What 'print-ready' means: a 7-point checklist for print shops

A print-ready file is one your operator can send straight to the RIP without opening it to fix anything. In practice that means seven things are true: correct bleed and safe margins, CMYK with spot colors defined, images at 300 ppi at final size, fonts outlined or packaged, dielines and cut paths on their own layers, total ink coverage within your stock's limit, and a packaged PDF delivered with its source file. If any one of those is missing, the file isn't print-ready yet, whatever the customer's email says.

Why "print-ready" needs a definition

When customers say a file is print-ready, they usually mean they've finished designing it. When your press operator says it, they mean nothing will go wrong at the press. Reprints live in the gap between the two.

Below is the checklist we run on every file at Silentt, the same seven points listed on our prepress and file cleanup page, expanded so you can use it at your own counter.

1. Bleed and safe margins

Bleed is artwork that extends past the trim line so a slight shift in cutting never leaves a white sliver at the edge. The US standard is 0.125 in on every side (3 mm for metric work). A 3.5 × 2 in business card becomes a 3.75 × 2.25 in document.

Safe margin is the zone inside the trim where text and logos must stay. Keep important content at least 0.125 in inside the trim on small pieces, and more on larger pieces or booklets, where trim variation and page creep are bigger.

How to check: in Acrobat Pro, look at the page boxes (Print Production > Set Page Boxes). If the trim box and the bleed box are identical, there is no bleed. Also zoom to the edges and confirm the background actually runs past the trim.

The fix: extend the background, rebuild the edge of a photo, or move content inward. Don't scale the whole design up to fake bleed; it pushes edge content toward the trim.

2. CMYK, with spot colors where they matter

Your RIP will convert RGB files anyway, but the conversion is uncontrolled: saturated blues, greens and oranges shift, and nobody sees it until the sheet comes off the press. Converting deliberately, with your press profile, lets you see the shift on screen and correct it.

Spot colors need their own check:

• Pantone inks, white ink, foil and spot UV should each use a named spot swatch that matches your naming exactly.
• On a CMYK-only job, stray spot swatches should be converted, or you may get an extra separation.
• Small black text should be 100% K only, so it stays sharp. Large black areas can use a rich black built the way your press prefers.
• Nothing should use the Registration swatch as a color.

How to check: Acrobat Pro's Output Preview shows every separation in the file. If you see plates you didn't quote for, stop there.

3. 300 ppi at final size

The number that matters is effective resolution: the image's pixel dimensions divided by the size it will print. A photo 1,200 pixels wide is 300 ppi at 4 inches wide and only 150 ppi at 8 inches. The resolution field in Photoshop means nothing on its own.

300 ppi is the standard for offset and digital work viewed at arm's length. Large-format pieces seen from a distance can work at less, so for those we check against the real viewing distance.

Photos can often be upscaled carefully by a modest amount. Logos, line art and text should be rebuilt as vector instead, because upscaling soft edges just gives you bigger soft edges.

4. Fonts outlined or packaged

A missing font gets substituted, which changes letter widths, so text reflows and copy can fall off the bottom of a frame. Two safe ways to avoid it:

• Outline the type in the print file. It can't be substituted, but it can't be edited either, so keep a live-type version as the source.
• Package or embed the fonts. InDesign and Illustrator's Package command collects fonts and linked images into one folder. In a PDF, File > Properties > Fonts should show every font as "Embedded" or "Embedded Subset".

Files exported from Word or online design tools are the usual offenders.

5. Dielines, cut paths and fold marks on their own layers

Anything that tells your finishing equipment what to do (cut lines, crease lines, perforations, kiss-cut contours, fold marks) should be:

• on its own named layer, so it can be switched off for printing and output on its own for cutting
• in its own named spot color, so it never prints as part of the CMYK artwork
• set to overprint, so it doesn't knock a white line out of the design underneath

The most common failure we see is a die line drawn in 100% black on the artwork layer, which prints right on the job. Next is artwork that stops exactly at the die line, with no bleed past the cut. Both are expensive on boxes and labels, which is why our packaging and label design work starts on the dieline rather than adding it at the end.

6. Total ink coverage checked against your stock

Total area coverage (TAC) is the sum of the C, M, Y and K percentages at the darkest point of the file. Too much ink causes slow drying, set-off, cracking along folds and muddy shadows.

The right limit depends on your press, stock and profile, so your own specification wins. As a general guide, coated stock on many offset presses tolerates around 300%, uncoated stock less than that, and newsprint less again.

The usual culprits are a "rich black" built as 100/100/100/100 (400%) and dark photos converted with a generic profile.

How to check: in Acrobat Pro's Output Preview, turn on the Total Area Coverage highlight and set it to your limit. Anything above it lights up.

7. A packaged print-ready PDF, plus the source

The deliverable should be two things:

1. A print-ready PDF, usually PDF/X-1a or PDF/X-4 depending on your workflow, with trim and bleed boxes set correctly and crop marks placed outside the bleed if you use them.
2. The source file, meaning native AI, INDD or PSD, with fonts and linked images packaged alongside it.

Name both so anyone in your shop can find them next year: customer, job, size and version. The PDF gets the job printed today; the source makes next year's reorder or new phone number a five-minute edit.

A one-minute check before anything goes to press

If you only have a minute, open the PDF in Acrobat Pro and run through this:

1. Page boxes: is the bleed box bigger than the trim box?
2. Output Preview > Separations: only the plates you expect?
3. Total Area Coverage: anything above your limit?
4. File > Properties > Fonts: everything embedded?
5. Zoom to 400% on photos, logos and the smallest type: anything soft, jagged or pixelated?
6. Layers: dielines and finishes separate and named?

When to fix it yourself and when to send it out

Some fixes take two minutes: setting page boxes, converting a stray spot color. Others take an evening: rebuilding a background that stops at the trim, redrawing a screenshot logo, turning a Canva flyer into something a press can run.

The second kind is what we handle for print shops every day. Send us the customer's file and it comes back print-ready, usually the same day, under your shop's name. Our case studies show examples of files we've set up. To talk it through, book a short call or message us through the chat on the site.

FAQ

What does print-ready mean for a PDF?

A print-ready PDF has bleed and trim boxes set, uses CMYK and correctly named spot colors, contains images at an effective 300 ppi, and embeds or outlines every font. Dielines and finishes sit on their own layers, and ink coverage is within your press's limit. Your operator should be able to print it without opening it in a design program.

Should fonts be outlined or embedded in a print file?

Either works, as long as the press never has to substitute a font. Outlining is the safest choice for the final print file, but outlined text can't be edited. That's why we deliver an outlined or embedded print PDF along with a source file that keeps live type and packaged fonts.

What bleed size does a print-ready file need?

In the US, 0.125 in on every edge is the standard for most printed pieces, and 3 mm is the metric equivalent. Some large-format, packaging and wrap jobs need more, so check your finishing method and any template you're working from. Bleed is only needed on edges where artwork actually runs off the page.