Function main

examples/03-forms/fill-text-fields.ts:13–110

()

import { formatBytes, loadFixture, saveOutput } from "../utils";

async function main() {
  console.log("Filling text fields in a PDF form...\n");

  // Load a PDF with form fields
  const bytes = await loadFixture("forms", "fancy_fields.pdf");
  const pdf = await PDF.load(bytes);

  // Get the form
  const form = pdf.getForm();
  if (!form) {
    console.log("This PDF does not contain a form.");
    return;
  }

  // List all text fields
  const textFields = form.getTextFields();
  console.log("=== Available Text Fields ===");
  for (const field of textFields) {
    console.log(`  - "${field.name}" (current: "${field.getValue() || "(empty)"}")`);
  }
  console.log("");

  // Fill text fields by name
  console.log("=== Filling Text Fields ===");

  for (const field of textFields) {
    // Get the field by name
    const textField = form.getTextField(field.name);
    if (!textField) {
      continue;
    }

    // Skip read-only fields
    if (field.isReadOnly()) {
      console.log(`Skipping "${field.name}" - read-only`);
      continue;
    }

    // Generate a sample value based on field name
    let value: string;
    const nameLower = field.name.toLowerCase();

    if (nameLower.includes("name")) {
      value = "John Doe";
    } else if (nameLower.includes("email")) {
      value = "john.doe@example.com";
    } else if (nameLower.includes("phone") || nameLower.includes("tel")) {
      value = "(555) 123-4567";
    } else if (nameLower.includes("address")) {
      value = "123 Main Street";
    } else if (nameLower.includes("city")) {
      value = "Springfield";
    } else if (nameLower.includes("state")) {
      value = "IL";
    } else if (nameLower.includes("zip") || nameLower.includes("postal")) {
      value = "62701";
    } else if (nameLower.includes("date")) {
      value = new Date().toISOString().split("T")[0] ?? "";