Questions tagged [ppi]

Questions about image resolution as measured in pixels per inch. PPI is either (a) the resolution of an image when it is printed at a specific physical size; or (b) the physical resolution of a display device. DPI (dots per inch), which refers to the output resolution of a print device, is often used in error in place of PPI.

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67
votes
13answers
408k views

What resolution should a large format artwork for print be?

For wall-sized graphics and large banners (e.g 3m x 5m), what is an acceptable PPI for print? As I understand it 300 PPI is the typical for 'small' artworks (esp. for clean text resolution). However, ...
35
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2answers
21k views

I need to print an image at a certain size. What dimensions and resolution should I use?

(This question is meant to be a resource to direct others to given that this is a common question.) Given the task of creating an image that will be printed at a certain size, what pixel dimensions ...
50
votes
4answers
134k views

Is it mandatory to keep images at 72DPI for web design?

I have been designing web banners for more than a year but never considered the DPI. I was using the default 72DPI, but now I want to know is it necessary to create web designs in 72DPI? What if we ...
28
votes
6answers
105k views

What is the difference between DPI (dots per inch) and PPI (pixels per inch)?

There are lots of other questions on Graphic Design which partly cover this, e.g. What DPI should be used for what situations?. However, I have become frustrated at the number of questions and ...
30
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11answers
41k views

What DPI should be used for what situations?

I've been seeing the word 'DPI' pop up quite a lot when I export my work out in Photoshop and Illustrator. While I know that DPI stands for 'dots per inch', and that if you have too low of a DPI on an ...
15
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6answers
6k views

Why does Photoshop call ppi “resolution”?

There are some things in Photoshop's "new" dialog window that I find troubling: Assume an image of 1000 pixels by 1000 pixels. How can there be an input box for ppi? Ppi a property of the result of ...
4
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3answers
2k views

Inept knowledge about dpi and ppi,please help?

I have designed a web header 1000x98 at 72 ppi using Macromedia Fireworks for our website and we are planning to print a billboard using that header? The printer has told us that he needs the image ...
5
votes
1answer
98k views

What DPI/PPI should a 4 by 6 meter outdoor billboard be designed at? [duplicate]

I'm creating a 4 x 6 meter (~13 x 20 feet) outdoor billboard advertisement that includes an image and vector logo (rasterized) in Photoshop. I was working using a smaller size for design purposes, but ...
4
votes
4answers
3k views

DPI Vs. PPI Vs. Image dimension, what should be taken to consideration?

I've been really facing this problem and I have found a similar link, that does not really address the problem. First of all, I'd like to mention that I use blender and GIMP for most graphics that I ...
10
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3answers
39k views

How to see an embedded image's dpi (ppi) in a pdf in Acrobat Pro?

The following situation baffled me slightly: after preparing a pdf in a different program I wanted to make sure that an embeded image in the pdf file had the right dpi, yet I found no way in adobe ...
29
votes
5answers
124k views

How can I export an image from Illustrator image at multiple sizes?

I am new to Adobe Illustrator and I have a logo image which I need to use in 5 or 6 different sizes. The logo image was created in Adobe Illustrator, but when I try to save the image to PNG or JPEG ...
2
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7answers
51k views

What's the difference between 72ppi and 300ppi?

I created two documents with same pixel dimensions (1280x768). Document 1: 72ppi Document 2: 300ppi When I saved both in .png, they have the same size on the hard disk. Why do I need PPI? Why can't ...
1
vote
2answers
385 views

Why are the terms DPI and PPI so misunderstood?

It seems the terms DPI and PPI are misunderstood by more people than actually understand them. I'm not just talking about average Joe trying to print a holiday snap, I'm talking about graphic ...
3
votes
2answers
16k views

iOS 4 retina display resolution size

I'm a little confused about the resolution here, I know the dimensions suppose to be: 320x480 points but what do I need to put for the resolution? e.g. 300 dpi? I'm designing on CS5.
3
votes
2answers
12k views

Photoshop Resolution for Web Design?

I'm a programmer, not a designer, but I am trying to learn design as it would be very helpful. I am following a tutorial on PSD|TUTS+ and it doesn't specify the resolution I should be working with. My ...
11
votes
4answers
4k views

Is a DOT comprised of many PIXELS?

I', trying to understand difference between DPI and PPI. I learned that a DOT is the smallest physical entity a device can show or printer can print and a DOT may consists of R,G,B elements. A ...
5
votes
1answer
58k views

What PPI settings should I use to print a poster from Photoshop?

Recently I needed to make an A3 size poster for my college fest so I opened up a new .psd, set the dimensions to 11.7" x 16.5" 300 PPI under 16-Bit. As you know the file size ran into 100 MBs and ...
3
votes
1answer
1k views

Scaling images down in InDesign and ppi

If I place a 10" X 6.7" 72 ppi .jpg into InDesign and scale the image down to about 3" X 2", does the ppi change for that image? And how can I tell?
3
votes
3answers
7k views

MacBook retina Photoshop save for web

I am, like so many other graphic designers, very excited about the new MacBook 15" with retina display. But there is one thing that I really am concerned about. With 4 times the pixels as on ordinary ...
2
votes
2answers
2k views

Smartphone resolution

I am going to make a design for a smartphone game, now I have seen that there are MANY resolutions around. Luckily iPhone has only a few, but Android contains already more, not to speak about upcoming ...
0
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3answers
3k views

Is a 100x100 px image with 100 ppi equal to a 71x71 px with 50ppi?

This should be obvious but the content out there on the web is confusing. I'm trying to understand the role ppi plays when saving an image. So if I have an image with rows of 1000 pixels, is it the ...
5
votes
3answers
2k views

Illustrator giving two values for ppi for a linked raster image, only when rotated?

I am trying to place this raster logo supplied by a client on a large format template (this being a raster logo of some text in Arial is a separate issue). In Photoshop, the image is showing at ...
4
votes
4answers
19k views

Will changing image resolution from 300 to 72 without resampling reduce the quality?

This is a rather stupid question so I apologise in advance but I just wanted to be 100% sure! I have a set of photos at 300 ppi that are 800 pixels by 800 pixels and need to convert them in Photoshop ...
4
votes
2answers
4k views

How to place files to Photoshop without scaling?

Is there a way to place files in Photoshop without scaling (true pixel of image)? They automatically resize to fit screen when I drag into PSD file! For example, when place a 48x48px to 480x480px PSD, ...
3
votes
1answer
3k views

What are the smallest dimensions/resolution I can use for a 7ft x 2ft banner? [duplicate]

I am designing a banner which will be printed at 7ft x 4ft. I am using Photoshop CS4. The images are not vectors. The original poster artwork has been done at 300 ppi for A4 printing. I was ...
1
vote
1answer
319 views

Calculating dots per pixel when printing an image

There is a nice article I found explaining dots, pixels, ppi, dpi etc. Here it is. Very good overall, but I got confused at one point where it says: For example, if you are printing a 150ppi image ...
0
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2answers
30k views

How does size work with PNG-8 and PNG-24 images?

I am desperately trying to save a psd file as a high res png. I found some relevant setting when I click Save for Web in photoshop but then I got confused about size vs resolution. I found this ...