Preparing artwork for print is less about finding one perfect export setting and more about checking the decisions that affect the final result. This reusable prepress checklist covers dimensions, resolution, bleed, color, file structure, fonts, transparency, and PDF export settings for posters, printable wall art files, packaging, apparel graphics, and other merchandise.
Overview
Before exporting, confirm the printer's specifications for the exact product, paper, substrate, or production method. A poster, a folded package, a screen-printed shirt, and a fine art reproduction may require different file formats and color handling. When no specification sheet is available, use the guidance below as a starting point, then request a proof or sample before committing to a larger run.
Keep an editable working file separate from the production file. The working file can contain guides, hidden alternatives, linked graphic design assets, and editable text. The final file should contain only the artwork needed for production, with clear dimensions and a predictable file structure.
For asset-based projects, check the source files as carefully as the layout. Vectors are usually suitable for logos, icons, line art, and type because they can scale without introducing pixelation. Raster images, including photographs, textures for Photoshop, and painted illustrations, must be large enough for the intended physical size. If you download creative assets, confirm their licensing terms before using them in a commercial print product; the commercial use design assets licensing checklist can help organize that review.
The core preflight checklist
- Confirm the finished trim size and orientation.
- Set the document to the printer's required bleed, commonly specified separately from the finished size.
- Keep important text, logos, and faces inside the safe area rather than close to the cut or fold.
- Check raster images at their intended physical size, not merely at their pixel dimensions.
- Use CMYK, RGB, spot colors, or a supplied color profile according to the production specification.
- Convert or embed fonts according to the printer's instructions.
- Inspect transparency, clipping masks, overprints, and effects after export.
- Export the requested PDF or other production format, then open the exported file for a final visual check.
- Use a clear filename that includes the project, version, size, and date.
Checklist by scenario
Posters and printable wall art
Start with the final paper size rather than designing at an arbitrary canvas size. For a borderless poster, extend background colors, photographs, and artwork beyond the trim edge by the bleed amount requested by the printer. Keep titles, credits, and other essential elements comfortably inside the safe area. A border that sits too close to the edge can look uneven after trimming, even when the artwork is technically centered.
For photographic or painterly printable wall art files, inspect the image at 100 percent and at the intended print dimensions. A file may look sharp on a screen while revealing softness when enlarged. Avoid repeatedly enlarging a small raster image; if possible, return to the original photograph, illustration, or vector source. For a collection of poster design templates, document each template's trim size, bleed, color mode, and intended output so buyers or collaborators do not have to guess.
Packaging and labels
Obtain the dieline before placing artwork. Treat the dieline as a production guide, not automatically as printed artwork. Keep folds, seals, glue areas, barcodes, and mandatory information in their designated positions, and maintain a separate layer for structural marks if the printer requests one.
Check panel order by making a simple physical mockup from a low-resolution proof. This catches reversed panels, upside-down text, and misplaced front or back artwork more reliably than viewing a flat spread. For a packaging mockup template, use the mockup to review appearance, but use the printer's dieline and proof to approve production geometry.
Apparel and merchandise graphics
Confirm the decoration method before finalizing the file. Screen printing, direct-to-garment printing, embroidery, heat transfer, and other methods can have different requirements for color separations, fine details, gradients, transparency, and minimum line weights. Do not assume that a transparent background in a design application will behave the same way in production.
Place the artwork on a measured product template and record the intended width and height. A design that looks balanced on a screen may be too large, too small, or positioned incorrectly on the garment. Keep a production version without the product photograph or presentation background, and use a separate product mockup for review and marketing.
Fine art and giclée reproduction
Use the printer's preferred color profile and paper-specific workflow when available. Preserve the highest-quality original, avoid unnecessary resampling, and inspect subtle gradients, dark shadow detail, and areas of near-white. A test print or proof is especially useful when the work depends on delicate color relationships or a textured surface. For a deeper workflow, see How to Prepare Art Files for Giclée Printing and Fine Art Reproduction.
What to double-check
Resolution and dimensions
Resolution describes how many pixels are available within a physical print area. Check the effective resolution of each placed raster image at its final size; the value can change when an image is scaled inside the layout. The appropriate target depends on the printer, viewing distance, image type, and production method, so follow the supplied specification rather than treating one DPI number as universal.
Vectors do not have a fixed DPI when they remain vectors, but raster effects inside a vector file may still have resolution settings. Check shadows, blurs, linked textures, and embedded images separately.
Bleed, trim, and safe zones
Bleed is the extra artwork beyond the intended cut line. It provides room for small cutting variation and prevents an unwanted white edge on full-bleed work. The safe zone is the area where important content should remain. Use the printer's measurements for both, and remember that a fold, perforation, or seam can require its own clearance.
Color and profiles
RGB is commonly used for screens, while CMYK is commonly used in many print workflows, but the correct choice depends on the equipment and instructions. Conversion can change saturated colors, especially bright greens, blues, and oranges. If a printer supplies an ICC profile or color workflow, use it consistently and keep a copy of the original color version before conversion.
Do not judge color from an uncalibrated display alone. A proof under suitable viewing conditions gives you more useful information about the physical result. Spot colors may be appropriate for some brand colors or limited-color processes, but they should be used only when the production method supports them.
Fonts, transparency, and export
Fonts can disappear or substitute when a file is opened on another system. Embed fonts in the PDF when permitted, package the fonts only when the license allows it, or convert final display type to outlines after saving an editable copy. Outlining can prevent substitution but makes text harder to edit and can create problems with very small type, so treat it as a deliberate production step.
Transparency, blend modes, overprints, and clipping masks can render differently after flattening or in an older workflow. Review the exported PDF rather than relying only on the layout file. Zoom into edges, transparent shadows, small type, and overlapping colors. If the printer requests a particular PDF standard or preset, use that requirement instead of choosing a generic export option.
Common mistakes
- Designing to the page size instead of the finished size: define trim, bleed, and safe areas before placing content.
- Assuming a large pixel count guarantees sharpness: evaluate effective resolution at the final physical dimensions.
- Converting to CMYK at the last moment: review the converted colors early enough to adjust the design.
- Putting critical content near an edge or fold: use guides and inspect the full spread at actual scale.
- Sending an editable working file without instructions: provide the requested production format and keep editable sources as backups.
- Leaving hidden layers, notes, or alternate artwork in the final file: remove anything that could be interpreted as production content.
- Trusting a mockup as proof: mockups show presentation and placement, but they cannot replace a printer's proof.
- Ignoring asset licenses: retain license records for vectors, fonts, textures, photographs, and other downloaded art assets.
Good file organization reduces these errors. Use names such as project_poster_A2_front_v03_2026-10-30.pdf, avoid vague names such as “final-final,” and include a short readme when the package contains multiple formats. Guidance on packaging downloadable files is available in How to Make Asset Downloads Easier for Buyers.
When to revisit
Run this checklist whenever the product, printer, material, size, or production method changes. Revisit it before seasonal planning cycles if you are preparing batches of posters, merchandise, or packaging, because a reused template may contain assumptions that no longer match the current specification.
Update your checklist when your design software, PDF preset, color workflow, or asset library changes. Also review it after a failed proof or production issue. Record what changed—such as a bleed requirement, profile, font-handling rule, or file naming convention—so the next project benefits from the correction.
Final five-minute preflight
- Compare the file dimensions with the approved specification.
- Confirm bleed, safe zones, folds, and trim marks.
- Inspect effective resolution and image links.
- Verify colors, fonts, transparency, and overprint behavior.
- Open the exported file, review every page, and archive the approved version with its source and license records.
Once these checks are complete, send the file in the format requested by the printer and ask questions about any unresolved production assumption. A consistent preflight habit makes design templates, graphic design assets, and printable art files easier to adapt—and helps ensure that the printed result matches the work on screen as closely as the process allows.
