{"id":2389,"date":"2026-03-06T16:19:51","date_gmt":"2026-03-06T08:19:51","guid":{"rendered":"https:\/\/updates.visual-paradigm.com\/vn\/releases\/how-to-unlock-a-pdf-file\/"},"modified":"2026-03-06T16:19:51","modified_gmt":"2026-03-06T08:19:51","slug":"how-to-unlock-a-pdf-file","status":"publish","type":"releases","link":"https:\/\/updates.visual-paradigm.com\/vn\/releases\/how-to-unlock-a-pdf-file\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 m\u1edf kh\u00f3a m\u1ed9t t\u1ec7p PDF"},"content":{"rendered":"<p>B\u1ea1n c\u00f3 th\u1ec3 m\u00e3 h\u00f3a v\u00e0 b\u1ea3o v\u1ec7 c\u00e1c t\u1ec7p PDF b\u1eb1ng m\u1eadt kh\u1ea9u \u0111\u1ec3 b\u1ea3o v\u1ec7 th\u00f4ng tin nh\u1ea1y c\u1ea3m. N\u1ebfu b\u1ea1n kh\u00f4ng c\u00f2n c\u1ea7n b\u1ea3o v\u1ec7, b\u1ea1n c\u00f3 th\u1ec3 nhanh ch\u00f3ng x\u00f3a m\u1eadt kh\u1ea9u t\u1ec7p PDF kh\u1ecfi c\u00e1c t\u00e0i li\u1ec7u PDF b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng<a href=\"https:\/\/online.visual-paradigm.com\/online-pdf-editor\/\">C\u00f4ng c\u1ee5 ch\u1ec9nh s\u1eeda PDF tr\u1ef1c tuy\u1ebfn c\u1ee7a Visual Paradigm<\/a>. Trong b\u00e0i vi\u1ebft n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 th\u1ea5y c\u00e1ch m\u1edf kh\u00f3a t\u1ec7p PDF c\u1ee7a m\u00ecnh trong v\u00e0i gi\u00e2y b\u1eb1ng c\u00e1ch x\u00f3a m\u1eadt kh\u1ea9u kh\u1ecfi t\u1ec7p PDF b\u1eb1ng c\u00f4ng c\u1ee5 c\u1ee7a ch\u00fang t\u00f4i<a href=\"https:\/\/online.visual-paradigm.com\/online-pdf-editor\/\">tr\u00ecnh ch\u1ec9nh s\u1eeda PDF tr\u1ef1c tuy\u1ebfn<\/a>.<\/p>\n<p><!--more--><\/p>\n<p><iframe allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\" frameborder=\"0\" height=\"281\" referrerpolicy=\"strict-origin-when-cross-origin\" src=\"https:\/\/www.youtube.com\/embed\/3Nf_iI7Y4zg?feature=oembed\" title=\"How to Unlock a PDF File\" width=\"500\"><\/iframe><\/p>\n<h3><strong>M\u1edf kh\u00f3a m\u1ed9t t\u1ec7p PDF<\/strong><\/h3>\n<ol>\n<li>Sau khi \u0111\u0103ng nh\u1eadp v\u00e0o kh\u00f4ng gian l\u00e0m vi\u1ec7c Visual Paradigm Online c\u1ee7a b\u1ea1n, h\u00e3y truy c\u1eadp B\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 ch\u1ecdn \u1ee8ng d\u1ee5ng, PDF, \u0111\u1ec3 chuy\u1ec3n \u0111\u1ebfn kh\u00f4ng gian l\u00e0m vi\u1ec7c PDF c\u1ee7a b\u1ea1n.\n<p id=\"UNurrOS\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone size-full wp-image-2115\" decoding=\"async\" fetchpriority=\"high\" height=\"275\" src=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05a04630.png\" width=\"218\"\/><\/p>\n<\/li>\n<li>Nh\u1ea5n n\u00fat \u201cC\u00d4NG C\u1ee4\u201d v\u00e0 ch\u1ecdn \u201cM\u1edf kh\u00f3a PDF\u201d.\n<p id=\"dhZtWIH\"><img alt=\"\" class=\"alignnone size-full wp-image-2116\" decoding=\"async\" height=\"546\" sizes=\"(max-width: 503px) 100vw, 503px\" src=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05cb808d.png\" srcset=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05cb808d.png 503w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05cb808d-276x300.png 276w\" width=\"503\"\/><\/p>\n<\/li>\n<li>T\u1ea3i l\u00ean t\u1ec7p PDF c\u1ee7a b\u1ea1n, t\u1ec7p n\u00e0y b\u1ecb kh\u00f3a b\u1eb1ng m\u1eadt kh\u1ea9u.\n<p id=\"nLOhyKU\"><img alt=\"\" class=\"alignnone size-full wp-image-2117\" decoding=\"async\" height=\"512\" sizes=\"(max-width: 1285px) 100vw, 1285px\" src=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05fbd544.png\" srcset=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05fbd544.png 1285w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05fbd544-300x120.png 300w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05fbd544-1024x408.png 1024w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f05fbd544-768x306.png 768w\" width=\"1285\"\/><\/p>\n<\/li>\n<li>B\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u nh\u1eadp m\u1eadt kh\u1ea9u c\u1ee7a n\u00f3.\n<p id=\"JScgkbY\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-2118\" decoding=\"async\" height=\"277\" loading=\"lazy\" sizes=\"auto, (max-width: 651px) 100vw, 651px\" src=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0630bcee.png\" srcset=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0630bcee.png 651w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0630bcee-300x128.png 300w\" width=\"651\"\/><\/p>\n<\/li>\n<li>Sau khi nh\u1eadp \u0111\u00fang m\u1eadt kh\u1ea9u, t\u1ec7p s\u1ebd \u0111\u01b0\u1ee3c t\u1ea3i v\u00e0o VP Online. Nh\u1ea5n n\u00fat \u201cM\u1ede KH\u00d3A\u201d \u0111\u1ec3 x\u00f3a kh\u00f3a m\u1eadt kh\u1ea9u c\u1ee7a n\u00f3.\n<p id=\"yvWFxvv\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-2119\" decoding=\"async\" height=\"70\" loading=\"lazy\" sizes=\"auto, (max-width: 393px) 100vw, 393px\" src=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f065afd13.png\" srcset=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f065afd13.png 393w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f065afd13-300x53.png 300w\" width=\"393\"\/><\/p>\n<\/li>\n<li>Khi ho\u00e0n t\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ed5i t\u00ean t\u1ec7p PDF n\u1ebfu c\u1ea7n, sau \u0111\u00f3 nh\u1ea5n n\u00fat \u201cT\u1ea2I XU\u1ed0NG\u201d \u0111\u1ec3 t\u1ea3i v\u1ec1, v\u00e0 gi\u1edd t\u1ec7p PDF c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf m\u00e0 kh\u00f4ng c\u1ea7n m\u1eadt kh\u1ea9u.\n<p id=\"LodnUxA\"><img loading=\"lazy\" alt=\"\" class=\"alignnone size-full wp-image-2120\" decoding=\"async\" height=\"344\" loading=\"lazy\" sizes=\"auto, (max-width: 1311px) 100vw, 1311px\" src=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0687b248.png\" srcset=\"https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0687b248.png 1311w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0687b248-300x79.png 300w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0687b248-1024x269.png 1024w, https:\/\/updates.visual-paradigm.com\/wp-content\/uploads\/2026\/03\/img_69a8f0687b248-768x202.png 768w\" width=\"1311\"\/><\/p>\n<\/li>\n<\/ol>\n<h5><strong>M\u1edf kh\u00f3a t\u1ec7p PDF tr\u1ef1c tuy\u1ebfn, d\u1ec5 d\u00e0ng v\u00e0 mi\u1ec5n ph\u00ed tr\u00ean<a href=\"https:\/\/online.visual-paradigm.com\/online-pdf-editor\/\">Tr\u00ecnh ch\u1ec9nh s\u1eeda VP Online<\/a>.<\/strong><\/h5>\n","protected":false},"featured_media":2390,"template":"","meta":{"_acf_changed":false,"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product":[],"product-area":[],"version":[],"release-type":[],"class_list":["post-2389","releases","type-releases","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 m\u1edf kh\u00f3a m\u1ed9t t\u1ec7p PDF - Visual Paradigm Product Updates Vietnamese<\/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:\/\/updates.visual-paradigm.com\/vn\/releases\/how-to-unlock-a-pdf-file\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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