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RSS (format) - Définition

Source: Wikipédia sous licence CC-BY-SA 3.0.
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- Introduction - Aspects techniques - Modules

Introduction

Format RSS
L'icône des fils RSS sur Firefox et Internet Explorer 7.
Extension .rss, .xml
Type MIME application/rss+xml
Type de format Syndication de contenu
Extension du XML
Spécification Format ouvert
modifier 

RSS désigne une famille de formats XML utilisés pour la syndication de contenu Web.

Trois formats peuvent être désignés par ces initiales :

Mais on parle aussi souvent de RSS pour désigner le format Atom.

Aspects techniques

Le format RSS est un format XML, d'où la première ligne de l'exemple ci-dessous.

Exemple simple

       version="1.0" encoding="iso-8859-1"?>       version="2.0">          >              >Mon site>              >Ceci est un exemple de flux RSS 2.0>              >Sat, 07 Sep 2002 00:00:01 GMT>              >http://www.example.org>              >                  >Actualité N°1>                  >Ceci est ma première actualité>                  >Sat, 07 Sep 2002 00:00:01 GMT>                  >http://www.example.org/actu1>              >          >      >

Explication des principales balises

Le contenu d'un document RSS se situe toujours entre les balises . Elles possèdent obligatoirement un attribut version qui spécifie la version à laquelle le document RSS est conforme.

Au niveau suivant de cette balise se trouve une unique balise qui contiendra les métadonnées du flux RSS, obligatoires ou non, ainsi que la liste des contenus.

Métadonnées

En ce qui concerne les métadonnées, trois éléments sont obligatoires dans un channel:

  • </code> : Définit le titre du flux ;</li> <li><code><description></code> : Décrit succinctement le flux ;</li> <li><code><link></code> : Définit l'URL du site correspondant au flux.</li> </ul> <p>D'autres éléments optionnels existent comme :</p> <ul> <li><code><pubDate></code> : Définit la date de publication du flux ;</li> <li><code><lastBuildDate></code> : Définit la dernière date de modification du flux ; (RFC 822)</li> <li><code><image></code> : Permet d'insérer une image dans le flux ;</li> <li><code><language></code> : Définit la langue du flux.</li> </ul> <h4> <span class="mw-headline" id="Contenu_:_Description_de_chaque_article">Contenu : Description de chaque article</span></h4> <p>Pour chaque article, une balise <code><item></code> est ajoutée dans notre document.</p> <p>Dans cette balise se trouvent les <span class='lienGlossaire'><a href='https://www.techno-science.net/definition/222.html'>données</a></span> correspondantes à l'actualité sous forme de balise. Les balises les plus courantes sont :</p> <ul> <li><code><title></code> : Définit le titre de l'actualité ;</li> <li><code><link></code> : Définit l'URL du flux correspondant à l'actualité ;</li> <li><code><pubDate></code> : Définit la date de l'actualité ; (RFC 822)</li> <li><code><description></code> : Définit une description succincte de l'actualité ;</li> <li><code><guid></code> : Définit de manière unique l'actualité.</li> </ul> <p>Selon la DTD RSS 2.0, il doit y avoir au moins un <code><title></code> ou une <code><description></code> dans un item et le reste des balises est optionnel.</p> <p>D'autres balises existent comme :</p> <ul> <li><code><author></code> : Définit l'<span class='lienGlossaire'><a href='https://www.techno-science.net/glossaire-definition/Adresse-electronique.html'>adresse électronique</a></span> (mail) de l'auteur ;</li> <li><code><category></code> : Associe l'item à une catégorie ;</li> <li><code><comments></code> : Définit l'URL d'une page de commentaire en rapport avec l'item ;</li> </ul> <p>Il peut également arriver que l'on trouve d'autres balises dans un flux RSS, grâce aux espaces de noms (<i>namespaces</i>). On peut par exemple inclure de nouvelles fonctionnalités comme cela a été fait pour iTunes. 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height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/2026/01/25/9d6b30c0-5f87-4f4a-a049-43a05df6c043-jpg.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/2026/01/25/9d6b30c0-5f87-4f4a-a049-43a05df6c043-jpg.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71397#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28188" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/cette-etoile-vieillissante-pulse-plus-plus-vite-devons-nous-nous-attendre-N28188.html"><div class="lien">🌟 Cette étoile vieillissante pulse de plus en plus vite: à quoi devons-nous nous attendre ?</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769583605000"></span></div> </div> </div> <div class="titres pub" lazyload="view"><!--lazy <ins class="adsbygoogle" style="display:block" data-ad-format="fluid" data-ad-layout-key="-h1+16-52-fv+1bz" data-ad-client="ca-pub-6990544335324031" data-ad-slot="3794245011"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> lazy--></div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/lumiere-naturelle-contre-diabete-N28187.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Source/Universite-de-Geneve/2026/01/07/WEB-Banner-Cell-PR.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Source/Universite-de-Geneve/2026/01/07/WEB-Banner-Cell-PR.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71396#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28187" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/lumiere-naturelle-contre-diabete-N28187.html"><div class="lien">🔆 La lumière naturelle contre le diabète</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769583603000"></span></div> </div> </div> <div class="titres parite0" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/meilleur-exercice-physique-seniors-pas-celui-qu-on-pense-N28186.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/PXB/29/weight-plates-299537-1280.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/PXB/29/weight-plates-299537-1280.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71395#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28186" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/meilleur-exercice-physique-seniors-pas-celui-qu-on-pense-N28186.html"><div class="lien">💪 Le meilleur exercice physique pour les seniors n'est pas celui qu'on pense</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769576404000"></span></div> </div> </div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/pourquoi-terre-elle-refroidie-apres-disparition-dinosaures-N28185.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/2024/05/11/IG7w9DJOT96n9ychin0VKQ.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/2024/05/11/IG7w9DJOT96n9ychin0VKQ.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71394#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28185" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/pourquoi-terre-elle-refroidie-apres-disparition-dinosaures-N28185.html"><div class="lien">🌡️ Pourquoi la Terre s'est-elle refroidie après la disparition des dinosaures ?</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769576403000"></span></div> </div> </div> <div class="titres parite0" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/trou-noir-supermassif-tue-sa-propre-galaxie-N28184.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Source/SC/2026/01/25/jLX5UunM5VHSz4UY9rdQXU-1600-80.png' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Source/SC/2026/01/25/jLX5UunM5VHSz4UY9rdQXU-1600-80.png' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71387#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28184" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/trou-noir-supermassif-tue-sa-propre-galaxie-N28184.html"><div class="lien">🔭 Un trou noir supermassif a "tué" sa propre galaxie</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769515203000"></span></div> </div> </div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/cannabis-contre-douleur-finalement-efficace-pas-N28183.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/PXB/36/marijuana-3678222-1280.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/PXB/36/marijuana-3678222-1280.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71386#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28183" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);">1</div></a></div><a href="https://www.techno-science.net/actualite/cannabis-contre-douleur-finalement-efficace-pas-N28183.html"><div class="lien">🌿 La cannabis contre la douleur: finalement, efficace ou pas ?</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769515201000"></span></div> </div> </div> <div class="titres pub" lazyload="view"><!--lazy <ins class="adsbygoogle" style="display:block" data-ad-format="fluid" data-ad-layout-key="-h1+16-52-fv+1bz" data-ad-client="ca-pub-6990544335324031" data-ad-slot="3794245011"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> lazy--></div> <div class="titres parite0" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/ice-memory-sanctuaire-glace-siecles-venir-N28182.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/2026/01/26/cave-baloon-1751359060865-jpg.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/2026/01/26/cave-baloon-1751359060865-jpg.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71385#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28182" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/ice-memory-sanctuaire-glace-siecles-venir-N28182.html"><div class="lien">❄️ Ice Memory: un sanctuaire de glace pour les siècles à venir</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769497207000"></span></div> </div> </div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/metamateriaux-panneau-absorbe-diffuse-son-N28181.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <img src='https://static.techno-science.net/illustration-mini/Source/CNRS-INSIS/2026/01/12/Vector-field-800Hz.gif' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71384#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28181" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/metamateriaux-panneau-absorbe-diffuse-son-N28181.html"><div class="lien">🔊 Métamatériaux: un panneau qui absorbe et diffuse le son</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769497203000"></span></div> </div> </div> <div class="titres parite0" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/matiere-noire-ultrarelativiste-hypothese-cosmologique-innovante-N28180.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/PXB/79/explosion-7910812-1280.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/PXB/79/explosion-7910812-1280.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71383#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28180" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);">1</div></a></div><a href="https://www.techno-science.net/actualite/matiere-noire-ultrarelativiste-hypothese-cosmologique-innovante-N28180.html"><div class="lien">⚛️ La matière noire ultrarelativiste: une hypothèse cosmologique innovante</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769490005000"></span></div> </div> </div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/plus-80-ans-memoire-exceptionnelle-comment-possible-N28179.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/PXB/33/older-adult-3358587-1280.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/PXB/33/older-adult-3358587-1280.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71382#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28179" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/plus-80-ans-memoire-exceptionnelle-comment-possible-N28179.html"><div class="lien">🧠 Plus de 80 ans et une mémoire exceptionnelle: comment est-ce possible ?</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769490003000"></span></div> </div> </div> <div class="titres parite0" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/decouverte-etoile-morte-sillonne-univers-comme-bateau-fend-eau-N28178.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Source/SC/2026/01/18/26aztjBm3WqT2UgnHmtURe-1200-80.png' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Source/SC/2026/01/18/26aztjBm3WqT2UgnHmtURe-1200-80.png' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71367#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28178" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/decouverte-etoile-morte-sillonne-univers-comme-bateau-fend-eau-N28178.html"><div class="lien">🌠 Découverte d'une étoile morte qui sillonne l'Univers comme un bateau fend l'eau</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769428811000"></span></div> </div> </div> <div class="titres pub" lazyload="view"><!--lazy <ins class="adsbygoogle" style="display:block" data-ad-format="fluid" data-ad-layout-key="-h1+16-52-fv+1bz" data-ad-client="ca-pub-6990544335324031" data-ad-slot="3794245011"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> lazy--></div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/cet-iceberg-derivant-depuis-40-ans-change-subitement-couleur-pourquoi-N28177.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Source/SC/2026/01/25/vistNBPkDoah5gyH9adVCg-1920-80.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Source/SC/2026/01/25/vistNBPkDoah5gyH9adVCg-1920-80.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71366#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28177" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/cet-iceberg-derivant-depuis-40-ans-change-subitement-couleur-pourquoi-N28177.html"><div class="lien">❄️ Cet iceberg dérivant depuis 40 ans change subitement de couleur: pourquoi ?</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769428803000"></span></div> </div> </div> <div class="titres parite0" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/chine-depose-demande-lancer-constellation-200-000-satellites-N28176.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/2026/01/26/fe5d5edb-5b41-426b-bd88-7a401ab076b2-jpg.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/2026/01/26/fe5d5edb-5b41-426b-bd88-7a401ab076b2-jpg.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71365#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28176" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/chine-depose-demande-lancer-constellation-200-000-satellites-N28176.html"><div class="lien">🛰️ La Chine dépose une demande pour lancer une constellation de... 200 000 satellites !</div></a> <div class="entete"><span class="dateRelative" data-timestamp="1769410806000"></span></div> </div> </div> <div class="titres parite1" style="min-height:110px"> <a href="https://www.techno-science.net/actualite/fin-mythe-non-cerveau-arrete-pas-son-developpement-25-ans-quel-age-alors-N28175.html" aria-label="miniature"> <div class="miniature" style="width:110px; height:110px; overflow:hidden; position:relative;"> <picture> <source srcset='https://static.techno-science.net/illustrationWebp-mini/Libre/2025/09/24/brain-1845962-960-720.jpg' type='image/webp'> <img src='https://static.techno-science.net/illustration-mini/Libre/2025/09/24/brain-1845962-960-720.jpg' alt="miniature" style="width: 100%; height: 100%; object-fit: cover; object-position: center;" loading='lazy'> </picture> </div> </a> <div class="lienTitre"> <div class="entete2"><a href="https://www.techno-science.net/forum/viewtopic.php?t=71364#num1" target="_blank" aria-label="Forum"><div class="iconeCommentaires" nbCommentairesNewsID="28175" style="background-image:url(https://static.techno-science.net/graphisme/discussion.png);"></div></a></div><a href="https://www.techno-science.net/actualite/fin-mythe-non-cerveau-arrete-pas-son-developpement-25-ans-quel-age-alors-N28175.html"><div class="lien">🧠 Fin du mythe: non, le cerveau n'arrête pas son développement à 25 ans ! 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