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16px;border-radius:999px}.tp-tupts{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}.tp-tupts li{display:flex;align-items:center;gap:12px;font-size:clamp(16px,1.5vw,19px);font-weight:700;color:#fff}.tp-tupts li:before{content:\"\";flex:none;width:24px;height:24px;border-radius:50%;background:var(--p) url(\"data:image\/svg+xml,%3Csvg xmlns='http:\/\/www.w3.org\/2000\/svg' viewBox='0 0 22 22'%3E%3Cpath d='M6.2 11.4l3.2 3.2 6.4-6.8' fill='none' stroke='%231414b8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'\/%3E%3C\/svg%3E\") center\/24px no-repeat}.tp .tp-nav&gt;a.tu,.tp .tp-mm .pn a.tu{color:var(--p);font-weight:800}<div class=\"tp-en\"><header class=\"tp-hd\"><div class=\"tp-w\"><a class=\"tp-brand\" href=\"\/en\/\" aria-label=\"Terzidis Print\"><span class=\"tp-logo\"><\/span><span class=\"tp-reg\">\u00ae<\/span><\/a><nav class=\"tp-nav\" aria-label=\"Menu\"><a href=\"\/en\/ti-typonoume\/\">What we print<\/a><a class=\"tu\" href=\"\/en\/syskevasia-trofimon\/#true-up\">True-Up\u2122<\/a><a href=\"\/en\/poiotita\/\">Quality<\/a><a href=\"\/en\/arthra\/\">Articles<\/a><a href=\"\/en\/elegchos-pdf\/\">PDF check<\/a><a href=\"\/en\/i-etaireia\/\">Company<\/a><a href=\"\/pdf-x-4-i-pdf-x-1a\/?lang=el\" style=\"color:#ffdcff\">\u0395\u039b<\/a><a class=\"tp-btn in\" href=\"https:\/\/orders.terzidis.gr\/admin\/login\/?next=\/admin\/dashboard\/\">Customer login<\/a><a class=\"tp-btn pk\" href=\"\/en\/aitima-prosforas\/\">Request a quote<\/a><\/nav><div class=\"tp-mob\"><a class=\"tp-btn pk\" href=\"\/en\/aitima-prosforas\/\">Quote<\/a><details class=\"tp-mm\"><summary aria-label=\"Menu\"><i><\/i><i><\/i><i><\/i><\/summary><div class=\"pn\"><a href=\"\/en\/ti-typonoume\/\">What we print<\/a><a class=\"sub\" href=\"\/en\/syskevasia-ypsilon-prodiagrafon\/\">High-specification print<\/a><a class=\"sub\" href=\"\/en\/syskevasia-trofimon\/\">Food packaging<\/a><a class=\"sub\" href=\"\/en\/emporika-entypa\/\">Commercial print<\/a><a class=\"sub\" href=\"\/en\/ektyposi-offset\/\">Offset printing<\/a><a class=\"sub\" href=\"\/en\/finirisma-kai-metapoiisi\/\">Finishing and converting<\/a><a class=\"sub\" href=\"\/en\/prodiagrafes-archeion\/\">File specifications<\/a><a class=\"tu\" href=\"\/en\/syskevasia-trofimon\/#true-up\">True-Up\u2122<\/a><a href=\"\/en\/poiotita\/\">Quality<\/a><a href=\"\/en\/arthra\/\">Articles<\/a><a href=\"\/en\/elegchos-pdf\/\">PDF check<\/a><a href=\"\/en\/i-etaireia\/\">Company<\/a><a href=\"https:\/\/orders.terzidis.gr\/admin\/login\/?next=\/admin\/dashboard\/\">Customer login<\/a><a href=\"\/en\/aitima-prosforas\/\">Request a quote<\/a><a class=\"sub\" href=\"\/pdf-x-4-i-pdf-x-1a\/?lang=el\" style=\"color:#ffdcff\">\u0395\u03bb\u03bb\u03b7\u03bd\u03b9\u03ba\u03ac<\/a><\/div><\/details><\/div><\/div><\/header><main><section class=\"tp-hero bg-b\"><div class=\"tp-w\"><div class=\"tp-eb\">File preparation<\/div><h1 class=\"tp-h1\">PDF\/X-4 or PDF\/X-1a:<br><em>which standard to choose.<\/em><\/h1><\/div><\/section><section class=\"tp-sec bg-w\"><div class=\"tp-w\"><div class=\"tp-prose\" style=\"margin:0 auto\"><h3 class=\"tp-h3\">What PDF\/X is<\/h3><p>PDF\/X is a family of international ISO standards for exchanging print files. A PDF\/X file does not allow elements that cause problems in production: all fonts are embedded, images are contained in full, the finished size is defined explicitly and the printing conditions the file was prepared for are declared. What you see on screen is what reaches prepress.<\/p><h3 class=\"tp-h3\">PDF\/X-1a<\/h3><p>The older and stricter standard. All colours are CMYK or spot, and transparency is flattened on export. It is very safe, but flattening can break vector artwork into smaller pieces or leave hairlines where shadows and transparency meet.<\/p><h3 class=\"tp-h3\">PDF\/X-4<\/h3><p>The current standard, preferred today by most printers. It keeps transparency live and supports profile-based colour management, so the final conversion is made correctly in prepress. Text and vector artwork stay clean, without the side effects of flattening.<\/p><h3 class=\"tp-h3\">Which to choose<\/h3><ul class=\"tp-ul\"><li><b>PDF\/X-4<\/b> for most work: leaflets, catalogues, artwork with shadows, transparency and effects.<\/li><li><b>PDF\/X-1a:2001<\/b> when the end client explicitly requires it, or when the file will pass through several systems and maximum compatibility matters.<\/li><li><b>Not \u00abSmallest file size\u00bb or web export.<\/b> These settings compress images and may convert colour to RGB.<\/li><\/ul><h3 class=\"tp-h3\">How to export<\/h3><p>In your design application, choose the PDF\/X-4 (or PDF\/X-1a) preset in the export dialogue, switch on crop marks and 3 mm bleed, and set the output condition to match the paper of the job: one for coated and another for uncoated stock. If in doubt, ask us before exporting.<\/p><h3 class=\"tp-h3\">Check<\/h3><p>The free <a href=\"\/en\/elegchos-pdf\/\">PDF check<\/a> recognises whether a file is PDF\/X and flags RGB elements, fonts that are not embedded and low-resolution images. Every file is also checked technically by us before production.<\/p><p>For any job, send us your specifications with a <a href=\"\/en\/aitima-prosforas\/\">quote request<\/a>.<\/p><div><a class=\"tp-more\" href=\"\/en\/arthra\/\">\u2190 All articles<\/a><\/div><\/div><\/div><\/section><section class=\"tp-sec sm bg-p tp-cta\"><div class=\"tp-w\"><div><h2 class=\"tp-h2 sm\">Send us your job specification.<\/h2><p class=\"tp-lead\">Dimensions, quantity, substrate and number of colours. We reply with a technical proposal and a quotation.<\/p><\/div><a class=\"tp-btn bl lg\" href=\"\/en\/aitima-prosforas\/\">Request a quote<\/a><\/div><\/section><\/main><footer class=\"tp-ft\"><div class=\"tp-w\"><div class=\"cols\"><div><a class=\"tp-brand\" href=\"\/en\/\" aria-label=\"Terzidis Print\"><span class=\"tp-logo\"><\/span><span class=\"tp-reg\">\u00ae<\/span><\/a><div class=\"sl\">Right the first time.<br>Every time.<\/div><\/div><div><h4>What we print<\/h4><a href=\"\/en\/syskevasia-ypsilon-prodiagrafon\/\">High-specification print<\/a><a href=\"\/en\/syskevasia-trofimon\/\">Food packaging<\/a><a href=\"\/en\/emporika-entypa\/\">Commercial print<\/a><a href=\"\/en\/ektyposi-offset\/\">Offset printing<\/a><a href=\"\/en\/finirisma-kai-metapoiisi\/\">Finishing and converting<\/a><a href=\"\/en\/syskevasia-trofimon\/#true-up\">True-Up\u2122 method<\/a><\/div><div><h4>Company<\/h4><a href=\"\/en\/poiotita\/\">Quality<\/a><a href=\"\/en\/i-etaireia\/\">About us<\/a><a href=\"\/en\/arthra\/\">Articles<\/a><a href=\"\/en\/prodiagrafes-archeion\/\">File specifications<\/a><a href=\"\/en\/elegchos-pdf\/\">Free PDF check<\/a><a href=\"\/en\/syxnes-erotiseis\/\">FAQ<\/a><a href=\"\/en\/kariera\/\">Careers<\/a><a href=\"\/en\/parakolouthisi-paraggelias\/\">Customer login<\/a><\/div><div><h4>Contact<\/h4><a href=\"https:\/\/www.google.com\/maps\/search\/?api=1&amp;query=Terzidis+Print+Farsalon+166+Larissa\" target=\"_blank\" rel=\"noopener\">Farsalon 166, 413 35 Larissa, Greece \u2197<\/a><span>Monday\u2013Friday 07:30\u201315:30<\/span><a href=\"tel:+302410660188\">+30 2410 660 188<\/a><a href=\"mailto:info@terzidis.gr\">info@terzidis.gr<\/a><a href=\"https:\/\/www.linkedin.com\/company\/terzidis-print-pc\/\" rel=\"noopener\">LinkedIn<\/a><a href=\"https:\/\/www.instagram.com\/terzidis.print\/\" rel=\"noopener\">Instagram<\/a><\/div><\/div><div class=\"bt\"><div>TERZIDIS PRINT IKE \u00b7 ISO 9001:2015<\/div><div><a href=\"\/en\/politiki-aporritou\/\">Privacy and cookie policy<\/a><\/div><div>Offset printing for packaging and high-specification print, since 1978<\/div><\/div><\/div><\/footer><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>.eltdf-page-header,.eltdf-mobile-header,.eltdf-wrapper-inner&gt;footer,.eltdf-title,#eltdf-back-to-top,.eltdf-side-menu-button-opener{display:none!important}.eltdf-content{margin:0!important;padding:0!important}.eltdf-content .eltdf-content-inner&gt;.eltdf-full-width,.eltdf-full-width-inner,.eltdf-container,.eltdf-container-inner{padding:0!important;margin:0!important;width:100%!important;max-width:none!important}body{background:#fff!important}.tp,.tp *,.tp *:before,.tp *:after{box-sizing:border-box}.tp{&#8211;b:#1414b8;&#8211;n:#0f0f8f;&#8211;d:#0b0b5e;&#8211;p:#ffdcff;&#8211;s:#f1f1fa;&#8211;i:#12123a;&#8211;m:#3a3a5c;width:100%;font-family:&#8217;Manrope&#8217;,&#8217;Helvetica 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