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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | 1x 3x 3x 3x 2x 2x 2x 2x 2x 2x 2x 2x 2x 3x 3x 3x 3x | import type { ImageKind } from 'pdfjs-dist/legacy/build/pdf.mjs';
/**
* ImageKindKey
* - Represents the keys of the ImageKind enum (e.g. "GRAYSCALE_1BPP", "RGB_24BPP", "RGBA_32BPP").
*/
export type ImageKindKey = keyof typeof ImageKind;
/**
* ImageKindValue
* - Represents the numeric values of the ImageKind enum (e.g. 1, 2, 3).
*/
export type ImageKindValue = (typeof ImageKind)[ImageKindKey];
export class ImageResult {
pages: Array<PageImages> = [];
total: number = 0;
public getPageImage(num: number, name: string): EmbeddedImage | null {
for (const pageData of this.pages) {
if (pageData.pageNumber === num) {
for (const img of pageData.images) {
if (img.fileName === name) {
return img;
}
}
}
}
return null;
}
constructor(total: number) {
this.total = total;
}
}
/**
* PageImages
* - Represents all embedded images found on a single PDF page.
* - pageNumber: 1-based page index.
* - images: Array of EmbeddedImage objects for this page.
*/
export interface PageImages {
pageNumber: number;
images: EmbeddedImage[];
}
/**
* EmbeddedImage
* - Normalized representation of an embedded image extracted from the PDF.
* - `data`: Raw image bytes (e.g. PNG/JPEG) as Uint8Array. Use this for file writing or binary processing.
* - `dataUrl`: Optional data URL (e.g. "data:image/png;base64,...") for directly embedding in <img> src.
* Storing both lets consumers choose the most convenient form; consider omitting one to save memory.
* - `fileName`: Suggested filename or resource name for the image (used when saving to disk).
* - `width` / `height`: Dimensions in pixels.
* - `kind`: ImageKindValue from pdfjs-dist indicating the pixel format (e.g. GRAYSCALE_1BPP / RGB_24BPP / RGBA_32BPP).
*/
export interface EmbeddedImage {
// Raw binary image data (PNG/JPEG) normalized to Uint8Array.
data: Uint8Array;
// Optional base64 data URL for easy embedding in HTML.
dataUrl: string;
// Suggested filename or resource identifier for the image.
fileName: string;
// Image dimensions in pixels.
width: number;
height: number;
// Color format as defined by pdfjs ImageKind numeric values.
kind: ImageKindValue;
}
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