Print-Ready Artwork: What Your UK Designer Should Deliver (2026)

Quick answer: what “print-ready” actually means

A print-ready file is one a UK printer can send directly to press without modification. It hits six technical requirements:

1. Correct colour mode (CMYK for full-colour, or specific spot colours for Pantone)
2. 3mm bleed extending beyond the trim edge on all sides
3. Crop / trim marks indicating where the printer should cut
4. 0.25pt safe zone: no important content within 3mm of trim edge
5. Fonts either outlined (converted to shapes) or embedded
6. 300dpi minimum resolution for all raster images

Files that fail any one of these aren’t print-ready. UK printers will either reject the file, charge a “pre-press” fee to fix it (£20-£100 typical), or print it badly. Either way, it costs you time and money.

Print-ready artwork is on the same fixed-price list as everything else we design; the full print and design price list is worth a look before you brief a printer.

Why the six requirements exist

1. CMYK colour mode

Screens display in RGB (red, green, blue). Printers print in CMYK (cyan, magenta, yellow, black). Files saved in RGB will print with shifted colours, usually muddier and less vibrant than expected. The conversion must happen on the designer’s side, not the printer’s, so the designer can review and adjust the CMYK colours.

2. 3mm bleed

Printers cut sheets slightly imprecisely. If your design has a background colour that goes right to the edge, the cut might leave a thin white sliver at the edge. Bleed extends the background 3mm beyond the trim edge so any cut variation hides in the bleed area.

3. Crop marks

Small marks at each corner of the design showing exactly where the printer should cut. Without crop marks the printer guesses based on the file size, often incorrectly.

4. Safe zone (0.25pt safe area)

The opposite of bleed: critical text, logos, and design elements should be at least 3mm INSIDE the trim edge. If the cut happens slightly inward, the safe zone ensures nothing important is sliced off.

5. Outlined or embedded fonts

If you send a print PDF with fonts only “referenced” (not embedded or outlined), and the printer doesn’t have those exact fonts installed, the printer’s system will substitute fonts, destroying the design. Outlining converts fonts to shapes; embedding includes the font file in the PDF.

6. 300dpi raster images

Screen images can be 72dpi and look fine. Printed images need 300dpi minimum to look sharp. A low-resolution image stretched to A4 size will look pixelated when printed.

File formats UK printers accept (and why)

PDF/X-1a (most universal)

The print industry standard. Embeds all fonts, flattens transparency, locks in CMYK colour. Most UK printers prefer or require this format. Adobe InDesign, Illustrator, and Acrobat all export PDF/X-1a directly.

PDF/X-4 (more advanced, less universal)

Allows live transparency. Better for complex designs. Some UK printers don’t support it; check before sending.

AI (Adobe Illustrator)

Native format. Most UK trade printers accept Illustrator files but prefer PDF for press. Save as Illustrator CC or earlier for compatibility.

INDD (Adobe InDesign)

Native InDesign format. Some UK printers accept; many prefer the InDesign-exported PDF.

EPS (legacy vector)

Older format, still accepted by most UK printers for simple jobs. Less reliable than PDF for complex documents.

JPG, PNG, PSD

Only acceptable for projects that are entirely raster: photography prints, photo books. Not suitable for designs with text or vector elements.

Common print-ready mistakes

The “RGB submitted as PDF” mistake

Designer worked in RGB throughout (because it looked good on screen), exported as PDF without converting to CMYK. The printer converts at press time, with unpredictable colour shifts. Always work in CMYK from the start.

The “logo as low-resolution PNG” mistake

Logo dropped into the design as a 72dpi PNG file. Looks fine in the PDF preview, prints as a fuzzy mess. Logos should ALWAYS be vector (AI, EPS, SVG embedded in the design).

The “missing fonts” mistake

Designer used a font on their machine, exported the PDF, sent to printer. The PDF didn’t embed the font. The printer prints with a substitute font that looks completely different. Outline all fonts before export to avoid this.

The “no bleed” mistake

The design has a coloured background going to the edge, but the artwork file is sized exactly to trim dimensions with no extra bleed. Result: thin white slivers at the edge after cutting. Bleed must be set up from the start of the design, adding it later is messy.

The “spot colour confusion” mistake

Designer specified a Pantone spot colour but the file was set to CMYK. The Pantone reference doesn’t print at press; instead the closest CMYK approximation prints (which can be visibly different). For spot colours, the file must explicitly set the spot ink.

What to ask your UK designer to confirm files are print-ready

• “Are the files set up in CMYK colour mode throughout?”
• “Is there 3mm bleed on all four sides?”
• “Have all fonts been outlined or embedded in the export?”
• “Are all images at least 300dpi at final size?”
• “Have crop marks been included on the export?”
• “Is the PDF saved as PDF/X-1a or PDF/X-4?”

If your designer can’t answer these confidently, the file isn’t print-ready. A professional UK designer should respond with all six answers within minutes.

Checking print-readiness yourself in Adobe Acrobat

Output Preview (Tools → Print Production → Output Preview)

Shows the actual colour mode of every element. RGB elements show in colour highlighting; CMYK shows as normal. Easy visual confirmation.

Preflight (Tools → Print Production → Preflight)

Runs an automatic check against print industry profiles. Reports any issues with colour, resolution, fonts, bleed. Choose “Magazine Ads (SWOP)” or “PDF/X-1a” profile for a thorough check.

Object Inspector

Click any element to see its properties: colour mode, resolution, font usage. Useful for spot-checking.

When to use a pre-press service vs handle it yourself

Self-fix if

The file is mostly print-ready with one or two small issues (font outlining, exporting with crop marks). Anyone comfortable with Acrobat Pro can fix these in 5-15 minutes.

Pre-press service if

The file has multiple issues (RGB throughout + missing fonts + no bleed). Most UK printers offer pre-press at £20-£100. Fiverr has UK-based pre-press specialists from £15. Our own print-ready artwork service starts at £49 and returns a single press-ready PDF.

Re-commission from the designer if

The file fundamentally isn’t print-ready because the design itself doesn’t accommodate bleed or uses raster logos. This isn’t a fix; it’s a re-design. Push back to the designer rather than paying a pre-press service.

Sources & Further Reading

• British Printing Industries Federation, BPIF
• Preflight PDFs, Adobe, Adobe
• The Design Economy 2026, Design Council