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addOnUISdk.app.document

Provides access to the methods needed for retrieving document metadata, importing content such as images, audio and video into the document, and for exporting content from the current document.

General Methods

id()

Retrieves the id of the document.

Signature

id(): Promise<string | undefined>

Return Value

A resolved Promise containing the id of the document.

Example

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import addOnUISdk from "https://new.express.adobe.com/static/add-on-sdk/sdk.js";
function setId(id) { /* ... */ }
addOnUISdk.ready.then(() => setId(await addOnUISdk.app.document.id()));
addOnUISdk.app.on("documentAvailable", data => {
setId(data.documentId);
});

title()

Retrieves the title/name of the document.

Signature

title(): Promise<string>

Return Value

A resolved Promise containing the title (ie: name) of the document.

Example

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import addOnUISdk from "https://new.express.adobe.com/static/add-on-sdk/sdk.js";
function setTitle(title) { /* ... */ }
addOnUISdk.ready.then(() => setTitle(await addOnUISdk.app.document.title()));
addOnUISdk.app.on("documentTitleChange", data => {
setTitle(data.documentTitle);
});

getPagesMetadata()

Retrieve the metadata for all of the pages in the document.

Signature

getPagesMetadata(options: PageMetadataOptions): Promise<PageMetadata[]>

Parameters

NameTypeDescription
options
Object

Return Value

A resolved Promise containing a PageMetadata array containing all of the pages in the document.

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import addOnUISdk from "https://new.express.adobe.com/static/add-on-sdk/sdk.js";
// Wait for the SDK to be ready
await addOnUISdk.ready;
// Get metadata of all the pages
async function logMetadata() {
try {
const pages = (await addOnUISdk.app.document.getPagesMetadata({
range: addOnUISdk.constants.Range.specificPages,
pageIds: [
"7477a5e7-02b2-4b8d-9bf9-f09ef6f8b9fc",
"d45ba3fc-a3df-4a87-80a5-655e5f8f0f96"
]
})) as PageMetadata[];
for (const page of pages) {
console.log("Page id: ", page.id);
console.log("Page title: ", page.title);
console.log("Page size: ", page.size);
console.log("Page has premium content: ", page.hasPremiumContent);
console.log("Page has timelines: ", page.hasTemporalContent);
console.log("Pixels per inch: ", page.pixelsPerInch);
console.log("Is page print ready: ", page.isPrintReady);
}
}
catch(error) {
console.log("Failed to get metadata:", error);
}
}

PageMetadata

The metadata of a page.

NameTypeDescription
id
string
The id of the page.
title
string
The title of the page.
size
{ width: number, height: number }
The size of the page in pixels.
hasPremiumContent
boolean
true if the page has premium content, false if not.
hasTemporalContent
boolean
true if the page has timelines, false if not.
pixelsPerInch?
number
The pixels per inch of the page.
isPrintReady?
boolean
Indicates whether the page has passed various internal quality checks to ensure high quality output when printed. While the specifics may change over time, Adobe Express checks for sufficient image resolution and sizes to ensure that a print will be of good quality. If this is false, the output may be blurry or of poor quality (based on internal heuristics).

PageMetadataOptions

This object is passed as a parameter to the getPagesMetadata method and includes the range and optional pageIds for which you want to retrieve metadata for.

NameTypeDescription
range
string
Range of the document to get the metadata
pageIds?: string[]
string
Ids of the pages (Only required when the range is specificPages)

Import Content Methods

addImage()

Adds an image (including gif/Ps/Ai files) to the current page.

Signature

addImage(imageBlob: Blob, attributes?: MediaAttributes): Promise<void>

Parameters

NameTypeDescription
imageBlob
Blob
The image to add to the page.
attributes?
Attributes that can be passed when adding Ps/Ai filse to the page (i.e., title).

MediaAttributes

NameTypeDescription
title
string
Media title (mandatory for audio import).

Return Value

A resolved promise if the image was successfully added to the canvas; otherwise, it will throw an error with the rejected promise.

Example Usage

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// Add image(blob) to the current page
async function addImageFromBlob(blob) {
try {
await document.addImage(blob);
}
catch(error) {
console.log("Failed to add the image to the page.");
}
}
// Add image(url) to the current page
async function addImageFromURL(url) {
try {
const blob = await fetch(url).then(response => response.blob());
await document.addImage(blob);
}
catch(error) {
console.log("Failed to add the image to the page.");
}
}

addVideo()

Adds a video to the current page.

Signature

addVideo(videoBlob: Blob): Promise<void>

Parameters

NameTypeDescription
videoBlob
Blob
The video to add to the page.

Example Usage

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async function addVideoFromBlob(blob) {
try {
await document.addVideo(blob);
}
catch(error) {
console.log("Failed to add the video to the page.");
}
}
async function addVideoFromURL(url) {
try {
const blob = await fetch(url).then(response => response.blob());
await document.addVideo(blob);
}
catch(error) {
console.log("Failed to add the video to the page.");
}
}

addAudio()

Adds audio to the current page.

Signature

addAudio(audioBlob: Blob, attributes: MediaAttributes): Promise<void>

Parameters

NameTypeDescription
audioBlob
Blob
The audio to add to the page.
attributes
Attributes to pass when adding the audio to the page (ie: title, which is mandatory).

MediaAttributes

NameTypeDescription
title
string
Media title (mandatory for audio import).

Return Value

A resolved promise if the audio was successfully added to the canvas; otherwise will throw an error with the rejected promise.

Example Usage

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async function addAudioFromBlob(blob) {
try {
await document.addAudio(blob, {title: "Jazzy beats"});
}
catch(error) {
console.log("Failed to add the audio to the page.");
}
}
async function addAudioFromURL(url) {
try {
const blob = await fetch(url).then(response => response.blob());
await document.addAudio(blob, {title: "Jazzy beats"});
}
catch(error) {
console.log("Failed to add the audio to the page.");
}

Errors

The table below describes the possible error messages that may occur when using the import methods, with a description of the scenario that would cause them to be returned.

Error MessageError Scenario
Invalid blob.
Blob is invalid.
Unsupported mime type : ${blob.type}
Mime type is invalid.
Import image width or height exceed the maximum limit : ${maxSupportedDimension}
The imported image dimensions exceed the maximum limit if any defined by Express.
Import image size exceed the maximum limit: ${maxSupportedSize}MB
The imported image size exceeds the maximum limit if any defined by Express.
No active page available.
Current page doesn't exist.

Export Content Methods

createRenditions()

Generate renditions of the current page, specific pages or the entire document in a specified format for export.

Signature

createRenditions(renditionOptions: RenditionOptions, renditionIntent?: RenditionIntent): Promise<Rendition[]>

Parameters

NameTypeDescription
renditionOptions
Object
renditionIntent
string
RenditionIntent constant value.

NOTE: The default value for renditionIntent is export. If it's set to preview, it also requires the renditionPreview flag to be set to true in the manifest requirements section. Additionally, when implementing the premium content flows where you present a dialog or option to allow the user to upgrade, you must be sure to also include the following permissions in the sandbox attribute of your manifest.json to allow the Adobe Express pricing page to load properly:

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"permissions": {
"sandbox": ["allow-popups-to-escape-sandbox", "allow-popups", "allow-downloads"]
}

Refer to the exporting content use case example for more specific details on options for handling the export of premium content.

RenditionOptions

NameTypeDescription
range
string
Range constant value.
format
string
RenditionFormat constant value.
pageIds?
string[]
Ids of the pages (only required if the range is specificPages)

JpgRenditionOptions

Extends the RenditionOptions object and adds the following additional options for jpg renditions:

NameTypeDescription
backgroundColor?
number
Integer in 0xRRGGBB format of the background color you wish to sit behind any transparent areas. By default it is derived from the entity for which the rendition needs to be created.
quality?
number
A number between 0 and 1, indicating image quality. Default is 1.0.
{width?: number; height?: number}
Requested size (in pixels).

PngRenditionOptions

Extends the RenditionOptions object and adds the following additional options for png renditions:

NameTypeDescription
backgroundColor?
number
Integer in 0xRRGGBB format of the background color you wish to sit behind any transparent areas. By default it is derived from the entity for which the rendition needs to be created.
{width?: number; height?: number}
Requested size (in pixels).

Requested Size Notes

  • The supported size is from 1 x 1 to width x height.
  • Aspect ratio is maintained while scaling the rendition based on the requested size.
  • Up-scaling is currently not supported.
  • If the requested size is invalid, it will be ignored and the original size rendition will be created.
  • Some examples of what the actual exported sizes will be, depending on the page size and requested size are in the table below for reference.
Page SizeRequested SizeExported Size
400 x 600
200 x 200
134 x 200
400 x 600
200 x 400
200 x 300
400 x 600
200 x -200
400 x 600
400 x 600
800 x 1000
400 x 600

PdfRenditionOptions

Extends the RenditionOptions object and adds the following additional options for pdf renditions:

NameTypeDescription
bleed?
Bleed for the page. In printing, bleed is printing that goes beyond the edge of where the sheet will be trimmed. In other words, the bleed is the area to be trimmed off. The parameter is optional, and if left undefined, then no bleed is assumed. If bleed is defined, CropBox and TrimBox will be the size of the Express document, BleedBox and MediaBox will be equal to each other, and they will expand on all sides (left, top, right, bottom) with the amount/unit specified by bleed.
pageBoxes?
Exposes the ability to customize each PDF Page Box (MediaBox, BleedBox, CropBox, TrimBox) dimensions by defining how much it should expand on each side beyond the Express document page size. If pageBoxes are defined, then PdfRenditionOptions.bleed is ignored.

Bleed

Represents a bleed for a page. In printing, bleed is printing that goes beyond the edge of where the sheet will be trimmed. In other words, the bleed is the area to be trimmed off. If the value is left undefined, then no bleed will be assumed.

NameTypeDescription
amount?
number
The amount for the bleed.
unit
The unit in which the bleed amount is expressed.

PdfPageBoxes

Represents all of the PDF page boxes (MediaBox, BleedBox, CropBox, TrimBox).

NameTypeDescription
mediaBox?
Media box
bleedBox?
Bleed box
cropBox?
Crop box
trimBox?
Trim box

PdfPageBox

Represents a PDF page box.

NameTypeDescription
margins
Margins for a box

PdfPageBoxMargins

Represents margins for a PDF page box.

NameTypeDescription
top?
Top margin
bottom?
Bottom margin
left?
Left margin
right?
Right margin

Mp4RenditionOptions

Extends the RenditionOptions object and adds the following additional options for mp4 renditions:

NameTypeDescription
format
string
RenditionFormat.mp4 constant value.
resolution?
string
VideoResolution constant value.
customResolution?
number
Only required/used if the resolution is VideoResolution.custom

Return Value

A Promise with an array of page Rendition objects (see PageRendition). The array will contain one item if the currentPage range is requested, an array of specific pages when the specificPages range is requested, or all pages when the entireDocument range is specified. Each rendition returned will contain the type, title,metadata for the page and a blob of the rendition itself. Note: If you requested PDF for the format with a larger range than currentPage, a single file will be generated which includes the entire range. When the format is JPG/PNG/MP4, an array of files will be generated that represents each page.

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import addOnUISdk from "https://new.express.adobe.com/static/add-on-sdk/sdk.js";
// Wait for the SDK to be ready
await addOnUISdk.ready;
// Display preview of all pages in the AddOn UI
async function displayPreview() {
try {
const renditionOptions = {
range: addOnUISdk.constants.Range.entireDocument,
format: addOnUISdk.constants.RenditionFormat.png,
backgroundColor: 0x7FAA77FF
};
const renditions = await addOnUISdk.app.document.createRenditions(renditionOptions, addOnUISdk.constants.RenditionIntent.preview);
renditions.forEach(rendition => {
const image = document.createElement("img");
image.src = URL.createObjectURL(rendition.blob);
document.body.appendChild(image);
});
}
catch(error) {
console.log("Failed to create renditions:", error);
}
}

Rendition

A rendition object representing a page in the document, returned from createRenditions. See

NameTypeDescription
type?
string
Type of Rendition. Value is always page.
blob
Blob
Blob containing the rendition

PageRendition

An extension of Rendition, returned in the response to createRenditions. This object includes everything in Rendition, as well as:

NameTypeDescription
title
string
The page title of the rendition
metadata
Page metadata

Errors

The table below describes the possible error messages that may occur when using the export methods, with a description of the scenario that will return them.

Error MessageError Scenario
Invalid range: ${options.range}
Range value is invalid.
No active page available.
Range is Range.currentPage and there is no active page.
Unsupported rendition format: ${options.format}
Rendition format is unsupported.
Invalid background color: ${options.backgroundColor}
Background color is invalid.
Invalid quality parameter: ${options.quality} not in range [0,1]
Quality property is invalid in jpeg.
No video element in the specified range.
No video is present in the range when trying to export mp4.
USER_NOT_ENTITLED_TO_PREMIUM_CONTENT
The user is trying to export premium content but is not entitled to it.
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