How to Prepare Artwork for Professional Flyer Printing

A flyer that looks great on screen and prints poorly is almost always an artwork preparation problem rather than a printer problem. Resolution settings, colour mode, bleed dimensions, font handling and file format each have specific requirements for commercial print. Get these wrong and the printer either rejects the file or prints something that doesn't match what you saw on screen.

Most amateur designers (and many small business owners doing their own design) hit the same handful of issues. Low-resolution images that look fine at screen size but blur at print size. RGB colour files that shift unpredictably when converted to CMYK. Missing bleeds that produce white edges where the trim should run clean. These issues are all preventable with the right preparation.

This article walks through the artwork checklist for commercial flyer printing, what each element means in practice, and how to set your files up correctly from the start.

Resolution: Why 300dpi Is the Standard

Commercial print runs at 300 dots per inch (dpi). Below that, images blur and text edges go fuzzy. Above that, the file size grows without visible improvement. 300dpi is the standard target for all images in print-ready files.

The trap is that screen resolution is 72dpi. An image that looks crisp on your monitor at the screen size might be 72dpi and will blur when printed at the same physical dimensions. The fix is checking image resolution at the print size, not the screen size. A 1500-pixel-wide image prints sharply at 5 inches wide; it blurs at 10 inches wide.

For most flyer designs, hero images need to be at least 1500 pixels in their longest dimension to print sharply at typical sizes. Supporting images need at least 600 to 800 pixels. Logos should be vector files (which scale to any size) rather than rasterised. Our flyer printing team rejects files with insufficient resolution before printing, so any quality issue is caught before it reaches the customer.

Colour Mode: RGB vs CMYK

Screens display colour using RGB (red, green, blue light). Print uses CMYK (cyan, magenta, yellow, black ink). The colour spaces are different; some colours that look vibrant on screen can't be reproduced exactly in print.

The standard is to design in CMYK from the start for print projects. Working in RGB and converting at the end produces colour shifts that are sometimes significant. Bright greens and rich blues are particularly affected; both can dull noticeably when converted from RGB to CMYK.

The other colour consideration is brand colours. If your brand uses specific Pantone colours, your printer can produce them as spot colours for the exact colour match. For most flyer printing, CMYK process printing is sufficient and dramatically cheaper than Pantone spot printing. Discuss colour matching needs with your printer before finalising the design.

Black is the colour that causes the most amateur design errors. Pure black in CMYK is 0/0/0/100; "rich black" used by professional designers is typically 30/30/30/100 to deliver a deeper, more uniform black. Plain 100% black on large areas can look grey or washed out. Our brochure printing team specifies rich black for client designs as standard.

Bleed: Why Designs Need to Extend Past the Trim

Commercial printers don't print to the exact final dimension and then trim cleanly. They print on slightly larger sheets and trim down to the final size. The cutting blade has tolerance of 1mm or 2mm, which means designs that end exactly at the trim line can show white edges if the cutter drifts slightly.

The fix is bleed: design elements should extend 3mm beyond the trim line on all four sides. The 3mm extension means the cutter can drift slightly without creating white edges. After trimming, the design extends edge-to-edge cleanly.

The other side of bleed is the safe zone. Important content (text, logos, key visual elements) should stay 3mm to 5mm inside the trim line. The cutter drift can also affect the other direction, so content too close to the edge risks being cut off. Safe zone is the buffer between the design extending to bleed and the content sitting cleanly within the trim.

Setting up bleed correctly requires the design software to be configured for it. Adobe InDesign and Illustrator have bleed settings in document setup; Canva and Microsoft Word handle bleed less well but can be configured. The printer should specify exact bleed and safe zone requirements before design starts.

Font Handling: Outlining Versus Embedding

Fonts cause more print errors than any other single issue. The font used in design might not be installed on the printer's computer. If the file is opened and the font is missing, the software substitutes a different font and the design looks completely different from what was intended.

The fix is one of two approaches. First, embedding fonts in the PDF when exporting. The PDF carries the font information with it; the printer's computer doesn't need the font installed because the PDF self-contains it. This is the standard for most modern print workflows.

The second approach is converting text to outlines before exporting. Outlining converts the text from typed characters to vector shapes, eliminating the font dependency entirely. The downside is the text can't be edited after outlining; the upside is no font substitution risk.

For most flyer designs, embedded fonts work fine. For complex designs with unusual fonts or when sending files between very different systems, outlining is safer. Our pamphlet delivery and print preparation team handles either approach but recommends outlining for safety on important campaigns.

File Format and Export Settings

Print-ready files should be PDF in almost all cases. PDF preserves the design exactly, includes all the production specifications (bleed, colour mode, image resolution), and can be reliably opened on any system. Avoid sending native design files (InDesign, Illustrator, Photoshop) unless specifically requested.

The PDF export settings matter. "Press Quality" or "PDF/X-1a" presets in Adobe applications produce files optimised for commercial print. These presets handle CMYK conversion, font embedding, image resolution, and bleed automatically. Other PDF presets ("Web," "Smallest File Size") produce files that look fine on screen but print poorly.

The exported PDF should be checked before sending to print. Open the file and verify everything looks right: images are sharp, colours look correct, bleed is visible, fonts render correctly. Print a test page on your own printer at the design size to verify the appearance matches expectation. Issues caught at this stage are cheap to fix; issues caught after print run is started are expensive.

Final file naming should be clear and versioned. "Smith-Plumbing-Flyer-Final-v3.pdf" is clearer than "flyer.pdf" and avoids confusion when multiple campaigns or revisions exist. Letterbox Distributors production workflow specifies file naming conventions for client work.

Why Choose Letterbox Distributors for Artwork-Ready Production

Letterbox Distributors handles artwork preparation as part of our integrated service. Our in-house designers produce print-ready files that hit all the specifications above without the client needing to manage the production technicalities. The campaign goes from concept to print without artwork issues delaying production.

For clients providing their own artwork, we run a pre-flight check on every file before printing. Issues are flagged and corrected (or returned with specific notes) before any printing begins. The pre-flight discipline catches problems early and saves rework cost.

If you're preparing artwork for flyer printing and want to ensure it prints cleanly, get in touch with Letterbox Distributors. Send us your design files; we'll run the pre-flight check, advise on any issues, and prepare the files for production. The artwork is ready before the printer touches it.