Method flattenAll

src/api/pdf.ts:3046–3074

* Flatten all interactive content in the document. * * This is a convenience method that flattens: * - Layers (OCGs) - prevents hidden content attacks * - Form fields - converts to static text/graphics * - Annotations - bakes appearances into page content * * Use this before sig

(options?: FlattenAllOptions)

   * ```
   */
  flattenAll(options?: FlattenAllOptions): FlattenAllResult {
    // Flatten layers first (affects visibility of everything)
    const layerResult = this.flattenLayers();

    // Flatten form fields
    const form = this.getForm();
    let formFields = 0;

    if (form) {
      formFields = form.getFields().length;
      form.flatten(options?.form);
    }

    // Flatten annotations last (may reference form widgets which are now gone)
    // By default, remove Link annotations since they contain actions that
    // Adobe considers "hidden behavior" which can cause signature validation warnings.
    const annotationOptions = {
      removeLinks: true,
      ...options?.annotations,
    };

    const annotations = this.flattenAnnotations(annotationOptions);

    return {
      layers: layerResult.layerCount,
      formFields,
      annotations,
    };
  }

  // ─────────────────────────────────────────────────────────────────────────────
  // Text Extraction