Page Operations

This section covers core page-level operations including extracting pages, removing pages, and reordering page sequences.

1. Extract Pages

Compile specific pages into a new PDF document.

Signature

function extractPages(
  file: File | Blob | ArrayBuffer | Uint8Array,
  pagesToExtract: number[]
): Promise<Uint8Array>

Example

import { extractPages } from "@manojcoder/pdf-utils";

async function runExtraction(file: File) {
  const pages = [0, 1, 3]; // Extracts pages 1, 2, and 4
  const bytes = await extractPages(file, pages);
  const blob = new Blob([bytes], { type: "application/pdf" });
  // Process blob...
}

2. Remove Pages

Delete specific page indices from the document.

Signature

function removePages(
  file: File | Blob | ArrayBuffer | Uint8Array,
  pagesToRemove: number[]
): Promise<Uint8Array>

Example

import { removePages } from "@manojcoder/pdf-utils";

async function runRemoval(file: File) {
  const pages = [2]; // Deletes the third page (index 2)
  const bytes = await removePages(file, pages);
  const blob = new Blob([bytes], { type: "application/pdf" });
  // Process blob...
}

3. Reorder Pages

Rearrange page layouts by passing the new sequence array.

Signature

function reorderPages(
  file: File | Blob | ArrayBuffer | Uint8Array,
  newOrder: number[]
): Promise<Uint8Array>

Example

import { reorderPages } from "@manojcoder/pdf-utils";

async function runReorder(file: File) {
  // Reorders a 3-page PDF to sequence: page 3, page 1, page 2
  const sequence = [2, 0, 1];
  const bytes = await reorderPages(file, sequence);
  const blob = new Blob([bytes], { type: "application/pdf" });
  // Process blob...
}