{"id":654,"date":"2026-05-21T19:00:14","date_gmt":"2026-05-21T19:00:14","guid":{"rendered":"https:\/\/www.posadoble.eu\/en\/?p=654"},"modified":"2026-05-21T19:17:21","modified_gmt":"2026-05-21T19:17:21","slug":"may-2026-development-update","status":"publish","type":"post","link":"https:\/\/www.posadoble.eu\/en\/2026\/05\/21\/may-2026-development-update\/","title":{"rendered":"May 2026 development update"},"content":{"rendered":"\n<p>The main thing to report is that the printing module has made significant progress.<br>It is almost finished.<br>Some loose ends left to tie up.<\/p>\n\n\n\n<p>The printing module is a common way to print stuff from the web application on the server side (not in the browser).<\/p>\n\n\n\n<p>You can define a layout JSON format and the printing module will translate that into different formats:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>regular coordinate based canvas formats (the top left corner of the paper is 0,0), like PDFs.<br>These can be downloaded\/opened by the browser, or send directly to the printer via CUPS (Common Unix Printing System).<\/li>\n\n\n\n<li>ESC\/POS with a line based grid for Epson ticket printers. <br>Instead of coordinates, there are text lines. <br>The ESC\/POS adapter handles the translation from mm to lines.<br>There is support for Windows, CUPS, and LAN.<\/li>\n\n\n\n<li>ZPL (Zebra Programming Language) to talk to Zebra label printers via CUPS and LAN.<\/li>\n<\/ul>\n\n\n\n<p>Some improvements since last month<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The coordinate system of the printing system is now in millimeters.<br>This make it easier for reference for future drivers.<\/li>\n\n\n\n<li>Better error handling for invalid values in the JSON template<\/li>\n\n\n\n<li>ESC\/POS adapter is fully implemented<\/li>\n\n\n\n<li>ZPL adapter is fully implemented<\/li>\n<\/ul>\n\n\n\n<p>It was a lot of work, but we haven&#8217;t come across a sleek solution like this anywhere on the internet.<\/p>\n\n\n\n<p>This should make printing in web applications in general so much better and easier.<br>Which was always a weak point for websites used as applications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The main thing to report is that the printing module has made significant progress.It is almost finished.Some loose ends left to tie up. The printing module is a common way to print stuff from the web application on the server side (not in the browser). You can define a layout JSON format and the printing [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-654","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/posts\/654","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/comments?post=654"}],"version-history":[{"count":6,"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/posts\/654\/revisions"}],"predecessor-version":[{"id":664,"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/posts\/654\/revisions\/664"}],"wp:attachment":[{"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/media?parent=654"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/categories?post=654"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.posadoble.eu\/en\/wp-json\/wp\/v2\/tags?post=654"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}