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Optimizing photographs

From: Photoshop CS6 for Web Design

Video: Optimizing photographs

When you're saving photographs to be placed on the web, it's a little bit different than just saving out a standard JPEG file from Photoshop normally. So in this movie, we're going to be exploring how to optimize a photograph for the best quality, and also best size, depending on where you're sending it on the web. So I am going to go up to the File menu and I'm going to choose Save for Web. That's going to open up the Save for Web dialog box for me. And I'm going to make sure, first of all, that I've got the right format selected, because once I open this up, it might switch to something like GIF or PNG. For photographs, the best format is going to be JPEG because that's going to give you the smoothest transition in color.

Optimizing photographs

When you're saving photographs to be placed on the web, it's a little bit different than just saving out a standard JPEG file from Photoshop normally. So in this movie, we're going to be exploring how to optimize a photograph for the best quality, and also best size, depending on where you're sending it on the web. So I am going to go up to the File menu and I'm going to choose Save for Web. That's going to open up the Save for Web dialog box for me. And I'm going to make sure, first of all, that I've got the right format selected, because once I open this up, it might switch to something like GIF or PNG. For photographs, the best format is going to be JPEG because that's going to give you the smoothest transition in color.

It's also going to give you the widest gamut of color, and also the best file size for the quality that you get. So let's go ahead and come up here to the top and let's change this to a JPEG. Now also, it's very rare that I am going to be putting an image of this size anywhere on the web. This image is 1024 x 768. So let's say for instance that I needed this to be something that's going to sit in sidebar of one of my web pages, or maybe it's even the header image of a blog post. So what I am going to do is change the Image Size down here at the bottom as well. That's going to give me a better idea of how big this file is going to be.

So I am going to come down and let's say that I need this to be about 600 pixels wide, and once I do that, I'll click in the next box, and it automatically optimizes it down to that size for me. Now you're seeing here at the bottom that it is in JPEG format. It's only 48.09 K, which is a pretty small file size for the size that I am getting here. But I might want to try to crank that down a little bit. So let's come up here to the top again, and let's try to optimize this a little bit better. Let's change this from High Quality to Medium Quality, and you'll notice that I don't see a big shift in the image itself.

As a matter of fact, the quality looks just about the same as it does at the High setting that we just had. However, the file size has been cut in half to 22.8 K. Now if I take this down even more to Lower, you're going to start to see some serious artifacts pop up right here around the middle of the image. And if I zoom in, you'll really start to see it right around here. So watch the difference between Low, and Medium, High, Very High, and Maximum. You can see, as you get higher and higher, the quality difference isn't all that great.

It's not like on TV when you see the crime techs hitting the Enhance button on the keyboards; it's not ever going to be that clear. But dialing this back from Very High to High even takes it back to 48 K. Dialing it back to Medium takes it back to 22 K. If we kept it on something like Maximum, the file size would be 226 K. That's extremely large for an image. So backing it down to something like Medium is very acceptable, and at 100% magnification, I really can't tell the difference between Medium and High anyway. You can also change the Quality setting here if you wish.

Changing the Quality setting does affect the overall quality of the image and the file size, so if I crank this up to 100, you see that goes to 226 K, and cranking that back to 30 changes that to 22 K. Essentially, what you have here are presets for the Quality, and over here is just a slider for the Quality. So you can drag this up and down to change the quality and watch the file size change here, or you can simply pick one of the presets. Totally up to you. Now that I'm finished with the Quality setting--and I've got a pretty small image, 22.8 K.

Seems pretty good. I am going to make sure that no color profile is embedded. I am also going to make sure that I'm not converting to sRGB. My preview is in Monitor Color. That way I am getting an accurate preview of what the image is going to look like on the web. From here, I simply go down to the Save button, and once I go down to the Save button, I am just going to save this out to my desktop as big_bot.jpg, and I will hit Save. And now I have that file saved out on my desktop, and if I open it up, there you see it. It's at 100%, looks pretty good.

If I take a look at the original PSD file, there's not a whole lot of quality loss between the two, if any whatsoever. So I've got a file now that is really optimized to be on the web as opposed to something that was almost 2.5 megabytes when I first started. So as you start to send your images out for the web, be sure to take the time to go into the Save for Web dialog box and tweak the way that they're optimized and all of the different settings that you have available to you so that you get the smallest file size with the best amount of quality for your web site.

Show transcript

This video is part of

Image for Photoshop CS6 for Web Design
Photoshop CS6 for Web Design

75 video lessons · 50243 viewers

Justin Seeley
Author

 
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  1. 1m 9s
    1. Welcome
      48s
    2. Using the exercise files
      21s
  2. 25m 50s
    1. Designing for screens
      1m 8s
    2. Decoding screen size and resolution
      3m 9s
    3. Exploring the PSD-to-HTML workflow
      2m 25s
    4. Setting up Photoshop for web work
      5m 29s
    5. Creating a new document for web
      2m 36s
    6. Creating a new document for mobile
      4m 24s
    7. Setting up a responsive web layout
      3m 31s
    8. Creating email newsletter documents
      3m 8s
  3. 20m 39s
    1. Adjusting color settings
      4m 13s
    2. Understanding web color
      4m 0s
    3. Creating a color palette
      4m 56s
    4. Creating custom swatches
      3m 34s
    5. Applying color to shapes and graphics
      3m 56s
  4. 20m 36s
    1. Exploring the Layers panel
      4m 9s
    2. Renaming and grouping layers
      7m 19s
    3. Searching and filtering layers
      3m 11s
    4. Using layer comps effectively
      3m 4s
    5. Using automatic layer selection
      2m 53s
  5. 29m 2s
    1. Using vector shapes vs. pixel shapes
      3m 31s
    2. Creating vector shapes
      5m 2s
    3. Working with fills and strokes
      4m 36s
    4. Working with Smart Objects
      7m 47s
    5. Importing images
      3m 57s
    6. Cropping and resizing images
      4m 9s
  6. 28m 48s
    1. Planning your project
      3m 13s
    2. Using guides and rulers
      6m 40s
    3. Using a grid system
      8m 28s
    4. Developing a layout with shape layers
      4m 4s
    5. Making pixel-perfect adjustments
      6m 23s
  7. 23m 19s
    1. Using point text vs. paragraph text
      2m 10s
    2. Using text as text vs. using text as an image
      2m 47s
    3. Understanding web-safe fonts
      2m 41s
    4. Inserting placeholder text
      4m 2s
    5. Creating and using character styles
      2m 37s
    6. Creating and using paragraph styles
      6m 11s
    7. Creating editable 3D text
      2m 51s
  8. 26m 54s
    1. Understanding layer styles
      7m 0s
    2. Creating and using drop shadows
      3m 23s
    3. Creating better bevels
      6m 9s
    4. Simulating metallic textures
      5m 8s
    5. Saving and applying layer styles
      2m 48s
    6. Turning layer styles into independent layers
      2m 26s
  9. 50m 23s
    1. Starting with a wireframe
      54s
    2. Organizing page structure
      2m 29s
    3. Adding master elements
      5m 37s
    4. Creating navigation
      4m 36s
    5. Working with photographs
      4m 0s
    6. Working with text
      8m 31s
    7. Creating media placeholders
      7m 22s
    8. Creating buttons
      7m 15s
    9. Creating form fields
      7m 54s
    10. Simulating pages with layer comps
      1m 45s
  10. 33m 38s
    1. Understanding slicing
      2m 4s
    2. Slicing up a mockup
      4m 15s
    3. Understanding web file formats
      4m 3s
    4. Exploring the Save for Web dialog
      5m 3s
    5. Optimizing photographs
      4m 17s
    6. Optimizing transparent graphics
      4m 56s
    7. Saving Retina display graphics
      5m 34s
    8. Using the Image Generator (NEW)
      3m 26s
  11. 10m 40s
    1. Understanding image sprites
      1m 25s
    2. Creating a sprite grid
      2m 54s
    3. Assembling a sprite
      4m 51s
    4. Optimizing sprites for the web
      1m 30s
  12. 18m 6s
    1. Creating a basic action
      5m 28s
    2. Exploring batch processing
      2m 55s
    3. Creating droplets
      3m 20s
    4. Using the Fit Image command
      4m 5s
    5. Using the Image Processor
      2m 18s
  13. 6m 56s
    1. Integrating PSD files with Dreamweaver
      3m 22s
    2. Integrating PSD files with Fireworks
      1m 59s
    3. Integrating PSD files with Muse
      1m 35s
  14. 50s
    1. Goodbye
      50s

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