Uploadcare::Uploader.upload_files(files, store: 'auto')

Uploadcare::Uploader.upload_from_url("https://placekitten.com/96/139", store: "auto")

It is possible to track progress of the upload-from-URL process. To do that, you should specify the async option and get a token:

Uploadcare::Uploader.upload_from_url("https://placekitten.com/96/139", async: true)
# => "c6e31082-6bdc-4cb3-bef5-14dd10574d72"

After the request for uploading-from-URL is sent, you can check the progress of the upload by sending the get_upload_from_url_status request:

Uploadcare::Uploader.get_upload_from_url_status("1251ee66-3631-4416-a2fb-96ba59f5a515")
# => Success({:size=>453543, :total=>453543, :done=>453543, :uuid=>"5c51a7fe-e45d-42a2-ba5e-79957ff4bdab", :file_id=>"5c51a7fe-e45d-42a2-ba5e-79957ff4bdab", :original_filename=>"2250", :is_image=>true, :is_stored=>false, :image_info=>{:dpi=>[96, 96], :width=>2250, :format=>"JPEG", :height=>2250, :sequence=>false, :color_mode=>"RGB", :orientation=>nil, :geo_location=>nil, :datetime_original=>nil}, :video_info=>nil, :content_info=>{:mime=>{:mime=>"image/jpeg", :type=>"image", :subtype=>"jpeg"}, :image=>{:dpi=>[96, 96], :width=>2250, :format=>"JPEG", :height=>2250, :sequence=>false, :color_mode=>"RGB", :orientation=>nil, :geo_location=>nil, :datetime_original=>nil}}, :is_ready=>true, :filename=>"2250", :mime_type=>"image/jpeg", :metadata=>{}, :status=>"success"})

In case of the async option is disabled, uploadcare-ruby tries to request the upload status several times (depending on the max_request_tries config param) and then returns uploaded file attributes.

# multipart upload - can be useful for files bigger than 10 mb
Uploadcare::Uploader.multipart_upload(File.open("big_file.bin"), store: true)

For the multipart upload you can pass a block to add some additional logic after each file chunk is uploaded. For example to track file uploading progress you can do something like this:

file = File.open("big_file.bin")
progress = 0
Uploadcare::Uploader.multipart_upload(file, store: true) do |options|
  progress += (100.0 / options[:links_count])
  puts "PROGRESS = #{progress}"
end

Output of the code above looks like:

PROGRESS = 4.545454545454546
PROGRESS = 9.090909090909092
PROGRESS = 13.636363636363637
...

Options available in a block:

• :chunk_size - size of each chunk in bytes;
• :object - file object which is going to be uploaded;
• :offset - offset from the beginning of a File object in bytes;
• :link_id - index of a link provided by Uploadcare API. Might be treated as index of a chunk;
• :links - array of links for uploading file's chunks;
• :links_count - count of the array of links.

Uploading options

You can override auto-store setting from your Uploadcare project for each upload request:

@api.upload(files, store: true)          # mark the uploaded file as stored.
@api.upload(files, store: false)         # do not mark the uploaded file as stored and remove it after 24 hours.
@api.upload_from_url(url, store: "auto") # defers the choice of storage behavior to the auto-store setting.

You can upload file with custom metadata, for example subsystem and pet:

@api.upload(files, metadata: { subsystem: 'my_subsystem', pet: 'cat' } )
@api.upload_from_url(url, metadata: { subsystem: 'my_subsystem', pet: 'cat' })

File management

Entities are representations of objects in Uploadcare cloud.

File

File entity contains its metadata. It also supports include param to include additional fields to the file object, such as: "appdata".

@file = Uploadcare::File.file("FILE_UUID", include: "appdata")
{
  "datetime_removed"=>nil,
  "datetime_stored"=>"2018-11-26T12:49:10.477888Z",
  "datetime_uploaded"=>"2018-11-26T12:49:09.945335Z",
  "is_image"=>true,
  "is_ready"=>true,
  "mime_type"=>"image/jpeg",
  "original_file_url"=>"https://ucarecdn.com/FILE_UUID/pineapple.jpg",
  "original_filename"=>"pineapple.jpg",
  "size"=>642,
  "url"=>"https://api.uploadcare.com/files/FILE_UUID/",
  "uuid"=>"FILE_UUID",
  "variations"=>nil,
  "content_info"=>{
    "mime"=>{
      "mime"=>"image/jpeg",
      "type"=>"image",
      "subtype"=>"jpeg"
    },
    "image"=>{
      "format"=>"JPEG",
      "width"=>500,
      "height"=>500,
      "sequence"=>false,
      "orientation"=>6,
      "geo_location"=>{
        "latitude"=>55.62013611111111,
        "longitude"=>37.66299166666666
      },
      "datetime_original"=>"2018-08-20T08:59:50",
      "dpi"=>[72, 72]
    }
  },
  "metadata"=>{
    "subsystem"=>"uploader",
    "pet"=>"cat"
  },
  "appdata"=>{
    "uc_clamav_virus_scan"=>{
      "data"=>{
        "infected"=>true,
        "infected_with"=>"Win.Test.EICAR_HDB-1"
      },
      "version"=>"0.104.2",
      "datetime_created"=>"2021-09-21T11:24:33.159663Z",
      "datetime_updated"=>"2021-09-21T11:24:33.159663Z"
    },
    "remove_bg"=>{
      "data"=>{
        "foreground_type"=>"person"
      },
      "version"=>"1.0",
      "datetime_created"=>"2021-07-25T12:24:33.159663Z",
      "datetime_updated"=>"2021-07-25T12:24:33.159663Z"
    },
    "aws_rekognition_detect_labels"=>{
      "data"=>{
        "LabelModelVersion"=>"2.0",
        "Labels"=>[
          {
            "Confidence"=>93.41645812988281,
            "Instances"=>[],
            "Name"=>"Home Decor",
            "Parents"=>[]
          },
          {
            "Confidence"=>70.75951385498047,
            "Instances"=>[],
            "Name"=>"Linen",
            "Parents"=>[{ "Name"=>"Home Decor" }]
          },
          {
            "Confidence"=>64.7123794555664,
            "Instances"=>[],
            "Name"=>"Sunlight",
            "Parents"=>[]
          },
          {
            "Confidence"=>56.264793395996094,
            "Instances"=>[],
            "Name"=>"Flare",
            "Parents"=>[{ "Name"=>"Light" }]
          },
          {
            "Confidence"=>50.47153854370117,
            "Instances"=>[],
            "Name"=>"Tree",
            "Parents"=>[{ "Name"=>"Plant" }]
          }
        ]
      },
      "version"=>"2016-06-27",
      "datetime_created"=>"2021-09-21T11:25:31.259763Z",
      "datetime_updated"=>"2021-09-21T11:27:33.359763Z"
    }
  }
}

@file.local_copy # copy file to local storage

@file.remote_copy # copy file to remote storage

@file.store # stores file, returns updated metadata

@file.delete #deletes file. Returns updated metadata

The File object is also can be converted if it is a document or a video file. Imagine, you have a document file:

@file = Uploadcare::File.file("FILE_UUID")

To convert it to an another file, just do:

@converted_file = @file.convert_document({ format: "png", page: "1" }, store: true)
# => {
#    "uuid"=>"<NEW_FILE_UUID>"}
#    ...other file info...
# }
# OR
# Failure({:"<FILE_UUID>/document/-/format/png/-/page/1/"=>"the target_format is not a supported 'to' format for this source file. <you_source_file_extension> -> png"})

Same works for video files:

@converted_file = @file.convert_video(
  {
    format: "ogg",
    quality: "best",
    cut: { start_time: "0:0:0.1", length: "end" },
    size: { resize_mode: "change_ratio", width: "600", height: "400" },
    thumb: { N: 1, number: 2 }
  },
  store: true
)
# => {
#    "uuid"=>"<NEW_FILE_UUID>"}
#    ...other file info...
# }
# OR
# Failure({:"<FILE_UUID>/video/-/size/600x400/preserve_ratio/-/quality/best/-/format/ogg/-/cut/0:0:0.1/end/-/thumbs~1/2/"=>"CDN Path error: Failed to parse remainder \"/preserve_ratio\" of \"size/600x400/preserve_ratio\""})

More about file conversion here. Metadata of deleted files is stored permanently.

FileList

Uploadcare::FileList represents the whole collection of files (or it's subset) and provides a way to iterate through it, making pagination transparent. FileList objects can be created using Uploadcare::FileList.file_list method.

@list = Uploadcare::FileList.file_list
# Returns instance of Uploadcare::Entity::FileList
<Hashie::Mash
  next=nil
  per_page=100
  previous=nil
  results=[
    # Array of Entity::File
  ]
  total=8>
# load last page of files
@files = @list.files
# load all files
@all_files = @list.load

This method accepts some options to control which files should be fetched and how they should be fetched:

• :limit — Controls page size. Accepts values from 1 to 1000, defaults to 100.
• :stored — Can be either true or false. When true, file list will contain only stored files. When false — only not stored.
• :removed — Can be either true or false. When true, file list will contain only removed files. When false — all except removed. Defaults to false.
• :ordering — Controls the order of returned files. Available values: datetime_uploaded, -datetime_uploaded. Defaults to datetime_uploaded. More info can be found here.
• :from — Specifies the starting point for a collection. Resulting collection will contain files from the given value and to the end in a direction set by an ordering option. When files are ordered by datetime_updated in any direction, accepts either a DateTime object or an ISO 8601 string. When files are ordered by size, accepts non-negative integers (size in bytes). More info can be found here.

Options used to create a file list can be accessed through #options method. Note that, once set, they don't affect file fetching process anymore and are stored just for your convenience. That is why they are frozen.

options = {
  limit: 10,
  stored: true,
  ordering: "-datetime_uploaded",
  from: "2017-01-01T00:00:00",
}
@list = @api.file_list(options)

To simply get all associated objects:

@list.all # => returns Array of Files

Pagination

Initially, FileList is a paginated collection. It can be navigated using following methods:

  @file_list = Uploadcare::FileList.file_list
  # Let's assume there are 250 files in cloud. By default, UC loads 100 files. To get next 100 files, do:
  @next_page = @file_list.next_page
  # To get previous page:
  @previous_page = @file_list.previous_page

Alternatively, it's possible to iterate through full list of groups or files with each:

@list.each do |file|
  p file.url
end

Custom File Metadata

File metadata is additional, arbitrary data, associated with uploaded file. As an example, you could store unique file identifier from your system.

# Get file's metadata keys and values.
Uploadcare::FileMetadata.index('FILE_UUID')

# Get the value of a single metadata key.
Uploadcare::FileMetadata.show('FILE_UUID', 'KEY')

# Update the value of a single metadata key. If the key does not exist, it will be created.
Uploadcare::FileMetadata.update('FILE_UUID', 'KEY', 'VALUE')

# Delete a file's metadata key.
Uploadcare::FileMetadata.delete('FILE_UUID', 'KEY')

Group

Groups are structures intended to organize sets of separate files. Each group is assigned UUID. Note, group UUIDs include a ~#{files_count} part at the end. That's a requirement of our API.

# group can be created from an array of Uploadcare files (UUIDs)
@file = "134dc30c-093e-4f48-a5b9-966fe9cb1d01"
@file2 = "134dc30c-093e-4f48-a5b9-966fe9cb1d02"
@files_ary = [@file, @file2]
@group = Uploadcare::Group.create @files

# group can be stored by group ID. It means that all files of a group will be stored on Uploadcare servers permanently
Uploadcare::Group.store(group.id)

# get a file group by its ID.
Uploadcare::Group.rest_info(group.id)

# group can be deleted by group ID.
Uploadcare::Group.delete(group.id)
# Note: This operation only removes the group object itself. All the files that were part of the group are left as is.

GroupList

GroupList is a list of Group

@group_list = Uploadcare::GroupList.list
# To get an array of groups:
@groups = @group_list.all

This is a paginated list, so pagination methods apply

Webhook

https://uploadcare.com/docs/api_reference/rest/webhooks/

You can use webhooks to provide notifications about your uploads to target urls. This gem lets you create and manage webhooks.

Each webhook payload can be signed with a secret (the signing_secret option) to ensure that the request comes from the expected sender. More info about secure webhooks here.

Uploadcare::Webhook.create(target_url: "https://example.com/listen", event: "file.uploaded", is_active: true, signing_secret: "some-secret")
Uploadcare::Webhook.update(<webhook_id>, target_url: "https://newexample.com/listen/new", event: "file.uploaded", is_active: true, signing_secret: "some-secret")
Uploadcare::Webhook.delete("https://example.com/listen")
Uploadcare::Webhook.list

Webhook signature verification

The gem has a helper class to verify a webhook signature from headers — Uploadcare::Param::WebhookSignatureVerifier. This class accepts three important options:

• :webhook_body — this option represents parameters received in the webhook request in the JSON format. NOTE: if you're using Rails, you should exclude options controller, action and post from the webhook_body.
• :signing_secret — the secret that was set while creating/updating a webhook. This option can be specified as an ENV var with the name UC_SIGNING_SECRET — then no need to send it to the verifier class.
• :x_uc_signature_header — the content of the X-Uc-Signature HTTP header in the webhook request.

Using the Uploadcare::Param::WebhookSignatureVerifier class example:

  webhook_body = '{...}'

signing_secret = "12345X"
x_uc_signature_header = "v1=9b31c7dd83fdbf4a2e12b19d7f2b9d87d547672a325b9492457292db4f513c70"

Uploadcare::Param::WebhookSignatureVerifier.valid?(signing_secret: signing_secret, x_uc_signature_header: x_uc_signature_header, webhook_body: webhook_body)

You can write your verifier. Example code:

webhook_body_json = '{...}'

signing_secret = ENV['UC_SIGNING_SECRET']
x_uc_signature_header = "v1=f4d859ed2fe47b9a4fcc81693d34e58ad12366a841e58a7072c1530483689cc0"

digest = OpenSSL::Digest.new('sha256')

calculated_signature = "v1=#{OpenSSL::HMAC.hexdigest(digest, signing_secret.force_encoding("utf-8"), webhook_body_json.force_encoding("utf-8"))}"

if calculated_signature == x_uc_signature_header
  puts "WebHook signature matches!"
else
  puts "WebHook signature mismatch!"
end

Add-Ons

An Add-On is an application implemented by Uploadcare that accepts uploaded files as an input and can produce other files and/or appdata as an output.

AWS Rekognition

# Execute AWS Rekognition Add-On for a given target to detect labels in an image.
# Note: Detected labels are stored in the file's appdata.
Uploadcare::Addons.ws_rekognition_detect_labels('FILE_UUID')

# Check the status of AWS Rekognition.
Uploadcare::Addons.ws_rekognition_detect_labels_status('RETURNED_ID_FROM_WS_REKOGNITION_DETECT_LABELS')

AWS Rekognition Moderation

# Execute AWS Rekognition Moderation Add-On for a given target to detect moderation labels in an image.
# Note: Detected moderation labels are stored in the file's appdata.

Uploadcare::Addons.ws_rekognition_detect_moderation_labels('FILE_UUID')

# Check the status of an Add-On execution request that had been started using the Execute Add-On operation.
Uploadcare::Addons.ws_rekognition_detect_moderation_labels_status('RETURNED_ID_FROM_WS_REKOGNITION_DETECT_MODERATION_LABELS')

ClamAV

# ClamAV virus checking Add-On for a given target.
Uploadcare::Addons.uc_clamav_virus_scan('FILE_UUID')

# Check and purge infected file.
Uploadcare::Addons.uc_clamav_virus_scan('FILE_UUID', purge_infected: true )

# Check the status of an Add-On execution request that had been started using the Execute Add-On operation.
Uploadcare::Addons.uc_clamav_virus_scan_status('RETURNED_ID_FROM_UC_CLAMAV_VIRUS_SCAN')

Remove.bg

# Execute remove.bg background image removal Add-On for a given target.
Uploadcare::Addons.remove_bg('FILE_UUID')

# You can pass optional parameters.
# See the full list of parameters here: https://uploadcare.com/api-refs/rest-api/v0.7.0/#operation/removeBgExecute
Uploadcare::Addons.remove_bg('FILE_UUID', crop: true, type_level: '2')

# Check the status of an Add-On execution request that had been started using the Execute Add-On operation.
Uploadcare::Addons.remove_bg_status('RETURNED_ID_FROM_REMOVE_BG')

Project

Project provides basic info about the connected Uploadcare project. That object is also an Hashie::Mash, so every methods out of these will work.

@project = Uploadcare::Project.project
# => #<Uploadcare::Api::Project collaborators=[], name="demo", pub_key="your_public_key", autostore_enabled=true>

@project.name
# => "demo"

@project.collaborators
# => []
# while that one was empty, it usually goes like this:
# [{"email": collaborator@gmail.com, "name": "Collaborator"}, {"email": collaborator@gmail.com, "name": "Collaborator"}]

Conversion

Video

After each video file upload you obtain a file identifier in UUID format. Then you can use this file identifier to convert your video in multiple ways:

Uploadcare::VideoConverter.convert(
  [
    {
      uuid: "dc99200d-9bd6-4b43-bfa9-aa7bfaefca40",
      size: { resize_mode: "change_ratio", width: "600", height: "400" },
      quality: "best",
      format: "ogg",
      cut: { start_time: "0:0:0.0", length: "0:0:1.0" },
      thumbs: { N: 2, number: 1 }
    }
  ],
  store: false
)

This method accepts options to set properties of an output file:

• uuid — the file UUID-identifier.
• size:
  • resize_mode - size operation to apply to a video file. Can be preserve_ratio (default), change_ratio, scale_crop or add_padding.
  • width - width for a converted video.
  • height - height for a converted video.

  NOTE: you can choose to provide a single dimension (width OR height).
        The value you specify for any of the dimensions should be a non-zero integer divisible by 4

• quality - sets the level of video quality that affects file sizes and hence loading times and volumes of generated traffic. Can be normal (default), better, best, lighter, lightest.
• format - format for a converted video. Can be mp4 (default), webm, ogg.
• cut:
  • start_time - defines the starting point of a fragment to cut based on your input file timeline.
  • length - defines the duration of that fragment.
• thumbs:
  • N - quantity of thumbnails for your video - non-zero integer ranging from 1 to 50; defaults to 1.
  • number - zero-based index of a particular thumbnail in a created set, ranging from 1 to (N - 1).
• store - a flag indicating if Uploadcare should store your transformed outputs.

# Response
{
  :result => [
    {
      :original_source=>"dc99200d-9bd6-4b43-bfa9-aa7bfaefca40/video/-/size/600x400/change_ratio/-/quality/best/-/format/ogg/-/cut/0:0:0.0/0:0:1.0/-/thumbs~2/1/",
      :token=>911933811,
      :uuid=>"6f9b88bd-625c-4d60-bfde-145fa3813d95",
      :thumbnails_group_uuid=>"cf34c5a1-8fcc-4db2-9ec5-62c389e84468~2"
    }
  ],
  :problems=>{}
}

Params in the response:

• result - info related to your transformed output(-s):
  • original_source - built path for a particular video with all the conversion operations and parameters.
  • token - a processing job token that can be used to get a job status (see below).
  • uuid - UUID of your processed video file.
  • thumbnails_group_uuid - holds :uuid-thumb-group, a UUID of a file group with thumbnails for an output video, based on the thumbs operation parameters.
• problems - problems related to your processing job, if any.

To convert multiple videos just add params as a hash for each video to the first argument of the Uploadcare::VideoConverter#convert method:

Uploadcare::VideoConverter.convert(
  [
    { video_one_params }, { video_two_params }, ...
  ],
  store: false
)

To check a status of a video processing job you can simply use appropriate method of Uploadcare::VideoConverter:

token = 911933811
Uploadcare::VideoConverter.status(token)

token here is a processing job token, obtained in a response of a convert video request.

# Response
{
  :status => "finished",
  :error => nil,
  :result => {
    :uuid => "dc99200d-9bd6-4b43-bfa9-aa7bfaefca40",
    :thumbnails_group_uuid => "0f181f24-7551-42e5-bebc-14b15d9d3838~2"
  }
}

Params in the response:

• status - processing job status, can have one of the following values:
  • pending — video file is being prepared for conversion.
  • processing — video file processing is in progress.
  • finished — the processing is finished.
  • failed — we failed to process the video, see error for details.
  • canceled — video processing was canceled.
• error - holds a processing error if we failed to handle your video.
• result - repeats the contents of your processing output.
• thumbnails_group_uuid - holds :uuid-thumb-group, a UUID of a file group with thumbnails for an output video, based on the thumbs operation parameters.
• uuid - a UUID of your processed video file.

More examples and options can be found here.

Document

After each document file upload you obtain a file identifier in UUID format.

You can use file identifier to determine the document format and possible conversion formats.

Uploadcare::DocumentConverter.info("dc99200d-9bd6-4b43-bfa9-aa7bfaefca40")

# Response
{:error=>nil, :format=>{
  :name=>"jpg",
  :conversion_formats=>[
    {:name=>"avif"}, {:name=>"bmp"}, {:name=>"gif"}, {:name=>"ico"}, {:name=>"pcx"}, {:name=>"pdf"}, {:name=>"png"}, {:name=>"ps"}, {:name=>"svg"}, {:name=>"tga"}, {:name=>"thumbnail"}, {:name=>"tiff"}, {:name=>"wbmp"}, {:name=>"webp"}
  ]
}}

Then you can use this file identifier to convert your document to a new format:

Uploadcare::DocumentConverter.convert(
  [
    {
      uuid: "dc99200d-9bd6-4b43-bfa9-aa7bfaefca40",
      format: "pdf"
    }
  ],
  store: false
)

or create an image of a particular page (if using image format):

Uploadcare::DocumentConverter.convert(
  [
    {
      uuid: "a4b9db2f-1591-4f4c-8f68-94018924525d",
      format: "png",
      page: 1
    }
  ],
  store: false
)

This method accepts options to set properties of an output file:

• uuid — the file UUID-identifier.
• format - defines the target format you want a source file converted to. The supported values are: pdf (default), doc, docx, xls, xlsx, odt, ods, rtf, txt, jpg, png. In case the format operation was not found, your input document will be converted to pdf.
• page - a page number of a multi-paged document to either jpg or png. The method will not work for any other target formats.

# Response
{
  :result => [
    {
      :original_source=>"a4b9db2f-1591-4f4c-8f68-94018924525d/document/-/format/png/-/page/1/",
      :token=>21120220
      :uuid=>"88fe5ada-90f1-422a-a233-3a0f3a7cf23c"
    }
  ],
  :problems=>{}
}

Params in the response:

• result - info related to your transformed output(-s):
  • original_source - source file identifier including a target format, if present.
  • token - a processing job token that can be used to get a job status (see below).
  • uuid - UUID of your processed document file.
• problems - problems related to your processing job, if any.

To convert multiple documents just add params as a hash for each document to the first argument of the Uploadcare::DocumentConverter#convert method:

Uploadcare::DocumentConverter.convert(
  [
    { doc_one_params }, { doc_two_params }, ...
  ],
  store: false
)

To check a status of a document processing job you can simply use appropriate method of Uploadcare::DocumentConverter:

token = 21120220
Uploadcare::DocumentConverter.status(token)

token here is a processing job token, obtained in a response of a convert document request.

# Response
{
  :status => "finished",
  :error => nil,
  :result => {
    :uuid => "a4b9db2f-1591-4f4c-8f68-94018924525d"
  }
}

Params in the response:

• status - processing job status, can have one of the following values:
  • pending — document file is being prepared for conversion.
  • processing — document file processing is in progress.
  • finished — the processing is finished.
  • failed — we failed to process the document, see error for details.
  • canceled — document processing was canceled.
• error - holds a processing error if we failed to handle your document.
• result - repeats the contents of your processing output.
• uuid - a UUID of your processed document file.

More examples and options can be found here

Secure delivery

You can use custom domain and CDN provider to deliver files with authenticated URLs (see original documentation).

To generate authenticated URL from the library, you should choose Uploadcare::SignedUrlGenerators::AkamaiGenerator (or create your own generator implementation):

generator = Uploadcare::SignedUrlGenerators::AkamaiGenerator.new(cdn_host: 'example.com', secret_key: 'secret_key')
# Optional parameters: ttl: 300, algorithm: 'sha256'
generator.generate_url(uuid, acl = optional)

generator.generate_url("a7d5645e-5cd7-4046-819f-a6a2933bafe3")
# https://example.com/a7d5645e-5cd7-4046-819f-a6a2933bafe3/?token=exp=1649405263~acl=/a7d5645e-5cd7-4046-819f-a6a2933bafe3/~hmac=a989cae5342f17013677f5a0e6577fc5594cc4e238fb4c95eda36634eb47018b

# You can pass in ACL as a second parameter to generate_url. See https://uploadcare.com/docs/security/secure-delivery/#authenticated-urls for supported acl formats
generator.generate_url("a7d5645e-5cd7-4046-819f-a6a2933bafe3", '/*/')
# https://example.com/a7d5645e-5cd7-4046-819f-a6a2933bafe3/?token=exp=1649405263~acl=/*/~hmac=3ce1152c6af8864b36d4dc721f08ca3cf0b3a20278d7f849e82c6c930d48ccc1

# Optionally you can use wildcard: true to generate a wildcard acl token
generator.generate_url("a7d5645e-5cd7-4046-819f-a6a2933bafe3", wildcard: true)
# https://example.com/a7d5645e-5cd7-4046-819f-a6a2933bafe3/?token=exp=1714233449~acl=/a7d5645e-5cd7-4046-819f-a6a2933bafe3/*~hmac=a568ee2a85dd90a8a8a1ef35ea0cc0ef0acb84fe81990edd3a06eacf10a52b4e

# You can also pass in a custom ttl and algorithm to AkamaiGenerator
generator = Uploadcare::SignedUrlGenerators::AkamaiGenerator.new(cdn_host: 'example.com', secret_key: 'secret_key', ttl: 10)
generator.generate_url("a7d5645e-5cd7-4046-819f-a6a2933bafe3")
# This generates a URL that expires in 10 seconds
# https://example.com/a7d5645e-5cd7-4046-819f-a6a2933bafe3/?token=exp=1714233277~acl=/a7d5645e-5cd7-4046-819f-a6a2933bafe3/~hmac=f25343104aeced3004d2cc4d49807d8d7c732300b54b154c319da5283a871a71

Useful links

• Development
• Uploadcare documentation
• Upload API reference
• REST API reference
• Changelog
• Contributing guide
• Security policy
• Support