Check it in grayscale
Turn your spread gray, zoom out to 25%, look from arm’s length. Anything that disappears there disappears in the book. Color hides the problem.Take the color away.
The printer runs one schedule for a thousand schools and won’t fix your bleed. These numbers don’t move.
These are the printer’s rules, not suggestions. The printer won’t fix your bleed for you, and there’s no second chance.
How this year’s book looks (the modes, the type, the color) lives in the Design Bible. This page is only the numbers.
8.5 × 11 in · standard0.125 in past the trim on any edge your art runs off0.125 in from the page edge50C 40M 40Y 100K, total ink under 300%300 dpi at the size they print. Line art 800 dpi2625 × 3375 px2550 × 3300 px2550 × 1650 px1275 × 1650 px1275 × 825 pxEvery camera in our cabinet beats the biggest size here by about four times.The camera is never the problem.
A photo’s size is measured in pixels. The A7 III takes 6000 × 4000, and nothing you do later adds more. DPI isn’t part of the photo. It’s an instruction for how big to print it.
The same photo printed small, so the pixels are packed tight.
The same photo printed big, so the pixels are spread thin.
Typing 300 into the DPI box does nothing. It can’t add pixels. If Photoshop offers to “resample,” that’s worse: it makes up new pixels by guessing.
Instagram shrinks photos. Screenshots are already tiny. A photo sent by text has been shrunk twice. A logo saved from a website is usually 200 pixels wide. All four happen before anyone opens Photoshop.
JPEG loses a little quality every time you save it. Once is fine. Five times is mush. Edit from the RAW, save as JPEG once at the end.Don’t edit the JPEG.
PNG can be see-through, so on a colored page the background stays invisible.
JPEG can never be see-through. Twenty minutes cutting out edges, and you still get a white box.
A logo saved from a website prints blurry. Ask for a vector file as soon as they buy: “Can you send the logo as an AI, EPS, SVG, or PDF?” About half say yes right away.
A screen gives off light. Ink doesn’t. Dark gray text on dark navy looks fine on screen because the screen lights up both. On paper, they blend and your caption disappears. It will always look fine in Walsworth.It won’t look fine in the book.
L* measures how light a color looks: 0 is black, 100 is white. The difference between your two numbers is what shows up in print. Under 25 might not show. Under 15 won’t. Both dark? You need a bigger gap than you think.
Turn your spread gray, zoom out to 25%, look from arm’s length. Anything that disappears there disappears in the book. Color hides the problem.Take the color away.
Never put dark text on a dark part of a photo. Move it, or put a see-through dark box (a scrim) behind it.
White text needs a dark enough background. White on medium gray turns to mush too.
Not sure? Add more contrast than looks right on screen. Printing always loses some.
RGB vs. CMYK, quickly. Screens make color with light, so they show colors ink can’t print. That neon blue will print a little duller. Nobody did anything wrong.Just know it’s coming.
A photo doesn’t get sharper because you need it to.