Photoshop resolution issues! HELP!

I’ve been told my image needs to be 150 dpi! When I’m setting up a new file in Adobe Photoshop, I see options for both ppi and pixels per centimeter.
Can someone please clear this up for me? Which resolution should I actually be using?
Because if I try to change it after the fact, the dimensions get totally messed up and everything goes to hell!
Also, does anyone know how to embed a font in a TIFF or a Photoshop PDF?
PLEASEEE 😁
THANKS

Resolution (ppi) and DPI aren't even the same thing—they really shouldn't be confused. DPI is strictly about what happens when you hit print; it basically tells the printer how many dots to squeeze into each pixel. Lower DPI means fewer dots, which obviously affects print quality, but it has zero impact on the actual image resolution itself. Honestly, the question you asked is a bit of a dud 🙂
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I'm also totally lost on the second part—what do you mean by "abandoned," and why on earth would anyone need a Photoshop PDF? 😕

Bleed is just extending the image on all sides. You define it by the image size—so if you have a 40x40 inch image with a 1-inch bleed, your final file ends up being 42x42 inches. Bleed exists because printers can mess up and cut off parts of the image if they don't center it perfectly on the material, so make sure you don't put anything important, like text, within that 1-inch margin. You handle this in Adobe Photoshop and then save it as a TIFF or whatever format is required.

Look, I know what bleed is and I know what DPI means, but this assignment feels totally mindless!
I’ve lost count of how many times clients demand a 150 DPI image while I'm sitting here overthinking how to actually set it up.
Honestly? I just eyeball the bleed and call it a day. I usually just set some guidelines in Adobe Photoshop and move on. The guys running the printers know exactly how much room they need if I don't define it for them.

Well, at least I'm not the only one stuck with a stupid task! 😁

Just do the math—it’s actually pretty simple if you stop overthinking it. Say you’ve got an image that’s sitting at 900x900 pixels—assuming we're talking standard ppi here—but then you go to hit print and set your resolution to 150 dpi. You’ll end up with a printout that’s roughly 6x6 inches. Easy enough, right?

Morgan Wilson7 said:Look, I get what bleed is and I know what DPI means, but this whole assignment feels incredibly mindless!
I’ve run into this so many times where clients demand a 150 DPI file, and I’m sitting there overthinking how to set it up!
Honestly? I just eyeball the bleed and set it roughly, usually using guidelines, and call it a day. If they’re the ones handling the printing, they should be smart enough to adjust the margins if I haven't defined them!

Well, fine, at least I'm not the only one who thinks this task is stupid! 😁

DPI stands for dots per inch—that's the print resolution.
PPI stands for pixels per inch—that's the screen resolution.

DPI settings are handled on the printer side. Since people constantly mix these two terms up, it’s highly likely whoever assigned you this job got their terminology scrambled.

If you want my advice, grab a technical manual. You aren't going to master the nuances of this trade without one. You need to nail these fundamentals; otherwise, you're just spinning your wheels, if you catch my drift.

Printer Resolution

The number of ink dots per inch (dpi) produced by all laser printers, including imagesetters. Most consumer-grade laser printers have a resolution of 600 dpi, while professional imagesetters reach 1200 dpi or higher. To figure out the right resolution for your image when printing to any laser printer—especially high-end imagesetters—check the "screen frequency" guidelines.

Inkjet printers actually produce a microscopic spray of ink rather than distinct physical dots; regardless, most inkjet models have an effective resolution ranging from 300 to 720 dpi. To find your specific printer's sweet spot, consult the manufacturer's documentation.

Ugh, whatever... I get it! I know what DPI and PPI mean, okay? My issue was just how on earth you even set a DPI resolution while you're actually designing the image!
Since I’ve run into this so many times—mostly because every single client I've worked for keeps telling me, "Just set it to 150 DPI!"—I started wondering if I was just totally losing my mind or being an idiot. But hey, thank God I'm not 😁
Thanks for the advice!