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Photoshop Designing Graphics for the Web

Explore Photoshop basics, uses, limitations, and file formats. Learn to create high-quality web graphics, navigate tools, optimize images, and save for the web. Enhance your design skills with color adjustments and special effects.

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Photoshop Designing Graphics for the Web

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  1. PhotoshopDesigning Graphics for the Web

  2. Overview • Photoshop Basics • What is Photoshop? • Uses • Tour • Web Graphics • Graphic Limitations • Display Considerations • Cross-Platform/Browser-Safe Palette • File Formats • Transparent Text • Saving for the Web

  3. What is Photoshop? Photo retouching, image editing, and color painting program; graphic design tool • Create high-quality digital images • Tools & special effects capabilities • Manipulate scanned images, slides, & original artwork • Isolate parts of an image for experimentation & individual editing • And lots more…..

  4. Uses of Photoshop • Art (line drawings, charcoal, color original) • Photographic • Restoration • WWW (GIFS, JPEGS, etc.) • Color Separations • Posterizations • Special Effects

  5. Touring Photoshop • Using Help • Navigating: Windows, Palettes, Features & Tools • Preferences

  6. Graphic Limitations • Connection Speeds • User Configurations

  7. Display Considerations • Screen Sizes • Colors

  8. Cross Platform/Browser-Safe Colors • 256 vs. 216 Colors • Dithering • Using the Color Picker

  9. File Formats • JPEG – Joint Photographic Experts Group • GIF – Graphics Interchange Format • PNG – Portable Network Graphics

  10. JPEG • Best for photos or continuous tone, full-color images • Uses 16 million colors • Browsers use reasonable approximations • Work in RGB mode • Uses lossy compression • Saving (Standard, Optimized, Progressive)

  11. GIF • Best for solid color images (buttons, logos) • Uses 256 colors • Browsers uses 216 colors • Work in Indexed mode • Good compression • Interlaced

  12. PNG (8-bit) • Best for line art (logos) • Compresses solid areas of color well and maintains sharp detail • Generally, has better compression than GIF (10-30% smaller) • If considering saving as GIF, also consider saving as PNG (8-bit) • Not supported by older browsers

  13. PNG (24-bit) • Best for continuous-tone images • Compresses well, but can be larger than JPEGs • If considering saving as JPEG, could also consider PNG (24-bit) • Not supported by older browsers

  14. JPEG vs PNG Comparison of JPEG and PNG 68K PNG 31K JPG

  15. GIF vs PNG Comparison of JPEG and PNG 10.8K PNG-8 with 64 colors 9.5K GIF with 64 colors

  16. Transparent Text Web Graphics

  17. Saving for the Web • 4-Up View • File Sizes and Download Speeds • Changing Options • Halo Effect and Matte Options

  18. Scanning Concepts • Getting Images Into Photoshop • Bitmap vs. Vector Graphics • Pixel Dimensions • Image Resolution • Monitor Resolution • Printer Resolution • Screen Frequency • File Size

  19. Evaluating Originals • Color Range • Contrast • Size • Good Original • Shadow & Highlight Detail • Tonal Corrections

  20. Basic Image Correction • Examine the Original • Scan the Original • Identify the Image Colors & Tones • Measure & Adjust Highlights • Measure & Adjust Shadows • Measure & Adjust Midtones • Apply Unsharp Mask • Save File • Review Image for Rescanning or Additional Corrections

  21. Color & Tonal Adjustments • Histograms • Navigator Palette • Gamma Settings • Curve Controls • Unsharp Mask Filter

  22. Summary • Photoshop Basics • What is Photoshop? • Uses • Tour • Web Graphics • Graphic Limitations • Display Considerations • Cross-Platform/Browser-Safe Palette • File Formats • Transparent Text • Saving for the Web

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