{"id":3183,"date":"2025-06-12T13:44:19","date_gmt":"2025-06-12T12:44:19","guid":{"rendered":"https:\/\/gdksoftware.com\/?page_id=3183"},"modified":"2026-09-14T11:13:06","modified_gmt":"2026-09-14T10:13:06","slug":"online-delphi-pascal-compiler","status":"publish","type":"page","link":"https:\/\/gdksoftware.com\/nl\/online-delphi-pascal-compiler","title":{"rendered":"Online Delphi \/ Pascal Compiler: these are the best compilers"},"content":{"rendered":"<p><strong>You&#8217;re looking for a way to compile Delphi or Pascal code online? We&#8217;ve collected the best free and paid tools to finish the job. Let&#8217;s talk Delphi!<\/strong><\/p>\n<h3>What is a Delphi compiler?<\/h3>\n<p>A Delphi compiler is a software tool used to translate programs written in the Delphi programming language into an executable format. It translates Delphi source code into machine code that can be executed on a computer. The primary objective of a Delphi compiler is to compile and optimize the source code for execution.<\/p>\n<p>The compilation process involves translating readable Delphi source code into a format understandable by the computer processor. This includes identifying syntactical errors and optimizing instructions to ensure the program runs efficiently.<\/p>\n<p>Although some free online compilers may not be able to convert older versions of Delphi code to newer ones &#8211; for example, Delphi 4\/5\/6\/7 to Delphi 12 &#8211; they can still compile and debug the code. Compiling Delphi code using a Delphi compiler enables developers to build powerful and efficient applications for various platforms.<\/p>\n<h3>What are the best free Delphi compilers?<\/h3>\n<ul>\n<li>A free online Delphi compiler is the <strong><a href=\"https:\/\/www.onlinegdb.com\/online_pascal_compiler\" target=\"_blank\" rel=\"noopener\">Online Pascal Compiler from OnlineGDB<\/a><\/strong>. Add your code and test if it works. You can also beautify your Delphi code here.<\/li>\n<li>Another website where you can compile and run Pascal for free is <strong><a href=\"https:\/\/www.tutorialspoint.com\/compile_pascal_online.php\" target=\"_blank\" rel=\"noopener\">Tutorialspoint.com<\/a><\/strong>.<\/li>\n<li>Another option is <strong><a href=\"https:\/\/ideone.com\/\" target=\"_blank\" rel=\"noopener\">Ideaone.com<\/a><\/strong>.<\/li>\n<\/ul>\n<p>They all use the free Delphi compiler, <a href=\"https:\/\/gitlab.com\/freepascal.org\/fpc\" target=\"_blank\" rel=\"noopener\"><strong>Free Pascal<\/strong><\/a>. Free Pascal is a Pascal-compiler that supports the Delphi-syntax. Free Pascal is on GitLab, where you can find and download all files.<\/p>\n<h3>The best tool to upgrade Delphi: GDK Duster<\/h3>\n<p>Are you still using an old Delphi version and would you like to upgrade to a new version of Delphi? Then it is better to use the GDK Duster. The GDK Duster tools use the Delphi compiler to automatically compile programs, find errors, and modify code to fix these errors. Since all changes are done through actions, you can just grab the latest codebase and start the conversion every time. When developing the GDK Duster tool, we always kept automation in mind.<\/p>\n<p><img decoding=\"async\" class=\"wp-image-2618 aligncenter\" src=\"https:\/\/gdksoftware.com\/wp-content\/uploads\/2021\/05\/ed684602-67a9-481e-a425-a6f0f16041691.png\" alt=\"GDK Duster Delphi upgrade tool\" width=\"579\" height=\"361\" srcset=\"https:\/\/gdksoftware.com\/wp-content\/uploads\/2021\/05\/ed684602-67a9-481e-a425-a6f0f16041691.png 1312w, https:\/\/gdksoftware.com\/wp-content\/uploads\/2021\/05\/ed684602-67a9-481e-a425-a6f0f16041691-300x187.png 300w, https:\/\/gdksoftware.com\/wp-content\/uploads\/2021\/05\/ed684602-67a9-481e-a425-a6f0f16041691-768x479.png 768w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/><\/p>\n<p>Are you interested in a personal demo of GDK Duster, or are you looking for help converting a Delphi project? Please contact us at <a href=\"mailto:info@gdksoftware.com\">info@gdksoftware.com<\/a>.<\/p>\n<h3>Can you run Delphi-code directly in the browser?<\/h3>\n<p>No, not exactly. Free Pascal is pretty similar to Delphi, but there are differences. You can&#8217;t run Delphi applications in the browser, especially those with visual components, like VCL or FMX. If you want to run a Delphi application, you have to use a local IDE. The most popular one is Embarcadero RAD Studio.<\/p>\n<h3>What is the difference between Delphi and Free Pascal?<\/h3>\n<p>Free Pascal is open-source and &#8216;free&#8217; (pretty obvious, right?) and Delphi is a commercial product. They both support much of the same syntax. However, Free Pascal lack some Delphi-specific libraries, like VCL or FMX. Not all Delphi project will compile without changes.<\/p>\n<h3>Can you convert old Delphi code to modern versions automatically?<\/h3>\n<p>Partially. A tools like <span class=\"s1\">GDK Duster<\/span> can automate parts of the conversion, but manual intervention is often needed for UI changes, third-party libraries, and deprecated functions. The developers at GDK Software are happy to personally assist you with upgrading your Delphi project.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You&#8217;re looking for a way to compile Delphi or Pascal code online? We&#8217;ve collected the best free and paid tools to finish the job. Let&#8217;s talk Delphi! What is a Delphi compiler? A Delphi compiler is a software tool used to translate programs written in the Delphi programming language into an executable format. It translates [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-3183","page","type-page","status-publish","hentry"],"acf":{"type_hero":"img","hero_image":1067,"hero_image_position":"","hero_title":"The best online Delphi \/ Pascal compilers","hero_content":"","hero_link":null,"hero_show_h1":false,"flexible_content":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Compiling Delphi\/Pascal online? Compilers compared<\/title>\n<meta name=\"description\" content=\"The best compilers for Delphi\/Pascal compared. 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