Why does my packaging artwork have a white edge after cutting?

Read the supplier template first

Identify the approved cutting and folding template, scale, units and artwork version. Ask the supplier to specify bleed and critical-content clearances for the actual process. Do not treat a commonly mentioned millimeter value as universal. Tolerances and production methods differ, and a concept image is not the manufacturing template.

Adobe distinguishes bleed outside the page edge from other production information such as slug areas. Use those concepts to inspect the final file, but follow your printer’s actual packaging requirements. A decorative frame exactly on a cut edge can make small cutting variation very visible.

Separate the three regions

Do not scale the entire artwork merely to manufacture bleed: doing so can move logos, panel labels and barcodes. Extend the appropriate background while preserving intentional geometry.

Inspect the flat export at actual scale

For a fictional illustrated carton, compare the exported PDF or artwork with the approved template. Follow the background beyond every relevant cut edge and inspect folds separately. Check that export settings did not crop off an allowance present in the editing file. A screenshot of the design canvas is weaker evidence than the actual file received by the printer.

Fictional rectangular-panel arithmetic only: if a printer specifies a 100 × 60 mm finished panel with 3 mm bleed on every side, the background extent is 106 × 66 mm before any requested marks or slug. The finished trim remains 100 × 60 mm. This assumes a simple rectangle and that particular instruction; it is not a template for a carton’s irregular cut/fold geometry or a universal bleed amount. Move neither the finished size nor approved text positions merely to enlarge the background.

Diagnose the received file in two steps. If the editing file has adequate extended art but the actual export ends at trim, inspect that export’s page/box and bleed settings with the supplier. If the export includes the specified region but the artwork itself stops at trim, changing only an export checkbox will not create background pixels or geometry. Check the exact file the printer received, then compare its version and physical sample. Adobe separates bleed from trim and slug; it also directs readers to confirm provider requirements.

Use a cut sample to close the decision

Mark the actual sample’s white sliver, misplaced text or template disagreement. CartVisual’s packaging mockup explores appearance; it does not validate press-ready bleed geometry.

A remaining white edge is a finding, not a complete cause diagnosis. Retain the marked cut sample, supplied flat file and supplier template together before asking whether cutting variation, missing art, an export crop or the wrong version explains it. Keep appearance approval and the production dieline separate. This revision has not exported a PDF, measured a cut sample or approved a press run.