Print-Ready File Checklist: Everything to Check Before Sending Artwork to Print
A design can look flawless on screen and still create problems once it reaches production. A photograph may appear softer than expected, a background intended to run to the edge may leave a narrow white line after trimming, or a corporate colour may look noticeably different from the approved brand shade. Small text can lose clarity, while a folding or packaging file may contain technical elements that do not correspond to the finished construction. These problems are often not caused by the printing process itself. They begin earlier, in the artwork.
A print-ready file is more than a finished design exported as a PDF. It is artwork prepared with the physical production process in mind, including trimming, folding, colour reproduction, finishing and the characteristics of the chosen material. Before sending artwork to a commercial printer, it is therefore worth checking more than whether the pages look correct on screen.
Check the Artwork Against the Production Specification
Before checking the PDF settings, go back to the specification for the job and make sure the artwork has been prepared for the product that is actually being produced. Confirm the:
- finished size;
- orientation;
- number of pages;
- folding or binding method;
- paper or other substrate;
- printing process;
- colour requirements;
- finishing;
- quantity.
There is no single definition of a correctly prepared print file because different products place different technical demands on the artwork. An A4 flyer, a folded brochure, a presentation folder and a folding carton may all be supplied as PDFs, but the way those files need to be constructed can be very different.
A brochure may require panels to be arranged correctly for folding. A presentation folder may need a structural template showing pockets and flaps. Packaging can involve separate technical lines for cutting and creasing, together with artwork positioned precisely within the dieline. The file should therefore be prepared for the specific finished product, rather than exported using a generic PDF setting and assumed to be ready for production.
Check the Finished Size
The document dimensions should correspond to the final trimmed size agreed for the project. It is surprisingly easy for the wrong format to reach production. A designer may have started from an older template, changed an artboard during the project or simply exported the wrong version of the document. Check the dimensions in the design application, then check the dimensions of the exported PDF as well. Do not rely on the filename: a file called A5_Brochure_Final.pdf is not proof that the document is actually A5.
For multi-page artwork, check every page rather than assuming that one correct page confirms the dimensions of the rest. A single page with the wrong size can create problems during imposition or finishing even when everything else in the document is correct.
Check the Bleed Bleed
is the area of artwork that extends beyond the final trim. It gives the trimming process enough room to accommodate normal production tolerances, so an element intended to reach the edge of the finished piece does not stop slightly short of the cut and leave an unwanted white line. Any photograph, colour background, pattern or other graphic that is intended to run to the edge should normally extend into the bleed. The exact amount required should come from the printer's specification, because it can vary according to the product, production method and finishing process. The visual principle is simple:
If it needs to print to the edge, it should not stop at the trim line.
This is particularly important for:
- full-page photographs;
- solid colour backgrounds;
- edge-to-edge graphics;
- patterns;
- full-bleed advertisements;
- packaging artwork.
Bleed is a small technical detail, but getting it wrong can affect the appearance of the entire finished piece.
Keep Important Elements Away from the Trim
Bleed protects the background; the safe area protects the content. Logos, headlines, contact details, QR codes and other important elements should not sit too close to the finished edge. Trimming is a physical process, so there is a normal tolerance around the intended cut position. A small variation is rarely noticeable when the design has a sensible margin, but the same variation can become obvious when a telephone number or logo sits almost on the edge.
The appropriate safe margin depends on the product and production method, so use the printer's specification rather than relying on a universal figure. A useful final check is to display the trim line clearly and inspect every page specifically for elements that sit too close to it.
Check Images at the Size They Will Actually Be Printed
Image quality is not determined by pixel dimensions alone. What matters is whether the image has sufficient resolution for the size at which it will appear in the finished product. A photograph may be perfectly adequate when used at a small size but become visibly soft when enlarged across a brochure cover or poster. Conversely, an extremely large image can increase the file size without producing a better printed result.
Review each placed image and consider:
- Is the original image sharp?
- Has it been enlarged significantly?
- Is its resolution appropriate for its final reproduction size?
- Are there visible compression artefacts?
- Does it still look clean at the size at which it will actually be printed?
Be particularly cautious with images downloaded from websites, social media platforms or messaging apps, as they may already have been compressed or reduced in size before they were placed in the artwork. Do not judge an image solely by opening the original file and zooming in. The relevant question is how the image performs in the layout, at the size at which it will actually be reproduced.
Review the Colour Workflow
Colour is one of the areas where a screen preview can create false confidence. A monitor produces colour using light, whereas commercial printing reproduces it using inks or other print processes. RGB is primarily associated with screen-based colour, while conventional process printing uses CMYK.
That difference does not mean that every RGB object will automatically produce a poor result, because modern production workflows can handle colour conversion in different ways. What matters is that the colour workflow is intentional and appropriate for the printing process.
Before sending the artwork, check the colour mode of placed images, the document colour settings, the relevant colour profiles, important brand colours and any RGB elements that need to be converted. If the printer has specified a particular CMYK profile, use that specification rather than relying on a generic setting.
For colour-critical work, the appearance of the design on an uncalibrated monitor should not be treated as the final colour reference. A proof or approved colour reference may be appropriate for corporate identity work, packaging and other projects where consistent colour reproduction is particularly important.
Treat Brand Colours as a Production Specification
A colour that looks acceptable on screen may still be unsuitable as a reliable brand reference. If the artwork contains a corporate colour, check the brand guidelines rather than sampling the colour from a logo image or photograph. Depending on the project and printing process, the colour may be specified as a CMYK build or as a spot colour such as a Pantone colour. The choice matters because the same brand colour may need to appear consistently across business cards, brochures, folders, packaging and other printed materials. Differences between separate print runs become much more noticeable when those items are viewed together. For important brand applications, colour should therefore be treated as part of the production specification rather than simply as a visual choice made on screen.
Check Fonts and Text
Typography can change during export if fonts are missing, substituted or handled incorrectly. A font problem can alter line breaks, spacing, text position or the appearance of individual characters, and even a subtle change can affect a carefully prepared layout. Before sending the artwork, check that:
- the correct fonts and weights are being used;
- there are no missing-font warnings;
- fonts are embedded in the PDF where required;
- special characters display correctly;
- text has not moved or reflowed during export.
Converting text to outlines can be appropriate for certain production workflows, particularly where the printer's specification requires it, but it should not be treated as an automatic requirement for every commercial print file. Outlined text can no longer be edited as live type, which can make later corrections more difficult, so the appropriate approach depends on the software, PDF standard and printer's requirements.
Pay Particular Attention to Small Type and Fine Lines
Details that look perfectly clear on a monitor may not reproduce with the same visual strength on paper, particularly when they are very small, very thin or reversed out of a dense background. Inspect small body text, fine rules, thin strokes, small icons, reversed-out text, fine patterns and white text placed over dark colours. White text reversed out of a dense background deserves particular care because very fine type can be affected by registration tolerances, ink coverage and the characteristics of the substrate.
The same applies to hairline rules and delicate graphic details. A line that looks elegant in a digital layout may simply be too fine for consistent reproduction.
There is no single minimum text size or line weight that applies to every type of commercial printing. The appropriate limits depend on the printing process, material, colour and finishing, so any project-specific production requirements should take precedence.
Inspect Transparency, Overprint and Other Effects
Design software makes it easy to build sophisticated artwork using transparency, blending modes, masks, shadows and other effects. The fact that an effect looks correct in the source file does not mean it should be left unchecked in the final PDF.
Overprint settings deserve particular attention because an object set to overprint behaves differently from one printed normally over another colour. An unintended overprint setting can cause an element to disappear, alter the appearance of a colour or create an unexpected interaction between objects.
This is especially relevant to small black text, spot colours and technical elements used for finishing. For complex artwork, inspect the exported PDF using appropriate output preview or preflight tools rather than relying solely on the normal page view.
Check Technical Elements for Finishing
If the job includes die cutting, creasing, foil stamping, embossing, spot UV or another special process, the artwork needs additional checks. Make sure that:
- cutting lines are correctly positioned;
- crease lines are clearly distinguished from cutting lines;
- technical elements use the required spot colours or naming conventions;
- finishing artwork has not been accidentally altered during export;
- front and reverse artwork correspond correctly to the physical construction.
Packaging and other die-cut products require particular care because the artwork is also communicating information about the physical manufacturing process . A dieline is not simply another graphic element on the page: it represents how the printed sheet will be cut and folded into the finished product.
Inspect the Exported PDF — Not Just the Source File
One of the easiest checks to overlook is also one of the most useful. Designers often inspect the InDesign, Illustrator or other source file repeatedly, then send the exported PDF without giving the PDF itself a final review. Always open the actual file that is going into production. For a multi-page document, review the complete PDF rather than checking only the first and last pages. Look for:
- incorrect page sizes;
- missing bleed;
- shifted objects;
- unexpected font changes;
- image quality problems;
- missing or altered graphics;
- incorrect page order; unwanted blank pages;
- changes to technical elements.
The exported PDF is the production file. If something changed during export, the fact that the original artwork was correct does not prevent the problem from reaching the printer.
Follow the Printer's PDF Requirements
There is no universal PDF export preset that is automatically correct for every commercial printing job. The appropriate settings can depend on the printer's workflow, equipment and finishing requirements. A printer may specify requirements for:
- PDF version;
- colour profiles;
- bleed;
- image compression;
- transparency;
- fonts;
- spot colours;
- crop marks;
- technical layers.
If the printing company provides its own artwork guidelines or PDF specification, follow those requirements rather than relying on a generic preset found online. This is particularly important for packaging, special finishes and colour-critical work.
Run a Preflight Before Submission
A visual inspection catches many errors, but technical preflight provides another layer of protection. Depending on the software and configuration, preflight can flag problems such as incorrect page dimensions, insufficient bleed, RGB objects, missing or unembedded fonts, low effectuve image resolution, unexpected spot colours, transparency-related issues and other PDF specification problems.
Preflight is not a substitute for looking at the artwork; it is a second line of defence. A file can pass a technical check and still be wrong for the job. A PDF may have the correct page size but contain an outdated version of the logo, or it may have sufficient bleed while using the wrong finished format.
Technical validation and visual approval therefore need to work together.
Compare the Final PDF with the Approved Brief
The final check should not be performed from memory. Put the exported PDF next to the approved brief, quotation, specification or production template and compare them directly. Confirm that the file matches the agreed:
Format → pages → artwork → colours → images → finishing → version
This comparison catches a different class of mistakes from technical preflight. A technically perfect PDF can still be the wrong PDF. The artwork might contain an earlier telephone number, an old logo might have been left on one page, or the client may have approved a different cover image. A packaging dieline might also have been updated while the artwork itself was not. None of these problems is necessarily a PDF error. They are production errors caused by sending the wrong artwork.
The Final Production Check
Before pressing Send, go through the file once more with production rather than design in mind.
Is the finished size correct?
Does every edge-to-edge element extend into the bleed?
Are important elements safely inside the trim?
Are images suitable for their actual reproduction size?
Is the colour workflow appropriate for the job?
Are the correct fonts present and behaving as expected?
Are small details and fine lines suitable for the chosen process?
Have transparency and overprint settings been checked?
Are die lines, creases and special-finishing elements prepared correctly?
Has the exported PDF itself been inspected? Does the final file match the approved version?
If all of these checks are satisfied, the artwork is much closer to what a commercial printer needs: not merely a design that looks finished, but a production file that clearly communicates how the finished piece is intended to be made. That distinction is important. Good print preparation is a bridge between creative work and physical production. The fewer assumptions left in the file, the fewer opportunities there are for an unwanted surprise during printing or finishing.
