{"id":2536944,"date":"2023-11-28T09:18:26","date_gmt":"2023-11-28T09:18:26","guid":{"rendered":"https:\/\/www.oodrive.com\/?p=2536944"},"modified":"2024-07-23T15:15:00","modified_gmt":"2024-07-23T15:15:00","slug":"signature-png-validite","status":"publish","type":"post","link":"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/","title":{"rendered":"La signature au format PNG : entre apparence et validit\u00e9 juridique"},"content":{"rendered":"\n<p>Qui n\u2019a jamais tent\u00e9 de signer un document PDF en y ins\u00e9rant un format PNG de sa signature manuscrite&nbsp;? <\/p>\n\n\n\n<p>Cette pratique de num\u00e9risation est bien souvent utilis\u00e9e \u00e0 tort comme une signature \u00ab&nbsp;\u00e9lectronique&nbsp;\u00bb. Mais a-t-elle une r\u00e9elle valeur juridique ? Que risquez-vous \u00e0 choisir le format PNG&nbsp;?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu&rsquo;est-ce qu&rsquo;une signature au format PNG ?<\/h2>\n\n\n\n<p>Le format PNG, ou Portable Network Graphics, est un format d&rsquo;image tr\u00e8s populaire en raison de sa capacit\u00e9 \u00e0 stocker des images sans perte de qualit\u00e9. <\/p>\n\n\n\n<p><strong>Une signature au format PNG est simplement une image num\u00e9rique<\/strong> <strong>d&rsquo;une signature manuscrite<\/strong>.<\/p>\n\n\n\n<p>Bien que moins cit\u00e9e comme format de signature en tant que tel, la signature PNG est par exemple r\u00e9guli\u00e8rement utilis\u00e9e pour signer des devis et bons de commande, certaines factures et autres contrats fournisseurs \u2026 <\/p>\n\n\n\n<p>Voici un cas d\u2019usage classique&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vous \u00eates client d\u2019un prestataire et recevez un courriel avec un devis sous le format PDF que vous devez signer.<\/li>\n\n\n\n<li>Vous ouvrez le PDF, et un onglet du logiciel Acrobat Reader vous propose de signer le document.<\/li>\n\n\n\n<li>Vous placez l\u2019image de votre signature \u2013 pr\u00e9alablement enregistr\u00e9e ou tout juste cr\u00e9\u00e9e \u2013 dans la case correspondante.<\/li>\n<\/ul>\n\n\n\n<p>Une pratique courante donc, et absolument l\u00e9gale<strong>. Cependant, elle ne vous prot\u00e8ge pas suffisamment, que vous soyez un professionnel ou un particulier, au regard de la loi.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Utilisation incorrecte : confondre la signature PNG avec la signature \u00e9lectronique<\/h3>\n\n\n\n<p>Bien que la signature PNG soit largement employ\u00e9e pour signer des documents \u00e9lectroniques, elle n\u2019est pas \u00e9quivalente \u00e0 la <a href=\"https:\/\/www.oodrive.com\/fr\/produits\/oodrive-sign\/\">signature \u00e9lectronique<\/a>.<\/p>\n\n\n\n<p>Et pour cause&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Une signature PNG est essentiellement une repr\u00e9sentation visuelle de la signature manuscrite<\/li>\n\n\n\n<li><strong>Une signature \u00e9lectronique englobe un ensemble sophistiqu\u00e9 de technologies, de protocoles de s\u00e9curit\u00e9 et de conformit\u00e9 r\u00e9glementaire.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Comparaison entre la signature PNG et la signature \u00e9lectronique<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"> S\u00e9curit\u00e9 et authenticit\u00e9<\/h3>\n\n\n\n<p>La s\u00e9curit\u00e9 et l&rsquo;authenticit\u00e9 constituent l&rsquo;un des principaux crit\u00e8res de comparaison entre la signature PNG et la signature \u00e9lectronique&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Une image PNG est vuln\u00e9rable \u00e0 la contrefa\u00e7on, car elle peut \u00eatre facilement copi\u00e9e, modifi\u00e9e, ou m\u00eame reproduite \u00e0 l\u2019identique<\/strong>. Ce qui ouvre la voie \u00e0 l\u2019usurpation d\u2019identit\u00e9 principalement et \u00e0 toutes les graves cons\u00e9quences qui en d\u00e9coulent. La signature au format PNG ne comporte aucune preuve d\u2019authenticit\u00e9 ni d\u2019identification de signataire.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>En revanche, la signature \u00e9lectronique repose sur des m\u00e9thodes avanc\u00e9es de cryptographie, garantissant l&rsquo;identit\u00e9 du signataire et la non-alt\u00e9ration du document<\/strong>. Elle vous apporte ainsi des niveaux de s\u00e9curit\u00e9 et d\u2019authenticit\u00e9 bien sup\u00e9rieurs.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Int\u00e9grit\u00e9 des donn\u00e9es<\/h3>\n\n\n\n<p>La signature \u00e9lectronique garantit <strong>l&rsquo;int\u00e9grit\u00e9 des documents en les liant de mani\u00e8re indissociable \u00e0 la signature elle-m\u00eame.<\/strong><\/p>\n\n\n\n<section class=\"product__section\" id=\"sign-banner\"><div class=\"product__section-container\"><p class=\"product__section-title\">Votre signature \u00e9lectronique<\/p><p class=\"product__section-description\">Fluidifiez et facilitez vos \u00e9changes avec une signature \u00e9lectronique conforme et s\u00e9curis\u00e9e.<\/p><img decoding=\"async\" src=\"..\/..\/..\/..\/wp-content\/plugins\/oodrive-blog-banners\/src\/img\/bg-banner_sign.svg\" class=\"product__section-bg\"\/><\/div><div class=\"product__section-link\"><img decoding=\"async\" src=\"..\/..\/..\/..\/wp-content\/plugins\/oodrive-blog-banners\/src\/img\/logo-sign-black-color.svg\" class=\"product__section-logo\" alt=\"oodrive sign\"\/><div class=\"cta\"><a href=\"https:\/\/www.oodrive.com\/fr\/produits\/oodrive-sign\/\">En savoir plus<\/a><\/div><\/div><\/section>\n\n\n\n<p><strong>Toute tentative de modification apr\u00e8s la signature est d\u00e9tect\u00e9e<\/strong>, offrant une protection contre la manipulation des informations. <\/p>\n\n\n\n<p>Inversement, les signatures PNG ne fournissent pas ce niveau de s\u00e9curit\u00e9, laissant les documents potentiellement vuln\u00e9rables \u00e0 des alt\u00e9rations non d\u00e9tect\u00e9es.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Valeur juridique<\/h3>\n\n\n\n<p>Devant un tribunal, en cas de litige sur un contrat par exemple, c\u2019est la conformit\u00e9 de la signature qui est v\u00e9rifi\u00e9e. <\/p>\n\n\n\n<p>Dans ce cas, la signature \u00e9lectronique bat le format PNG \u00e0 plate couture. La signature est valable si et seulement si l\u2019origine du signataire est prouv\u00e9e, et que l\u2019int\u00e9grit\u00e9 et l\u2019authenticit\u00e9 du document le sont aussi.<\/p>\n\n\n\n<p>Des lois telles que <strong>l&rsquo;ESIGN Act aux \u00c9tats-Unis et le <a href=\"https:\/\/www.oodrive.com\/fr\/guide\/eidas\/\">r\u00e8glement eIDAS<\/a> en Europe<\/strong> conf\u00e8rent une validit\u00e9 l\u00e9gale aux signatures \u00e9lectroniques, les consid\u00e9rant comme \u00e9quivalentes aux signatures manuscrites.<\/p>\n\n\n\n<p>\u00c0 l&rsquo;inverse, une signature PNG pourrait \u00eatre contest\u00e9e car non fiable aux yeux de la loi.<\/p>\n\n\n\n<p>D\u2019ailleurs, le <a href=\"https:\/\/www.oodrive.com\/fr\/guide\/logiciel-signature-electronique\/\">logiciel de signature \u00e9lectronique<\/a> Oodrive Sign assure une conformit\u00e9 l\u00e9gale en France et dans l&rsquo;Union Europ\u00e9enne, offrant des signatures \u00e9lectroniques juridiquement valables. <\/p>\n\n\n\n<p>Conformes au r\u00e8glement eIDAS, elles garantissent l&rsquo;ex\u00e9cution dans toute l&rsquo;UE et la valeur probante en droit, assurant l&rsquo;int\u00e9grit\u00e9, l&rsquo;authenticit\u00e9 et la validit\u00e9 juridique des documents. <\/p>\n\n\n\n<p>C\u2019est une solution s\u00e9curis\u00e9e qui r\u00e9pond aux exigences l\u00e9gales de la signature \u00e9lectronique.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tra\u00e7abilit\u00e9 et auditabilit\u00e9<\/h3>\n\n\n\n<p>L\u2019autre avantage majeur de la signature \u00e9lectronique r\u00e9side dans sa capacit\u00e9 \u00e0 fournir <strong>une tra\u00e7abilit\u00e9 et une auditabilit\u00e9 <\/strong>(autrement dit, ce que l\u2019on peut auditer\/contr\u00f4ler) compl\u00e8tes.<\/p>\n\n\n\n<p><strong>Chaque \u00e9tape du processus de signature \u00e9lectronique est enregistr\u00e9e<\/strong>, fournissant un historique d\u00e9taill\u00e9 de qui a sign\u00e9, quand, et quel document a \u00e9t\u00e9 sign\u00e9. <\/p>\n\n\n\n<p>Cela renforce la fiabilit\u00e9 des transactions et apporte une protection juridique suppl\u00e9mentaire en cas de litige.<\/p>\n\n\n\n<p class=\"has-red-sign-background-color has-background\">Bien que la signature PNG soit pratique et largement utilis\u00e9e \u00e0 des fins informelles, elle ne peut pas rivaliser avec la robustesse et la <a href=\"https:\/\/www.oodrive.com\/fr\/blog\/reglementation\/signature-electronique-valeur-juridique\/\">validit\u00e9 juridique inh\u00e9rentes \u00e0 la signature \u00e9lectronique<\/a>. La s\u00e9curit\u00e9 avanc\u00e9e, la reconnaissance l\u00e9gale, la tra\u00e7abilit\u00e9 et l&rsquo;auditabilit\u00e9 font de la signature \u00e9lectronique un choix incontestable pour les transactions professionnelles et contractuelles. C\u2019est la meilleure fa\u00e7on de garantir la s\u00e9curit\u00e9, l&rsquo;authenticit\u00e9, et la validit\u00e9 juridique de tous vos documents sign\u00e9s de mani\u00e8re d\u00e9mat\u00e9rialis\u00e9e.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Qui n\u2019a jamais tent\u00e9 de signer un document PDF en y ins\u00e9rant un format PNG de sa signature manuscrite&nbsp;? Cette pratique de num\u00e9risation est bien souvent utilis\u00e9e \u00e0 tort comme une signature \u00ab&nbsp;\u00e9lectronique&nbsp;\u00bb. Mais a-t-elle une r\u00e9elle valeur juridique ? Que risquez-vous \u00e0 choisir le format PNG&nbsp;? Qu&rsquo;est-ce qu&rsquo;une signature au format PNG ? Le [&hellip;]<\/p>\n","protected":false},"author":20,"featured_media":2537406,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1235],"class_list":["post-2536944","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-types-signature"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Signature PNG : risques, s\u00e9curit\u00e9 et validit\u00e9 | Oodrive<\/title>\n<meta name=\"description\" content=\"La signature PNG est un proc\u00e9d\u00e9 pratique mais sans valeur juridique, contrairement \u00e0 la signature \u00e9lectronique. D\u00e9couvrez les raisons\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Signature PNG : risques, s\u00e9curit\u00e9 et validit\u00e9 | Oodrive\" \/>\n<meta property=\"og:description\" content=\"La signature PNG est un proc\u00e9d\u00e9 pratique mais sans valeur juridique, contrairement \u00e0 la signature \u00e9lectronique. D\u00e9couvrez les raisons\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/\" \/>\n<meta property=\"og:site_name\" content=\"Oodrive\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-28T09:18:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-07-23T15:15:00+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.oodrive.com\/wp-content\/uploads\/2023\/11\/signature-png-validite-juridique-scaled.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1709\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Maxime Geffray\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Maxime Geffray\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/\"},\"author\":{\"name\":\"Maxime Geffray\",\"@id\":\"https:\/\/www.oodrive.com\/#\/schema\/person\/b02195df53ceaeed086a7494fc1aa6e3\"},\"headline\":\"La signature au format PNG : entre apparence et validit\u00e9 juridique\",\"datePublished\":\"2023-11-28T09:18:26+00:00\",\"dateModified\":\"2024-07-23T15:15:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/\"},\"wordCount\":886,\"publisher\":{\"@id\":\"https:\/\/www.oodrive.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.oodrive.com\/wp-content\/uploads\/2023\/11\/signature-png-validite-juridique-scaled.jpeg\",\"articleSection\":[\"Types de signature\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/\",\"url\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/\",\"name\":\"Signature PNG : risques, s\u00e9curit\u00e9 et validit\u00e9 | Oodrive\",\"isPartOf\":{\"@id\":\"https:\/\/www.oodrive.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.oodrive.com\/fr\/blog\/signature-electronique\/types-signature\/signature-png-validite\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.oodrive.com\/wp-content\/uploads\/2023\/11\/signature-png-validite-juridique-scaled.jpeg\",\"datePublished\":\"2023-11-28T09:18:26+00:00\",\"dateModified\":\"2024-07-23T15:15:00+00:00\",\"description\":\"La signature PNG est un proc\u00e9d\u00e9 pratique mais sans valeur juridique, contrairement \u00e0 la signature \u00e9lectronique. 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