{"id":94800,"date":"2025-10-27T11:57:09","date_gmt":"2025-10-27T10:57:09","guid":{"rendered":"https:\/\/www.viafirma.com\/?post_type=faq&#038;p=94800"},"modified":"2025-11-17T10:42:57","modified_gmt":"2025-11-17T09:42:57","slug":"modifica-el-pdf-el-justificante-de-firma","status":"publish","type":"faq","link":"https:\/\/www.viafirma.com\/es\/faqs\/modifica-el-pdf-el-justificante-de-firma\/","title":{"rendered":"\u00bfAltera el PDF el justificante o sello de firma?"},"content":{"rendered":"<p>El justificante de firma, tambi\u00e9n conocido como stamper, sello o CSV (c\u00f3digo seguro de verificaci\u00f3n), NO modifica el contenido del PDF porque lo hacemos acorde al est\u00e1ndar de firma de PDF.<\/p>\n<p>Este est\u00e1ndar determina c\u00f3mo y d\u00f3nde se pueden\/deben usar estas \u00abrepresentaciones gr\u00e1ficas\u00bb (anotaciones seg\u00fan el diccionario de datos del PDF), y m\u00e1s en concreto, anotaciones asociadas a una firma electr\u00f3nica.<\/p>\n<p>Por tanto, y a modo de resumen, NO modifica el contenido. Se trata de una anotaci\u00f3n agregada en una capa habilitada para tal prop\u00f3sito en el diccionario de datos del est\u00e1ndar PDF.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-94795 aligncenter\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/04\/example_stamper.png\" alt=\"Ejemplo sello firma\" width=\"517\" height=\"61\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/04\/example_stamper.png 517w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/04\/example_stamper-300x35.png 300w\" sizes=\"auto, (max-width: 517px) 100vw, 517px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>En el contexto de Adobe Acrobat y los archivos PDF, una \u00abanotaci\u00f3n\u00bb es, b\u00e1sicamente, cualquier objeto o elemento que se a\u00f1ade sobre el contenido original del documento, sin modificar ese contenido base.<\/p>\n<p>Adobe simplemente te est\u00e1 informando de dos hechos correctos y paralelos:<\/p>\n<ul>\n<li>Que la <b>seguridad<\/b> de las firmas es v\u00e1lida.<\/li>\n<li>Que los <b>objetos visuales<\/b> que representan esas firmas existen en el documento y est\u00e1n clasificados como \u00abanotaciones\u00bb.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-94796 aligncenter\" src=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/04\/anotaciones_acrobat.jpg\" alt=\"Anotaciones en Acrobat Reader\" width=\"400\" height=\"529\" srcset=\"https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/04\/anotaciones_acrobat.jpg 400w, https:\/\/www.viafirma.com\/wp-content\/uploads\/2019\/04\/anotaciones_acrobat-227x300.jpg 227w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"no-sidebar","site-content-layout":"plain-container","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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