Learn how to prepare print-ready packaging artwork and dielines for error-free commercial printing at Buddy Packaging UK.
Print-ready artwork requires accurate dimensions, correct colour formatting, vector typography, and appropriate bleed allowances to reproduce accurately on commercial presses. At Buddy Packaging UK, our prepress team inspects every submitted design file against strict technical standards and generates a free 3D digital proof for your final approval before physical production commences.
| Requirement | Production Standard |
|---|---|
| Accepted File Formats | Print-Ready PDF (PDF/X-1a, PDF/X-4), Adobe Illustrator (.AI), Photoshop (.PSD), Vector EPS |
| Image Resolution | 300 DPI at 100% physical scale for all raster imagery |
| Colour Space | CMYK (FOGRA39 / GRACoL profile) or specified Pantone (PMS) spot colours |
| Bleed Allowance | 3.0 mm for packaging boxes; 2.0 mm for vinyl stickers |
| Safe Zone Margin | 3.0 mm inside all cut and crease lines |
| Cut Line Specification | CutContour 100% Magenta spot vector stroke; 3.0 mm minimum line spacing |
| Typography | All text converted to vector outlines (curves); minimum font size 6pt (7pt reverse) |
| Line Weight Minimum | 0.25 pt (0.09 mm) positive print; 0.5 pt (0.18 mm) knockout/reverse |
| Speciality Finishes | Dedicated vector spot colour layer (100% spot fill) labeled Spot UV, Foil, or White |
| Proofing Service | Free interactive 3D digital proof provided before production commences |
We accept industry-standard vector and high-resolution raster files for commercial packaging and sticker production. For the most dependable results, we recommend submitting vector PDF files exported using PDF/X-1a or PDF/X-4 presets with embedded fonts and preserved layers. We also accept packaged Adobe Illustrator (.AI) files with linked assets, layered Adobe Photoshop (.PSD) files, and high-resolution Vector EPS documents. Office documents (Word, PowerPoint) or low-resolution raster exports (JPEG, PNG) are not suitable for commercial print production.
All embedded raster imagery, photographs, and complex textures must be supplied at a minimum resolution of 300 DPI (dots per inch) at 100% of the final printed scale. Supplying artwork at lower resolutions (such as standard web-grade 72 DPI images) results in visible pixelation, jagged edges, and soft details when transferred onto board or vinyl. Vector artwork, including company logos, clean line art, and typography, remains mathematically sharp at any scale.
All packaging and sticker files must be designed and supplied in CMYK (Cyan, Magenta, Yellow, Black) mode. Digital computer monitors display graphics in additive RGB colour, which encompasses a broader colour gamut than commercial printing inks can physically reproduce. Files submitted in RGB must be converted to CMYK, which can shift vibrant neon greens and electric blues to slightly muted tones. If your brand relies on exact colour consistency across packaging runs, specify Pantone Matching System (PMS) spot references in your artwork layers.
Bleed is the artwork area that extends beyond the physical cutline of your box or sticker. Because industrial high-speed guillotines and die-cutting machines experience minute mechanical movement (up to 1mm tolerance), background graphics must extend into the bleed area to prevent white paper borders appearing on the finished product. We require a 3mm bleed margin on all packaging cartons and a 2mm bleed margin on vinyl stickers. Additionally, keep all critical text, barcodes, and logos inside the 3mm inner safe zone.
For custom shape stickers and dielines, your cut path must be supplied as a clean vector stroke on a dedicated layer named 'CutContour'. Define this layer using a 100% Magenta spot colour set to non-printing. Maintain a minimum spacing of 3.0mm between adjacent cut lines to ensure clean, precise edges without tearing during the cutting process.
Before exporting your artwork, convert all active typography and text layers into vector outlines (curves/paths). If you leave live fonts embedded in a PDF or Illustrator document, our prepress workflow software may not recognise the specific font files, causing the system to automatically substitute a default system typeface. Converting fonts to vector paths freezes letterforms permanently, preventing accidental font reflow, kerning shifts, or missing glyph errors. We recommend a minimum font size of 6pt (7pt for reversed/knockout text) and a minimum line weight of 0.25pt.
Buddy Packaging UK provides custom vector dielines generated specifically to fit your product's unique length, width, and depth dimensions. Our dieline files feature colour-coded layers distinguishing cut lines, crease/score lines, and bleed boundaries. Always place your custom artwork on a dedicated 'Artwork' layer positioned beneath the dieline. Never alter the scale, delete guide notches, or flatten the dieline layer directly into your graphic artwork.
When ordering clear, holographic, silver, or metallic vinyl stickers, you must supply a dedicated spot colour layer named 'Hwhite' or 'White' to indicate where opaque ink should be printed beneath your design. Standard process inks are translucent; without a white base layer, the underlying metallic or transparent substrate will show through your design, diminishing contrast and readability. Areas left without white ink will showcase the natural metallic or clear effect.
Once you submit your design, our prepress specialists conduct a comprehensive technical audit covering resolution, colour mode, dieline alignment, bleed margins, and font integrity. Once validated, we issue a free interactive 3D digital proof displaying how your packaging or sticker looks fully assembled. Production will never proceed until you inspect and formally approve this digital proof, giving you complete confidence in the final physical outcome.
If our prepress checks discover technical errors—such as low-resolution imagery, missing bleed, font conflicts, or incorrect colour modes—we will never automatically print a compromised design. Instead, our prepress team flags the specific defect, explains exactly how to correct it in your design software, and assists with re-supplying the file. For minor adjustments like dieline positioning, our team can assist you directly to keep your project moving forward.
A high-resolution, print-ready PDF exported using PDF/X-1a or PDF/X-4 presets is the industry standard format. PDFs maintain vector sharpness, embed graphics cleanly, and preserve precise dieline layer structures. Alternatively, packaged Adobe Illustrator (.AI) files with outlined fonts and linked high-resolution assets are fully accepted by our prepress department.
Digital computer screens display colours using RGB light (Red, Green, Blue), which has a much wider colour spectrum than physical commercial inks. Commercial presses use CMYK pigments (Cyan, Magenta, Yellow, Black) which absorb light rather than emit it. Converting RGB graphics to CMYK can cause highly saturated tones to look slightly softer in physical print.
We require a 3mm bleed margin for all folding cartons and corrugated packaging boxes, and a 2mm bleed allowance for custom vinyl stickers. Bleed extends your background colours beyond the cutting boundary, ensuring no unwanted white paper edges appear if high-speed cutting machinery experiences minor mechanical movement.
Submitting graphics below 300 DPI can cause noticeable pixelation, blurred typography, and fuzzy photographic elements when printed commercially. If our prepress inspection detects low-resolution artwork, we will flag the issue on your digital proof and advise you to provide a higher-resolution asset before physical production begins.
Yes, Buddy Packaging UK provides a free interactive 3D digital proof for every single order. Our prepress team inspects your artwork file for technical compliance, dieline alignment, and bleed margins before rendering the 3D model. We never commence physical press production until you have thoroughly reviewed and approved this digital proof.
Never worry about print mistakes. Upon confirming your order, our packaging engineers verify artwork resolution, bleed margins, and precision die-lines, providing an interactive 3D digital proof so you see the exact finished outcome before production begins.