Proper way to resize graphics

I was just wondering if there was a proper way of resizing graphics (in this case a logo).

I'm just asking because sometimes I'll just go to 'image size' in photoshop and set it to what I want, but the returned result can sometimes turn out grainy.

Is it a better idea to change the DPI instead?

Thanks for your input

 

the only way you are going to keep the quality in any raster image is to make it smaller and even then you are going to lose some quality and perhaps some detail as well. making a raster image bigger will always result in pixelation to some extent be it a little or a lot depending on the scale of the transformation. this is why all logos should be created as vector graphics in an application specifically designed for it. Adobe Illustrator or Corel Draw or something else. hope this helps.

 

Thats why usually people create logo as vector graphics. So you can resize it without losing quality. If you use photoshop then don't forget to always create the image at a high resolution and as big as possible.

 

Thanks for the tips, though I'm not too familiar with the terms raster and vector, i will check it out

 

Hey there,

I'm used to working in Photoshop, and depending on what you do with it - you can get some nice results. I too, am not used to vector and raster images, although I would like to learn eventually.

with Photoshop specifically, I find that my images stay sharp at large sizes, only if I start very large. For print purposes, usually you'll need around 320 dpi for "paper" print like book covers, flyers, etc. These can be "sized down" for web, and other projects - but never "sized up" with any degree of "clarity." If that makes any sense.

I find it much easier to work with the large images when I "fit them to screen size" so I can see the whole work, and only increase the size to "full screen" when I am doing very detailed work. Sometimes I even zoom in to get pixelated - but I'm sure there are many other graphics people out here in DP - who know of much better ways to do these things.

Any tips?

Thanks!
Michelle

 

vector graphics: a mathematical means of representing pictures by drawing lines and shapes in relationship to designated coordinates. The saved file contains instructions for drawing the image, which can be enlarged or reduced without losing quality. Eps, svg and dxf files are examples of vector graphics.
(www.rbsystems-design.com/html/gloss.htm)

raster graphics: Raster graphics, or bit-mapped graphics, are digital images stored as arrays of pixels for display and modification. In raster data there are no lines, circles, or polygons, only pixels that are grouped to give the appear­ance of these ele­ments.
(https://tsc.wes.army.mil/products/tssds-tsfms/tssds/articles/papers\cadgisconcepts.htm)

 

I try to have all my logos designed in a vector format. This will then allow you to repurpose it in print, web, television, ect without any issues. If you already have a raster logo, there was a old adobe product called streamline that converted photos to vector that might be worth your while.

 

If you have your image, resize it through image size (you have to change only the pixel dimension and resample image checked)
then go to file->save for web

 

=O You all have just answered my biggest wonder! I had never really paid much attention to what a vector graphic was, because I never used my adobe illustrator, I supposed.

*Pulls up illustrator and plays around*

TY!

 

if you have the raw file for the design is easy for you to resize it..the quality always goes down if you compressed it..