pdf-lib
Version:
Create and modify PDF files with JavaScript
478 lines • 20 kB
TypeScript
import PDFFont from "./PDFFont";
import PDFImage from "./PDFImage";
import PDFPage from "./PDFPage";
import { StandardFonts } from "./StandardFonts";
import { PDFCatalog, PDFContext } from "../core";
import { Fontkit } from "../types/fontkit";
export declare enum ParseSpeeds {
Fastest = Infinity,
Fast = 1500,
Medium = 500,
Slow = 100
}
export interface SaveOptions {
useObjectStreams?: boolean;
addDefaultPage?: boolean;
objectsPerTick?: number;
}
export interface Base64SaveOptions extends SaveOptions {
dataUri?: boolean;
}
export interface LoadOptions {
ignoreEncryption?: boolean;
parseSpeed?: ParseSpeeds | number;
}
export interface EmbedFontOptions {
subset?: boolean;
}
/**
* Represents a PDF document.
*/
export default class PDFDocument {
/**
* Load an existing [[PDFDocument]]. The input data can be provided in
* multiple formats:
*
* | Type | Contents |
* | ------------- | ------------------------------------------------------ |
* | `string` | A base64 encoded string (or data URI) containing a PDF |
* | `Uint8Array` | The raw bytes of a PDF |
* | `ArrayBuffer` | The raw bytes of a PDF |
*
* For example:
* ```js
* import { PDFDocument } from 'pdf-lib'
*
* // pdf=string
* const base64 =
* 'JVBERi0xLjcKJYGBgYEKCjUgMCBvYmoKPDwKL0ZpbHRlciAvRmxhdGVEZWNvZGUKL0xlbm' +
* 'd0aCAxMDQKPj4Kc3RyZWFtCniccwrhMlAAwaJ0Ln2P1Jyy1JLM5ERdc0MjCwUjE4WQNC4Q' +
* '6cNlCFZkqGCqYGSqEJLLZWNuYGZiZmbkYuZsZmlmZGRgZmluDCQNzc3NTM2NzdzMXMxMjQ' +
* 'ztFEKyuEK0uFxDuAAOERdVCmVuZHN0cmVhbQplbmRvYmoKCjYgMCBvYmoKPDwKL0ZpbHRl' +
* 'ciAvRmxhdGVEZWNvZGUKL1R5cGUgL09ialN0bQovTiA0Ci9GaXJzdCAyMAovTGVuZ3RoID' +
* 'IxNQo+PgpzdHJlYW0KeJxVj9GqwjAMhu/zFHkBzTo3nCCCiiKIHPEICuJF3cKoSCu2E8/b' +
* '20wPIr1p8v9/8kVhgilmGfawX2CGaVrgcAi0/bsy0lrX7IGWpvJ4iJYEN3gEmrrGBlQwGs' +
* 'HHO9VBX1wNrxAqMX87RBD5xpJuddqwd82tjAHxzV1U5LPgy52DKXWnr1Lheg+j/c/pzGVr' +
* 'iqV0VlwZPXGPCJjElw/ybkwUmeoWgxesDXGhHJC/D/iikp1Av80ptKU0FdBEe25pPihAM1' +
* 'u6ytgaaWfs2Hrz35CJT1+EWmAKZW5kc3RyZWFtCmVuZG9iagoKNyAwIG9iago8PAovU2l6' +
* 'ZSA4Ci9Sb290IDIgMCBSCi9GaWx0ZXIgL0ZsYXRlRGVjb2RlCi9UeXBlIC9YUmVmCi9MZW' +
* '5ndGggMzgKL1cgWyAxIDIgMiBdCi9JbmRleCBbIDAgOCBdCj4+CnN0cmVhbQp4nBXEwREA' +
* 'EBAEsCwz3vrvRmOOyyOoGhZdutHN2MT55fIAVocD+AplbmRzdHJlYW0KZW5kb2JqCgpzdG' +
* 'FydHhyZWYKNTEwCiUlRU9G'
*
* const dataUri = 'data:application/pdf;base64,' + base64
*
* const pdfDoc1 = await PDFDocument.load(base64)
* const pdfDoc2 = await PDFDocument.load(dataUri)
*
* // pdf=Uint8Array
* import fs from 'fs'
* const uint8Array = fs.readFileSync('with_update_sections.pdf')
* const pdfDoc3 = await PDFDocument.load(uint8Array)
*
* // pdf=ArrayBuffer
* const url = 'https://pdf-lib.js.org/assets/with_update_sections.pdf'
* const arrayBuffer = await fetch(url).then(res => res.arrayBuffer())
* const pdfDoc4 = await PDFDocument.load(arrayBuffer)
*
* ```
*
* @param pdf The input data containing a PDF document.
* @param options The options to be used when loading the document.
* @returns Resolves with a document loaded from the input.
*/
static load(pdf: string | Uint8Array | ArrayBuffer, options?: LoadOptions): Promise<PDFDocument>;
/**
* Create a new [[PDFDocument]].
* @returns Resolves with the newly created document.
*/
static create(): Promise<PDFDocument>;
/** The low-level context of this document. */
readonly context: PDFContext;
/** The catalog of this document. */
readonly catalog: PDFCatalog;
/** Whether or not this document is encrypted. */
readonly isEncrypted: boolean;
/** The default word breaks used in PDFPage.drawText */
defaultWordBreaks: string[];
private fontkit?;
private pageCount;
private readonly pageCache;
private readonly pageMap;
private readonly fonts;
private readonly images;
private constructor();
/**
* Register a fontkit instance. This must be done before custom fonts can
* be embedded. See [here](https://github.com/Hopding/pdf-lib/tree/Rewrite#fontkit-installation)
* for instructions on how to install and register a fontkit instance.
*
* > You do **not** need to call this method to embed standard fonts.
*
* @param fontkit The fontkit instance to be registered.
*/
registerFontkit(fontkit: Fontkit): void;
/**
* Set this document's title metadata. The title will appear in the
* "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setTitle('🥚 The Life of an Egg 🍳')
* ```
* @param title The title of this document.
*/
setTitle(title: string): void;
/**
* Set this document's author metadata. The author will appear in the
* "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setAuthor('Humpty Dumpty')
* ```
* @param author The author of this document.
*/
setAuthor(author: string): void;
/**
* Set this document's subject metadata. The subject will appear in the
* "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setSubject('📘 An Epic Tale of Woe 📖')
* ```
* @param subject The subject of this document.
*/
setSubject(subject: string): void;
/**
* Set this document's keyword metadata. These keywords will appear in the
* "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setKeywords(['eggs', 'wall', 'fall', 'king', 'horses', 'men'])
* ```
* @param keywords An array of keywords associated with this document.
*/
setKeywords(keywords: string[]): void;
/**
* Set this document's creator metadata. The creator will appear in the
* "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setCreator('PDF App 9000 🤖')
* ```
* @param creator The creator of this document.
*/
setCreator(creator: string): void;
/**
* Set this document's producer metadata. The producer will appear in the
* "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setProducer('PDF App 9000 🤖')
* ```
* @param producer The producer of this document.
*/
setProducer(producer: string): void;
/**
* Set this document's creation date metadata. The creation date will appear
* in the "Document Properties" section of most PDF readers. For example:
* ```js
* pdfDoc.setCreationDate(new Date())
* ```
* @param creationDate The date this document was created.
*/
setCreationDate(creationDate: Date): void;
/**
* Set this document's modification date metadata. The modification date will
* appear in the "Document Properties" section of most PDF readers. For
* example:
* ```js
* pdfDoc.setModificationDate(new Date())
* ```
* @param modificationDate The date this document was last modified.
*/
setModificationDate(modificationDate: Date): void;
/**
* Get the number of pages contained in this document. For example:
* ```js
* const totalPages = pdfDoc.getPageCount()
* ```
* @returns The number of pages in this document.
*/
getPageCount(): number;
/**
* Get an array of all the pages contained in this document. The pages are
* stored in the array in the same order that they are rendered in the
* document. For example:
* ```js
* const pages = pdfDoc.getPages()
* pages[0] // The first page of the document
* pages[2] // The third page of the document
* pages[197] // The 198th page of the document
* ```
* @returns An array of all the pages contained in this document.
*/
getPages(): PDFPage[];
/**
* Get an array of indices for all the pages contained in this document. The
* array will contain a range of integers from
* `0..pdfDoc.getPageCount() - 1`. For example:
* ```js
* const pdfDoc = await PDFDocument.create()
* pdfDoc.addPage()
* pdfDoc.addPage()
* pdfDoc.addPage()
*
* const indices = pdfDoc.getPageIndices()
* indices // => [0, 1, 2]
* ```
* @returns An array of indices for all pages contained in this document.
*/
getPageIndices(): number[];
/**
* Remove the page at a given index from this document. For example:
* ```js
* pdfDoc.removePage(0) // Remove the first page of the document
* pdfDoc.removePage(2) // Remove the third page of the document
* pdfDoc.removePage(197) // Remove the 198th page of the document
* ```
* Once a page has been removed, it will no longer be rendered at that index
* in the document.
* @param index The index of the page to be removed.
*/
removePage(index: number): void;
/**
* Add a page to the end of this document. This method accepts three
* different value types for the `page` parameter:
*
* | Type | Behavior |
* | ------------------ | ----------------------------------------------------------------------------------- |
* | `undefined` | Create a new page and add it to the end of this document |
* | `[number, number]` | Create a new page with the given dimensions and add it to the end of this document |
* | `PDFPage` | Add the existing page to the end of this document |
*
* For example:
* ```js
* // page=undefined
* const newPage = pdfDoc.addPage()
*
* // page=[number, number]
* import { PageSizes } from 'pdf-lib'
* const newPage1 = pdfDoc.addPage(PageSizes.A7)
* const newPage2 = pdfDoc.addPage(PageSizes.Letter)
* const newPage3 = pdfDoc.addPage([500, 750])
*
* // page=PDFPage
* const pdfDoc1 = await PDFDocument.create()
* const pdfDoc2 = await PDFDocument.load(...)
* const [existingPage] = await pdfDoc1.copyPages(pdfDoc2, [0])
* pdfDoc1.addPage(existingPage)
* ```
*
* @param page Optionally, the desired dimensions or existing page.
* @returns The newly created (or existing) page.
*/
addPage(page?: PDFPage | [number, number]): PDFPage;
/**
* Insert a page at a given index within this document. This method accepts
* three different value types for the `page` parameter:
*
* | Type | Behavior |
* | ------------------ | ------------------------------------------------------------------------------ |
* | `undefined` | Create a new page and insert it into this document |
* | `[number, number]` | Create a new page with the given dimensions and insert it into this document |
* | `PDFPage` | Insert the existing page into this document |
*
* For example:
* ```js
* // page=undefined
* const newPage = pdfDoc.insertPage(2)
*
* // page=[number, number]
* import { PageSizes } from 'pdf-lib'
* const newPage1 = pdfDoc.insertPage(2, PageSizes.A7)
* const newPage2 = pdfDoc.insertPage(0, PageSizes.Letter)
* const newPage3 = pdfDoc.insertPage(198, [500, 750])
*
* // page=PDFPage
* const pdfDoc1 = await PDFDocument.create()
* const pdfDoc2 = await PDFDocument.load(...)
* const [existingPage] = await pdfDoc1.copyPages(pdfDoc2, [0])
* pdfDoc1.insertPage(0, existingPage)
* ```
*
* @param index The index at which the page should be inserted (zero-based).
* @param page Optionally, the desired dimensions or existing page.
* @returns The newly created (or existing) page.
*/
insertPage(index: number, page?: PDFPage | [number, number]): PDFPage;
/**
* Copy pages from a source document into this document. Allows pages to be
* copied between different [[PDFDocument]] instances. For example:
* ```js
* const pdfDoc = await PDFDocument.create()
* const srcDoc = await PDFDocument.load(...)
*
* const copiedPages = await pdfDoc.copyPages(srcDoc, [0, 3, 89])
* const [firstPage, fourthPage, ninetiethPage] = copiedPages;
*
* pdfDoc.addPage(fourthPage)
* pdfDoc.insertPage(0, ninetiethPage)
* pdfDoc.addPage(firstPage)
* ```
* @param srcDoc The document from which pages should be copied.
* @param indices The indices of the pages that should be copied.
* @returns Resolves with an array of pages copied into this document.
*/
copyPages(srcDoc: PDFDocument, indices: number[]): Promise<PDFPage[]>;
/**
* Embed a font into this document. The input data can be provided in multiple
* formats:
*
* | Type | Contents |
* | --------------- | ------------------------------------------------------- |
* | `StandardFonts` | One of the standard 14 fonts |
* | `string` | A base64 encoded string (or data URI) containing a font |
* | `Uint8Array` | The raw bytes of a font |
* | `ArrayBuffer` | The raw bytes of a font |
*
* For example:
* ```js
* // font=StandardFonts
* import { StandardFonts } from 'pdf-lib'
* const font1 = await pdfDoc.embedFont(StandardFonts.Helvetica)
*
* // font=string
* const font2 = await pdfDoc.embedFont('AAEAAAAVAQAABABQRFNJRx/upe...')
* const font3 = await pdfDoc.embedFont('data:font/opentype;base64,AAEAAA...')
*
* // font=Uint8Array
* import fs from 'fs'
* const font4 = await pdfDoc.embedFont(fs.readFileSync('Ubuntu-R.ttf'))
*
* // font=ArrayBuffer
* const url = 'https://pdf-lib.js.org/assets/ubuntu/Ubuntu-R.ttf'
* const ubuntuBytes = await fetch(url).then(res => res.arrayBuffer())
* const font5 = await pdfDoc.embedFont(ubuntuBytes)
* ```
* See also: [[registerFontkit]]
* @param font The input data for a font.
* @param options The options to be used when embedding the font.
* @returns Resolves with the embedded font.
*/
embedFont(font: StandardFonts | string | Uint8Array | ArrayBuffer, options?: EmbedFontOptions): Promise<PDFFont>;
/**
* Embed a standard font into this document.
* For example:
* ```js
* import { StandardFonts } from 'pdf-lib'
* const helveticaFont = pdfDoc.embedFont(StandardFonts.Helvetica)
* ```
* @param font The standard font to be embedded.
* @returns The embedded font.
*/
embedStandardFont(font: StandardFonts): PDFFont;
/**
* Embed a JPEG image into this document. The input data can be provided in
* multiple formats:
*
* | Type | Contents |
* | ------------- | ------------------------------------------------------------- |
* | `string` | A base64 encoded string (or data URI) containing a JPEG image |
* | `Uint8Array` | The raw bytes of a JPEG image |
* | `ArrayBuffer` | The raw bytes of a JPEG image |
*
* For example:
* ```js
* // jpg=string
* const image1 = await pdfDoc.embedJpg('/9j/4AAQSkZJRgABAQAAAQABAAD/2wBD...')
* const image2 = await pdfDoc.embedJpg('data:image/jpeg;base64,/9j/4AAQ...')
*
* // jpg=Uint8Array
* import fs from 'fs'
* const uint8Array = fs.readFileSync('cat_riding_unicorn.jpg')
* const image3 = await pdfDoc.embedJpg(uint8Array)
*
* // jpg=ArrayBuffer
* const url = 'https://pdf-lib.js.org/assets/cat_riding_unicorn.jpg'
* const arrayBuffer = await fetch(url).then(res => res.arrayBuffer())
* const image4 = await pdfDoc.embedJpg(arrayBuffer)
* ```
*
* @param jpg The input data for a JPEG image.
* @returns Resolves with the embedded image.
*/
embedJpg(jpg: string | Uint8Array | ArrayBuffer): Promise<PDFImage>;
/**
* Embed a PNG image into this document. The input data can be provided in
* multiple formats:
*
* | Type | Contents |
* | ------------- | ------------------------------------------------------------ |
* | `string` | A base64 encoded string (or data URI) containing a PNG image |
* | `Uint8Array` | The raw bytes of a PNG image |
* | `ArrayBuffer` | The raw bytes of a PNG image |
*
* For example:
* ```js
* // png=string
* const image1 = await pdfDoc.embedPng('iVBORw0KGgoAAAANSUhEUgAAAlgAAAF3...')
* const image2 = await pdfDoc.embedPng('data:image/png;base64,iVBORw0KGg...')
*
* // png=Uint8Array
* import fs from 'fs'
* const uint8Array = fs.readFileSync('small_mario.png')
* const image3 = await pdfDoc.embedPng(uint8Array)
*
* // png=ArrayBuffer
* const url = 'https://pdf-lib.js.org/assets/small_mario.png'
* const arrayBuffer = await fetch(url).then(res => res.arrayBuffer())
* const image4 = await pdfDoc.embedPng(arrayBuffer)
* ```
*
* @param png The input data for a PNG image.
* @returns Resolves with the embedded image.
*/
embedPng(png: string | Uint8Array | ArrayBuffer): Promise<PDFImage>;
/**
* > **NOTE:** You shouldn't need to call this method directly. The [[save]]
* > and [[saveAsBase64]] methods will automatically ensure that all embedded
* > assets are flushed before serializing the document.
*
* Flush all embedded fonts and images to this document's [[context]].
*
* @returns Resolves when the flush is complete.
*/
flush(): Promise<void>;
/**
* Serialize this document to an array of bytes making up a PDF file.
* For example:
* ```js
* const pdfBytes = await pdfDoc.save()
* ```
*
* There are a number of things you can do with the serialized document,
* depending on the JavaScript environment you're running in:
* * Write it to a file in Node or React Native
* * Download it as a Blob in the browser
* * Render it in an `iframe`
*
* @param options The options to be used when saving the document.
* @returns Resolves with the bytes of the serialized document.
*/
save(options?: SaveOptions): Promise<Uint8Array>;
/**
* Serialize this document to a base64 encoded string or data URI making up a
* PDF file. For example:
* ```js
* const base64String = await pdfDoc.saveAsBase64()
* base64String // => 'JVBERi0xLjcKJYGBgYEKC...'
*
* const base64DataUri = await pdfDoc.saveAsBase64({ dataUri: true })
* base64DataUri // => 'data:application/pdf;base64,JVBERi0xLjcKJYGBgYEKC...'
* ```
*
* @param options The options to be used when saving the document.
* @returns Resolves with a base64 encoded string or data URI of the
* serialized document.
*/
saveAsBase64(options?: Base64SaveOptions): Promise<string>;
private updateInfoDict;
private getInfoDict;
private assertFontkit;
private computePages;
}
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