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BFTAW BDPA Workshop. Introduction to GIMP Chris [email protected] 2.16.08. Some Image Types. Bitmap () JPEG (Web) TIFF (Printing) GIF (Small, few colors) PNG (Replace for GIF) XCF (GIMP). Bitmap. Microsoft Paint’s default Uncompressed Windows wallpaper Large file sizes.

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bftaw bdpa workshop


Introduction to GIMP

Chris [email protected]


some image types
Some Image Types
  • Bitmap ()
  • JPEG (Web)
  • TIFF (Printing)
  • GIF (Small, few colors)
  • PNG (Replace for GIF)
  • XCF (GIMP)
  • Microsoft Paint’s default
  • Uncompressed
  • Windows wallpaper
  • Large file sizes
jpeg or jpg
  • Commonly used for pictures (and cameras)
  • Small file sizes (great for web)
  • File size vs quality (user can change)
  • Lossy data compression
  • Static or animated
  • Index colors (256 colors)
  • non-photographic type images (buttons…)
  • Great for printing (Great quality)
  • Large files
  • Optional compression LZW (lossless)
  • Portable Network Graphic
  • W3C standard to replace GIF
  • Doesn’t lose quality (lossless)
  • Transparent
  • GIMP’s file extension
  • Preserves your image as a “working project”
    • Layers
    • Colors
    • History
    • Attributes
image type summary
Image Type Summary
  • Bitmap (Large file size)
  • JPEG (Web Images, small files size)
  • TIFF (Best quality, ideal for Printing, larger file size)
  • GIF (Small, few colors – 256 max, animate, transparent)
  • PNG (Replace for GIF, 16 million colors, transparent, animate)
  • XCF (Preserves layers and other GIMP attributes to create a “working project”)
printing vs web screen
Printing vs Web(screen)
  • Printing
    • dpi: 150 – 300, 400 – 1500 (Pros)
    • CMYK (Cyan, Magenta, Yellow, Key (black) )
    • TIFF or JPEG images
  • Screens
    • dpi: 72
    • RGB (Red, Green, Blue)
    • JPEG, GIF, or PNG images
pixel short for picture element
PixelShort for Picture Element
  • NO inherent height or width
  • NO inherent shape
  • One color (any color)
  • A Screen Resolution (1280x1024)
introduction to gimp toolbar panel
Introduction to GIMP(Toolbar panel)


Properties of the tool

introduction to gimp image panel
Introduction to GIMP(Image panel)


Properties of the tool selected



general topics
General topics
  • Canvas, Images, Layer, Selection
  • Selection
  • Layers
  • Rotate, Scale, Mirror and Resize
  • Crop Images
  • Fill or outline selections
canvas image layer selection
Canvas, Image, Layer, Selection

Canvas (entire boundary)

– resize doesn’t affect image

Image (entire boundary)

– resizes everything including canvas

Layer (black and yellow dotted line)

– only can edit within that box when

you’re on that layer

Selection (black and white dotted line)

- Only changes within selection


Square – Select square images

Lasso – Draw your selection like a pencil

Circle – Select round images

Wand – Select by similar color you select (touching)

Color – Select regions with similar color

Normal, Add, Subtract, Intersect

layers part 1
Layers(part 1)

Top Layer (Transparent background)

Current Layer selected (White background)

Bottom Layer (Covered by current layer)

Layer – Hide or show it

Trash – Delete Layer

Add Layer – Move Layer – Duplicate Layer

Image shown above

layers part 2 pasting a picture
Layers(part 2 – Pasting a picture)
  • Pasting into your picture produces this “Floating” selection
  • You have two options:
  • Anchor the pasted later into the layer underneath
  • Create a new layer and put the pasted layer on top
rotate scale mirror and resize only for layer selection or path
Rotate, Scale, Mirror and Resize(only for layer, selection, or path)







Make your selection

Right click on picture and select

Image -> Crop to Selection

fill or outline selection
Fill or Outline selection
  • Make a selection
  • Pick your color (I used blue)
  • Click the Edit menu
  • Click “Fill with FG Color” (to fill)
  • or “Stroke Selection” (to outline)
advanced topics
Advanced Topics
  • Layer Mask (coming up…)
  • Picture collage
  • Enhance colors
  • Picture touch up
layer mask step 1
Layer Mask(step 1)
  • Create two layers (Mask and Background)
  • Select the top layer (as shown below)

Layer 1 - Mask

Layer 1 - Background

layer mask step 2
Layer Mask(step 2)
  • Use the wand tool to select the inside of the puzzle piece.
  • Delete your selection using the delete key once the space inside the puzzle is selected.
layer mask step 3
Layer Mask(step 3)
  • Continue to do that for the remaining pieces (feel free to try something creative with the black piece!)
gimp resources
GIMP Resources
  • Gimp Resources
    • Tutorials, Inspiration, Patterns, Brushes & More
  • Gimp Tutorials
  • DeviantArt
  • Hawsmont Universe
  • livejournal
  • Snap2Objects – 85 Killer Resources Every Designer Should Know
  • Smashing Magazine