{"id":11414,"date":"2022-09-27T08:08:40","date_gmt":"2022-09-27T02:38:40","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/"},"modified":"2022-09-27T08:08:40","modified_gmt":"2022-09-27T02:38:40","slug":"solved-how-to-detect-if-a-pdf-page-has-an-image-in-it","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/","title":{"rendered":"[Solved] How to detect if a PDF page has an image in it"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-53390225\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"53390225\" data-parentid=\"53324326\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>Using iText 5 you can find out whether images actually are shown on a page by parsing the page content into a custom <code>RenderListener<\/code> implementation. E.g.<\/p>\n<pre class=\"lang-java prettyprint-override\"><code>class ImageDetector implements RenderListener {\n    public void beginTextBlock() { }\n    public void endTextBlock() { }\n    public void renderText(TextRenderInfo renderInfo) { }\n\n    public void renderImage(ImageRenderInfo renderInfo) {\n        imageFound = true;\n    }\n\n    boolean imageFound = false;\n}\n<\/code><\/pre>\n<p>used like this:<\/p>\n<pre class=\"lang-java prettyprint-override\"><code>PdfReader reader = new PdfReader(resource);\nPdfReaderContentParser parser = new PdfReaderContentParser(reader);\nfor (int pageNumber = 1; pageNumber &lt;= reader.getNumberOfPages(); pageNumber++)\n{\n    ImageDetector imageDetector = new ImageDetector();\n    parser.processContent(pageNumber, imageDetector);\n    if (imageDetector.imageFound) {\n        \/\/ There is at least one image rendered on page i\n        \/\/ Thus, handle it as an image page\n    } else {\n        \/\/ There is no image rendered on page i\n        \/\/ Thus, handle it as a no-image page\n    }\n}\n<\/code><\/pre>\n<p>As a possible improvement: In a comment you mention <em>full-page-size images<\/em>. Thus, in the <code>ImageDetector<\/code> method <code>renderImage<\/code> you might want to check the image size before setting <code>imageFound<\/code> to <code>true<\/code>. Via the <code>ImageRenderInfo<\/code> parameter you can retrieve both information on how large the image is displayed on the page and how large it actually is.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">1<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How to detect if a PDF page has an image in it <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] Using iText 5 you can find out whether images actually are shown on a page by parsing the page content into a custom RenderListener implementation. E.g. class ImageDetector implements RenderListener { public void beginTextBlock() { } public void endTextBlock() { } public void renderText(TextRenderInfo renderInfo) { } public void renderImage(ImageRenderInfo renderInfo) { imageFound = &#8230; <a title=\"[Solved] How to detect if a PDF page has an image in it\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\" aria-label=\"More on [Solved] How to detect if a PDF page has an image in it\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1773,323,489],"class_list":["post-11414","post","type-post","status-publish","format-standard","hentry","category-solved","tag-itext","tag-java","tag-pdf"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How to detect if a PDF page has an image in it - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to detect if a PDF page has an image in it - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Using iText 5 you can find out whether images actually are shown on a page by parsing the page content into a custom RenderListener implementation. E.g. class ImageDetector implements RenderListener { public void beginTextBlock() { } public void endTextBlock() { } public void renderText(TextRenderInfo renderInfo) { } public void renderImage(ImageRenderInfo renderInfo) { imageFound = ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\" \/>\n<meta property=\"og:site_name\" content=\"JassWeb\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-27T02:38:40+00:00\" \/>\n<meta name=\"author\" content=\"Kirat\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Kirat\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\"},\"author\":{\"name\":\"Kirat\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\"},\"headline\":\"[Solved] How to detect if a PDF page has an image in it\",\"datePublished\":\"2022-09-27T02:38:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\"},\"wordCount\":106,\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"keywords\":[\"itext\",\"java\",\"pdf\"],\"articleSection\":[\"Solved\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\",\"url\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\",\"name\":\"[Solved] How to detect if a PDF page has an image in it - JassWeb\",\"isPartOf\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#website\"},\"datePublished\":\"2022-09-27T02:38:40+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/jassweb.com\/solved\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"[Solved] How to detect if a PDF page has an image in it\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/jassweb.com\/solved\/#website\",\"url\":\"https:\/\/jassweb.com\/solved\/\",\"name\":\"JassWeb\",\"description\":\"Build High-quality Websites\",\"publisher\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/jassweb.com\/solved\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/jassweb.com\/solved\/#organization\",\"name\":\"Jass Web\",\"url\":\"https:\/\/jassweb.com\/solved\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png\",\"contentUrl\":\"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png\",\"width\":693,\"height\":132,\"caption\":\"Jass Web\"},\"image\":{\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31\",\"name\":\"Kirat\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/jassweb.com\/solved\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750\",\"contentUrl\":\"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750\",\"caption\":\"Kirat\"},\"sameAs\":[\"http:\/\/jassweb.com\"],\"url\":\"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"[Solved] How to detect if a PDF page has an image in it - JassWeb","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/","og_locale":"en_US","og_type":"article","og_title":"[Solved] How to detect if a PDF page has an image in it - JassWeb","og_description":"[ad_1] Using iText 5 you can find out whether images actually are shown on a page by parsing the page content into a custom RenderListener implementation. E.g. class ImageDetector implements RenderListener { public void beginTextBlock() { } public void endTextBlock() { } public void renderText(TextRenderInfo renderInfo) { } public void renderImage(ImageRenderInfo renderInfo) { imageFound = ... Read more","og_url":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/","og_site_name":"JassWeb","article_published_time":"2022-09-27T02:38:40+00:00","author":"Kirat","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Kirat","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/#article","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/"},"author":{"name":"Kirat","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31"},"headline":"[Solved] How to detect if a PDF page has an image in it","datePublished":"2022-09-27T02:38:40+00:00","mainEntityOfPage":{"@id":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/"},"wordCount":106,"publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"keywords":["itext","java","pdf"],"articleSection":["Solved"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/","url":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/","name":"[Solved] How to detect if a PDF page has an image in it - JassWeb","isPartOf":{"@id":"https:\/\/jassweb.com\/solved\/#website"},"datePublished":"2022-09-27T02:38:40+00:00","breadcrumb":{"@id":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/jassweb.com\/solved\/solved-how-to-detect-if-a-pdf-page-has-an-image-in-it\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/jassweb.com\/solved\/"},{"@type":"ListItem","position":2,"name":"[Solved] How to detect if a PDF page has an image in it"}]},{"@type":"WebSite","@id":"https:\/\/jassweb.com\/solved\/#website","url":"https:\/\/jassweb.com\/solved\/","name":"JassWeb","description":"Build High-quality Websites","publisher":{"@id":"https:\/\/jassweb.com\/solved\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/jassweb.com\/solved\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/jassweb.com\/solved\/#organization","name":"Jass Web","url":"https:\/\/jassweb.com\/solved\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/","url":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","contentUrl":"https:\/\/jassweb.com\/wp-content\/uploads\/2021\/02\/jass-website-logo-1.png","width":693,"height":132,"caption":"Jass Web"},"image":{"@id":"https:\/\/jassweb.com\/solved\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/65c9c7b7958150c0dc8371fa35dd7c31","name":"Kirat","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/jassweb.com\/solved\/#\/schema\/person\/image\/","url":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750","contentUrl":"https:\/\/jassweb.com\/solved\/wp-content\/litespeed\/avatar\/1261af3c9451399fa1336d28b98ea3bb.jpg?ver=1775798750","caption":"Kirat"},"sameAs":["http:\/\/jassweb.com"],"url":"https:\/\/jassweb.com\/solved\/author\/jaspritsinghghumangmail-com\/"}]}},"_links":{"self":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/11414","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/comments?post=11414"}],"version-history":[{"count":0,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/posts\/11414\/revisions"}],"wp:attachment":[{"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/media?parent=11414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/categories?post=11414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jassweb.com\/solved\/wp-json\/wp\/v2\/tags?post=11414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}