Dam

if youre only planning on posting your art online, them please save it as .png ;this is also better for transparencies as well

BUT

please, if youre planning of printing your art, NEVER use png. it makes the quality of the image pretty shitty. use jpeg or pdf instead. and always set your work at 300dpi to get a better printing quality - this means, the images are crisper and sharper and theres no slight blurriness. i had a talk with my friend who is currently taking design, and pdf is much better to use when youre working with a bigger publishing company because it still has the layers intact, but if youre only planning on printing your stuff at staples or at some small publishing store, the jpeg is the way to go.

This is all utter bullshit.

I’m sorry but if your qualification is working on the school yearbook, you have no qualifications. Do not pretend otherwise. As a former professional photo manipulator for advertising brochures, I can say that you’re not comparing apples to oranges here - if anything, you’re comparing fruit to farmyard machinery:

JPEG is a lossy format. It is suitable for web imagery because it sacrifices detail for reduced file sizes, but in doing so it introduces artifacts that weren’t in the original; if you load a JPEG for editing, then save it as a different JPEG, then you’re adding more artifacts formed from those first artifacts. Do this often enough and you end up with a horrid glitchy mess that looks like a puddle’s reflection after a stone’s been thrown in. You’ve seen those memes that have 3 or 4 different “found at” tags along the bottom, that look like fingerpainted copies of the original? That’s why.

PNG is a lossless format that comes in two primary flavours, PNG-8 and PNG-24, which use 8 and 24 bit colour respectively. 8-bit colour is what you have in GIFs, a limit of just 256 different colours in a predetermined palette, usually automatically chosen by your software when saving. These files will look the same as GIFs, potentially with large patches of solid colour instead of the usual gradual shading seen in 24-bit imagery. This is usually better for small banners or pixel art, as it can yield smaller filesizes than GIF format. (There is an animated version called MNG but it has very little web support, hence the continued use of GIFs.)

PNG-24 is great for larger images where detail is as important as colour depth, as well as printable RGB images and (if supported by the client) full colour images with gradient transparencies. It most certainly does not make “the quality of the image pretty shitty,” as it preserves every nuance. File sizes can be smaller than JPEG for small images, or significantly larger for large images.

PDF is a container file, whatever you put into it will be pretty much preserved as it was, so you gain nothing but lose nothing.

TIFF is what you need to be using for archival or print-quality imagery. It has support for multiple layers, multiple colour channels (RGB as well as CMYK, which is essential for accurate print rendering), and everything is preserved exactly as it was seen on-screen when being composed. There are compressed versions available, they use similar methods to PNG in order to maintain detail without sacrifice; next to whatever your graphics program uses natively, this is the most interchangeable format available for professional use.

DPI is important only when used in combination with image dimensions; in and of itself it serves no purpose. If you make a brilliantly detailed 640x480 image & set it to 300dpi, you’ll receive a brilliantly detailed 2 inch x 1.6 inch print. This is great if you want to make a postage stamp, but not if you’re creating an A4 flyer! Determine the image’s dimension then set the DPI accordingly; 72dpi isn’t hideous especially for text-heavy work (it’s ~3 pixels per millimeter), and 150dpi can be suitable for many images. Unless you’re interested in photo realism, 300dpi is usually overkill - for our hypothetical A4 flyer, you’d need a file of 2490x3510 pixels for edge to edge printing, with a correspondingly high memory requirement and filesize even if using a compressed format.

Keeping the layers intact is utterly unimportant for print work unless you want to use a separated colour print method that requires multiple passes to lay down each ink. If you send a file with all the layers, masks, etc. off for printing you’re liable to get it sent back unactioned, as they won’t want to take responsibility for choosing the wrong elements for printing. Save your work with everything intact, then save a flattened copy especially for printing purposes - this is one of the reasons Save Copy As… is a common option in graphics manipulation software.

As a designer who’s worked a few years for a newspaper, I cannot begin to tell you how much OP’s post (edit: response, technically) made me cringe. I would have killed to get a photo as a TIFF for once instead of having to tear apart PDFs only to find a 50x100px 72dpi shitty JPEG inside for the 5 millionth time…

PDF now a days can save higher quality images and can be open in Adobe Software but please keep in mind of the DPI as well as checking if the document for colour values as it needs to be in CMYK in order to print properly (many people and artists do it in RGB but that is for the screens and web) PDF is one of the more commonly recommended formats for printing as long as the document is 300 dpi and higher.

TIFF is also great if you are working on 3D modeling software such as Maya and 3DS Max. It saves the mesh of your model so you can work on it in Photoshop or Illustrator because of the multiple levels. Correct me if I am wrong but this format is common for 3D printing as well.

If you are looking to print stickers, EPS and AI files are the print shops best friend. Especially since designers can work with the original document directly to make sure it prints perfectly. This applies to other printing areas but having printed sticker before, this was what the designer I was working with highly recommended to me.

I almost didnt go swimming or to the beach all summer because of how anxious and uncomfortable just thinking about being in a wet t shirt and sports bra would make me.

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