{"id":926514,"date":"2025-06-07T02:22:32","date_gmt":"2025-06-07T02:22:32","guid":{"rendered":"https:\/\/proxyelite.info\/?p=926514"},"modified":"2025-06-07T02:22:33","modified_gmt":"2025-06-07T02:22:33","slug":"how-to-collect-public-data-from-websites-without-getting-blocked","status":"publish","type":"post","link":"https:\/\/proxyelite.info\/fr\/how-to-collect-public-data-from-websites-without-getting-blocked\/","title":{"rendered":"Comment collecter des donn\u00e9es publiques \u00e0 partir de sites Web sans \u00eatre bloqu\u00e9"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Le web scraping est essentiel pour les \u00e9tudes de march\u00e9, le r\u00e9f\u00e9rencement, le suivi du e-commerce, etc. Mais sans pr\u00e9cautions, votre adresse IP peut \u00eatre rapidement bannie. Voici comment rester discret tout en collectant des donn\u00e9es publiques en ligne, en toute s\u00e9curit\u00e9 et efficacit\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi les sites Web bloquent les scrapers<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Trafic inhabituel :<\/strong> Une fr\u00e9quence de demande \u00e9lev\u00e9e suscite des soup\u00e7ons.<\/li>\n\n\n\n<li><strong>Motifs r\u00e9p\u00e9t\u00e9s :<\/strong> Les m\u00eames IP frappent les m\u00eames URL.<\/li>\n\n\n\n<li><strong>En-t\u00eates manquants\u00a0:<\/strong> Manque de <code data-no-translation=\"\">User-Agent<\/code>, <code data-no-translation=\"\">Referer<\/code>, etc.<\/li>\n\n\n\n<li><strong>Rendu JavaScript\u00a0:<\/strong> Certains sites s&#039;attendent \u00e0 une ex\u00e9cution JS.<\/li>\n\n\n\n<li><strong>Restrictions du fichier Robots.txt\u00a0:<\/strong> Limites l\u00e9gales pour les robots d&#039;exploration.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3.png\" alt=\"un ordinateur avec un bouclier et des ic\u00f4nes autour\" class=\"wp-image-926517\" title=\"\" srcset=\"https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3.png 1024w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-600x600.png 600w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-150x150.png 150w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-768x768.png 768w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-12x12.png 12w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-75x75.png 75w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-120x120.png 120w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-24x24.png 24w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-48x48.png 48w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-96x96.png 96w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked3-300x300.png 300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Guide \u00e9tape par \u00e9tape pour \u00e9viter les blocages<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Utilisez un proxy fiable pour le Web Scraping<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Utilisant un <a href=\"https:\/\/proxyelite.info\/fr\/solutions\/proxies-for-web-scraping\/\" data-type=\"link\" data-id=\"https:\/\/proxyelite.info\/solutions\/proxies-for-web-scraping\/\"><strong>proxy pour le web scraping<\/strong> <\/a>vous aide \u00e0 faire pivoter les adresses IP, \u00e0 imiter les utilisateurs r\u00e9els et \u00e0 \u00e9viter la d\u00e9tection.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Type de mandataire<\/th><th>Meilleur cas d&#039;utilisation<\/th><th>Niveau de risque<\/th><th>Prix<\/th><\/tr><\/thead><tbody><tr><td><a href=\"https:\/\/proxyelite.info\/fr\/types\/datacenter-proxies\/\" data-type=\"link\" data-id=\"https:\/\/proxyelite.info\/types\/datacenter-proxies\/\">Centre de donn\u00e9es<\/a><\/td><td>Scraping en masse, suivi des prix<\/td><td>Moyen<\/td><td>$<\/td><\/tr><tr><td>R\u00e9sidentiel<\/td><td>Contenu prot\u00e9g\u00e9 par connexion<\/td><td>Faible<\/td><td>$$<\/td><\/tr><tr><td>Tournant<\/td><td>Grattage \u00e0 grande \u00e9chelle<\/td><td>Tr\u00e8s lent<\/td><td>$$$<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Conseil:<\/strong> Pour les donn\u00e9es publiques, les proxys de centres de donn\u00e9es rotatifs offrent souvent le meilleur \u00e9quilibre vitesse\/co\u00fbt.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Respectez la vitesse d&#039;exploration et ajoutez des d\u00e9lais<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ajouter <strong>1 \u00e0 3 secondes<\/strong> entre les demandes.<\/li>\n\n\n\n<li>Utiliser <strong>retards al\u00e9atoires<\/strong> pour \u00e9viter les sch\u00e9mas.<\/li>\n\n\n\n<li>Respect <code data-no-translation=\"\">Retry-After<\/code> en-t\u00eates.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Imitez les en-t\u00eates des utilisateurs r\u00e9els<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Inclure des en-t\u00eates tels que\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code data-no-translation=\"\">User-Agent<\/code><\/li>\n\n\n\n<li><code data-no-translation=\"\">Accept-Language<\/code><\/li>\n\n\n\n<li><code data-no-translation=\"\">Referer<\/code><\/li>\n\n\n\n<li><code data-no-translation=\"\">Cookies<\/code> (facultatif)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Simulez un comportement de navigation normal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Rotation des adresses IP et des agents utilisateurs<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Utilisez des outils tels que :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Intergiciels scrapy<\/li>\n\n\n\n<li>Marionnettiste + pool de proxy<\/li>\n\n\n\n<li>Plans de proxy rotatifs de ProxyElite (<a href=\"https:\/\/proxyelite.info\/fr\/types\/flexible-proxy-plan\/\" data-type=\"link\" data-id=\"https:\/\/proxyelite.info\/types\/flexible-proxy-plan\/\">lien<\/a>)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Chaque demande doit donner l\u2019impression qu\u2019elle vient d\u2019une personne diff\u00e9rente, d\u2019un endroit diff\u00e9rent.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Utilisez des navigateurs sans t\u00eate si n\u00e9cessaire<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Certaines pages chargent leur contenu de mani\u00e8re dynamique. Utilisez des outils comme\u00a0:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dramaturge<\/strong><\/li>\n\n\n\n<li><strong>S\u00e9l\u00e9nium<\/strong><\/li>\n\n\n\n<li><strong>Marionnettiste<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ajoutez des plugins furtifs pour \u00e9chapper \u00e0 la d\u00e9tection des robots.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6. V\u00e9rifiez et suivez Robots.txt<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Toujours v\u00e9rifier <code data-no-translation=\"\">robots.txt<\/code> avant de gratter.<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code data-no-translation=\"\">User-agent: *\nDisallow: \/admin\/\nAllow: \/public\/<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Ne grattez que ce qui est explicitement autoris\u00e9.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2.png\" alt=\"un homme assis devant un ordinateur portable\" class=\"wp-image-926516\" title=\"\" srcset=\"https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2.png 1024w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-600x600.png 600w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-150x150.png 150w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-768x768.png 768w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-12x12.png 12w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-75x75.png 75w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-120x120.png 120w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-24x24.png 24w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-48x48.png 48w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-96x96.png 96w, https:\/\/proxyelite.info\/wp-content\/uploads\/2025\/06\/How-to-Collect-Public-Data-from-Websites-Without-Getting-Blocked2-300x300.png 300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Consid\u00e9rations juridiques et \u00e9thiques<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Collecter uniquement <strong>donn\u00e9es publiques<\/strong>.<\/li>\n\n\n\n<li>\u00c9viter <strong>limitation de d\u00e9bit<\/strong> points de terminaison prot\u00e9g\u00e9s.<\/li>\n\n\n\n<li>Ajouter <strong>coordonn\u00e9es<\/strong> dans les en-t\u00eates si vous effectuez un scraping pour la recherche.<\/li>\n\n\n\n<li>\u00c9vitez de gratter <strong>donn\u00e9es personnelles ou sensibles<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Tableau r\u00e9capitulatif<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Conseil<\/th><th>Pourquoi \u00e7a marche<\/th><\/tr><\/thead><tbody><tr><td>Utiliser des proxys rotatifs<\/td><td>Emp\u00eache les interdictions de propri\u00e9t\u00e9 intellectuelle<\/td><\/tr><tr><td>Ajouter des d\u00e9lais de demande<\/td><td>Imite le comportement humain<\/td><\/tr><tr><td>Faire pivoter les en-t\u00eates<\/td><td>\u00c9vite les empreintes digitales des robots<\/td><\/tr><tr><td>Suivre <code data-no-translation=\"\">robots.txt<\/code><\/td><td>Continue \u00e0 gratter l&#039;\u00e9thique et la l\u00e9galit\u00e9<\/td><\/tr><tr><td>Rendu JS si n\u00e9cessaire<\/td><td>Aide \u00e0 collecter le contenu complet<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le scraping de sites web publics est un outil puissant, s&#039;il est bien fait. La cl\u00e9 du succ\u00e8s r\u00e9side dans sa capacit\u00e9 \u00e0 se fondre dans la masse. Un bon <strong>proxy pour le web scraping<\/strong>, combin\u00e9 \u00e0 des tactiques intelligentes, garantit que votre projet ne sera pas interrompu avant de commencer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Besoin d&#039;un proxy solide et abordable pour le web scraping ?<br>\ud83d\udc49 <a href=\"https:\/\/proxyelite.info\/fr\/prices\/\" data-type=\"link\" data-id=\"https:\/\/proxyelite.info\/prices\/\">Consultez les packages de centres de donn\u00e9es et de proxys rotatifs de ProxyElite<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Web scraping is essential for market research, SEO, e-commerce tracking, and more. But without precautions, your IP may get banned fast. Here\u2019s how to stay under the radar while collecting public data online \u2014 safely and effectively. Why Websites Block Scrapers Step-by-Step Guide to Avoid Blocks 1. Use a Reliable Proxy for Web Scraping Using [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":926515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-926514","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles"],"acf":[],"_links":{"self":[{"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/posts\/926514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/comments?post=926514"}],"version-history":[{"count":1,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/posts\/926514\/revisions"}],"predecessor-version":[{"id":926518,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/posts\/926514\/revisions\/926518"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/media\/926515"}],"wp:attachment":[{"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/media?parent=926514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/categories?post=926514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/proxyelite.info\/fr\/wp-json\/wp\/v2\/tags?post=926514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}