{"id":310,"date":"2022-11-03T07:00:00","date_gmt":"2022-11-03T06:00:00","guid":{"rendered":"https:\/\/www.fanny-dirriere.fr\/blog\/?p=310"},"modified":"2022-11-10T17:56:12","modified_gmt":"2022-11-10T16:56:12","slug":"vectoriel-et-pixel-quelles-differences","status":"publish","type":"post","link":"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/","title":{"rendered":"Vectoriel et pixel : quelles diff\u00e9rences\u00a0?"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Temps de lecture : <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min<\/span><\/span>\n<p class=\"wp-block-paragraph\"><strong>On vous a peut-\u00eatre dit que votre logo ou votre visuel n\u2019\u00e9tait pas vectoriel ou vectoris\u00e9&nbsp;? Dans cet article, je vous montre comment reconna\u00eetre un visuel vectoriel d\u2019un visuel compos\u00e9 de pixels.&nbsp;<\/strong><\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Au sommaire<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/#Comment_voir_si_une_image_est_vectorielle_ou_composee_de_pixels\" >Comment voir si une image est vectorielle ou compos\u00e9e de pixels&nbsp;?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/#Pourquoi_faut-il_vectoriser_un_logo_ou_un_design\" >Pourquoi faut-il vectoriser un logo ou un design ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/#Quel_est_lusage_dune_image_vectorielle\" >Quel est l\u2019usage d\u2019une image vectorielle ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/#Quel_est_lusage_dune_image_matricielle_pixels\" >Quel est l\u2019usage d\u2019une image matricielle (pixels) ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/#Ou_obtenir_son_logo_ou_son_fichier_au_format_vectoriel\" >O\u00f9 obtenir son logo ou son fichier au format vectoriel&nbsp;?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fanny-dirriere.fr\/blog\/vectoriel-et-pixel-quelles-differences\/#Pour_conclure\" >Pour conclure<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Comment_voir_si_une_image_est_vectorielle_ou_composee_de_pixels\"><\/span>Comment voir si une image est vectorielle ou compos\u00e9e de pixels&nbsp;?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Reconna\u00eetre le pixel (px)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tout d\u2019abord, l\u2019image <strong>pix\u00e9lis\u00e9e<\/strong> (ou aussi appel\u00e9 <strong>image matricielle<\/strong> ou <strong>image bitmap<\/strong>) se compose d\u2019une multitude de pixels invisibles \u00e0 l\u2019\u0153il nu. Ils peuvent \u00eatre visibles si vous zoomez par exemple sur une image. Ces <strong>petits carr\u00e9s<\/strong> se nomment des <strong>pixels<\/strong> (<strong>px<\/strong>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les photographies num\u00e9riques se composent de pixels, permettant un m\u00e9lange efficace des couleurs. En effet, chaque bloc de pixels comporte une couleur individuelle.&nbsp;C&rsquo;est pour cela qu&rsquo;une image semble \u00ab\u00a0pix\u00e9lis\u00e9e\u00a0\u00bb lorsqu&rsquo;elle est agrandie car vous pouvez voir les pixels individuellement.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"656\" src=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel-1024x656.jpg\" alt=\"Illustration - zoom sur une image r\u00e9alis\u00e9e en pixel\" class=\"wp-image-308\" srcset=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel-1024x656.jpg 1024w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel-300x192.jpg 300w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel-768x492.jpg 768w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel-1536x984.jpg 1536w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel-94x60.jpg 94w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/visuel-pixel.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Reconna\u00eetre le vectoriel<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un <strong>logo<\/strong> <strong>vectoriel<\/strong> ou une<strong> illustration vectorielle<\/strong> se cr\u00e9e \u00e0 partir d\u2019\u00e9quations math\u00e9matiques qui <strong>calculent les angles des formes<\/strong> et les mettent ainsi en relation les unes aux autres.&nbsp;Voici un exemple ci-dessous de mon logo avec ses formes dessin\u00e9es via un logiciel de cr\u00e9ation graphique.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"656\" src=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-1024x656.jpg\" alt=\"Logo vectoriel\" class=\"wp-image-305\" srcset=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-1024x656.jpg 1024w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-300x192.jpg 300w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-768x492.jpg 768w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-1536x984.jpg 1536w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-94x60.jpg 94w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">En zoomant sur votre visuel, la couleur et les formes s&rsquo;<strong>adaptent<\/strong>. Les lignes restent conserv\u00e9es peu importe la taille que vous choisirez pour votre visuel. Vous remarquerez aussi qu\u2019aucun pixel (petit carr\u00e9) ne s\u2019affiche si vous zoomez sur votre visuel. Petit ou grand format, la <strong>qualit\u00e9<\/strong> de votre visuel reste alors la m\u00eame.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le moyen le plus rapide de v\u00e9rifier sans acc\u00e8s \u00e0 un logiciel graphique est donc de <strong>zoomer<\/strong> le plus possible. Si l&rsquo;image ne perd pas en qualit\u00e9, il s&rsquo;agit alors d&rsquo;un visuel vectoriel. Vous pouvez le constater dans cet exemple ci-dessous : <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"705\" src=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel-1024x705.jpg\" alt=\"Exemple d\u2019un logo vectoriel et d\u2019un logo pixelis\u00e9\" class=\"wp-image-304\" srcset=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel-1024x705.jpg 1024w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel-300x206.jpg 300w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel-768x528.jpg 768w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel-1536x1057.jpg 1536w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel-87x60.jpg 87w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/logo-vectoriel-pixel.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Les formats de fichier du vectoriel et du pixel<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les <strong>logos<\/strong> ou <strong>illustrations vectorielles<\/strong> sont la plupart du temps cr\u00e9\u00e9es gr\u00e2ce \u00e0 Adobe Illustrator et ont g\u00e9n\u00e9ralement une extension : <strong>AI<\/strong>, <strong>EPS<\/strong> ou <strong>PDF<\/strong>. L&rsquo;extension <strong>SVG<\/strong> (\u00ab\u00a0Scalable Vector Graphics\u00a0\u00bb ou en fran\u00e7ais \u00ab\u00a0graphique vectoriel adaptable\u00a0\u00bb) est aussi un format de fichier vectoriel. Ce format est optimis\u00e9 pour le web. Ce dernier permet d&rsquo;\u00eatre redimensionn\u00e9 \u00e9galement \u00e0 volont\u00e9 sans perte de qualit\u00e9. Il est id\u00e9al pour les logos et les images en ligne complexes.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les visuels qui sont compos\u00e9s de <strong>pixels<\/strong> sont souvent cr\u00e9\u00e9s avec des logiciels comme Adobe Photoshop et peuvent contenir ces extensions : <strong>JPG<\/strong> (ou <strong>JPEG<\/strong>) <strong>PNG<\/strong>, <strong>TIFF<\/strong>, <strong>PSD<\/strong> ou encore <strong>BMP<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u26a0\ufe0f Attention, un fichier PDF n\u2019est pas forc\u00e9ment vectoriel si une illustration en pixels est int\u00e9gr\u00e9e dans un document r\u00e9alis\u00e9 sous Adobe Illustrator.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Comme dans l\u2019exemple ci-dessous,&nbsp;\u00e0 l\u2019int\u00e9rieur de ce document PDF, nous avons un premier visuel vectoriel et un second visuel en pixels. On peut alors voir en un coup d\u2019oeil les petits carr\u00e9s sur le second visuel. Vous pouvez \u00e9galement zoomer sur vos documents pour contr\u00f4ler la qualit\u00e9 de vos visuels.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"656\" src=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px-1024x656.jpg\" alt=\"Illustration - zoom sur une image r\u00e9alis\u00e9e en pixel\" class=\"wp-image-306\" srcset=\"https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px-1024x656.jpg 1024w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px-300x192.jpg 300w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px-768x492.jpg 768w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px-1536x984.jpg 1536w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px-94x60.jpg 94w, https:\/\/www.fanny-dirriere.fr\/blog\/wp-content\/uploads\/2022\/11\/pdf-vectoriel-px.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pourquoi_faut-il_vectoriser_un_logo_ou_un_design\"><\/span>Pourquoi faut-il vectoriser un logo ou un design ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les visuels pixelis\u00e9s ne peuvent pas \u00eatre agrandis \u00e0 l\u2019infini au risque de nuire \u00e0 la qualit\u00e9 de votre support. Il est impossible de faire varier l\u2019\u00e9chelle d\u2019une cr\u00e9ation graphique avec ce type de format.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019<strong>int\u00e9r\u00eat d\u2019avoir un logo ou un visuel vectoriel <\/strong>est de pouvoir le <strong>redimensionner \u00e0 volont\u00e9<\/strong>. M\u00eame avec de multiples agrandissements, le visuel sera toujours de <strong>qualit\u00e9<\/strong>.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En effet, comme les visuels sont cr\u00e9\u00e9s gr\u00e2ce \u00e0 des <strong>formules math\u00e9matiques<\/strong>, les lignes vectorielles qui compose l\u2019image sont automatiquement<strong> recalcul\u00e9es et adapt\u00e9es <\/strong>\u00e0 chaque changement de taille. Ceci permet d\u2019agrandir par exemple un logo \u00e0 volont\u00e9 et d\u2019obtenir le <strong>meilleur rendu<\/strong> possible.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quel_est_lusage_dune_image_vectorielle\"><\/span>Quel est l\u2019usage d\u2019une image vectorielle ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une <strong>image vectorielle<\/strong> s&rsquo;utilise pour des <strong>impressions en haute d\u00e9finition <\/strong>quelle que soit la taille du support. Vous pouvez donc utiliser ce format dans les cas suivants&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Logo,<\/li>\n\n\n\n<li>Illustrations,<\/li>\n\n\n\n<li>Supports de communication (carte de visite, flyer, d\u00e9pliant, affiche, packaging, kak\u00e9mono, panneau, pancarte\u2026),<\/li>\n\n\n\n<li>T-shirt,<\/li>\n\n\n\n<li>Signal\u00e9tique,<\/li>\n\n\n\n<li>Design d\u2019une enseigne ou d\u2019une vitrine,<\/li>\n\n\n\n<li>Habillage graphique des v\u00e9hicules, etc.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quel_est_lusage_dune_image_matricielle_pixels\"><\/span>Quel est l\u2019usage d\u2019une image matricielle (pixels) ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Une <strong>image matricielle<\/strong> se compose de <strong>pixels (px)<\/strong> et s&rsquo;utilise g\u00e9n\u00e9ralement pour un affichage sur <strong>\u00e9cran<\/strong>. Utilisez les images matricielles dans les cas suivants :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R\u00e9seaux sociaux (Facebook, Instagram, Twitter, LinkedIn\u2026),<\/li>\n\n\n\n<li>Site web,<\/li>\n\n\n\n<li>Application mobile,<\/li>\n\n\n\n<li>Newsletter,<\/li>\n\n\n\n<li>Banni\u00e8re publicitaire,&nbsp;<\/li>\n\n\n\n<li>Photographie, etc.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vous pouvez aussi partir d&rsquo;une image vectorielle et l&rsquo;enregistrer au format JPG ou PNG si vous souhaitez mettre en ligne un post par exemple sur vos r\u00e9seaux sociaux. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ou_obtenir_son_logo_ou_son_fichier_au_format_vectoriel\"><\/span>O\u00f9 obtenir son logo ou son fichier au format vectoriel&nbsp;?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La majorit\u00e9 des cr\u00e9ations graphiques produites par les illustrateurs, graphistes et concepteurs utilisent le vectoriel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si votre logo est pixelis\u00e9, vous n\u2019avez peut-\u00eatre pas utilis\u00e9 le bon fichier transmis lors de la cr\u00e9ation de votre logo. Si vous n\u2019avez pas ces fichiers, il sera alors difficile de vectoriser son logo sans connaissance. Je vous recommande donc de faire appel \u00e0 un graphiste. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N&rsquo;h\u00e9sitez pas \u00e0 choisir le meilleur graphiste pour vos projets ! Pour bien le choisir, je vous invite \u00e0 lire cet article : <a href=\"https:\/\/www.fanny-dirriere.fr\/blog\/comment-choisir-son-graphiste-freelance\/\" target=\"_blank\" rel=\"noreferrer noopener\">Comment choisir son graphiste freelance ?<\/a> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En cas de besoin, en tant que graphiste freelance, n&rsquo;h\u00e9sitez pas \u00e0 <a href=\"https:\/\/www.fanny-dirriere.fr\/contact\" target=\"_blank\" rel=\"noreferrer noopener\">me contacter<\/a> ! <\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pour_conclure\"><\/span>Pour conclure<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pour un logo, une illustration ou encore la r\u00e9alisation des supports de communication, privil\u00e9giez le format vectoriel pour garder une qualit\u00e9 optimale. Gr\u00e2ce \u00e0 ce format, vous pourrez alors utiliser votre visuel sur tous vos supports, \u00e0 la fois pour l\u2019impression comme pour les \u00e9crans.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Temps de lecture : <\/span> <span class=\"rt-time\"> 4<\/span> <span class=\"rt-label rt-postfix\">min<\/span><\/span>Votre logo ou votre visuel n\u2019est pas vectoriel ? Je vous montre comment reconna\u00eetre un visuel vectoriel d\u2019un visuel compos\u00e9 de pixels.\u00a0<\/p>\n","protected":false},"author":1,"featured_media":400,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-techniques","latest_post"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Vectoriel et pixel : quelles diff\u00e9rences\u00a0? - Blog \u00b7 Fanny Dirri\u00e8re<\/title>\n<meta name=\"description\" content=\"Votre logo ou votre visuel n\u2019est pas vectoriel ? 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