IMAGE TYPES
What file type is used for animation?
GIF
What is a pixel?
A basic unit of the image. A single 'dot' of colour in a grid.
What tool lets you draw individual pixels?
PEN
What file type is commonly used for photos and has good compression
JPG
Joint Photographic Experts Group
What is resolution?
The number of pixels in each dimension, e.g. 800x600
What term does Piskel use to refer to your animations?
Sprites
What tool lets you fill an entire area with colour?
PAINT BUCKET?
What file type is commonly used for graphics and is lossless?
PNG
Portable Network Graphics
What is DPI?
Dots per inch.
Often used for printers/screens but images have the same concept if you want to display it at a set physical size.
What is a layer?
Layers are individual canvases within each frame. Drawing on one layer does not affect the other frames.
The final frame is a combination of the layers displayed from the bottom up. (Lower layers are hidden by higher layers)
What tool lets you draw straight lines?
STROKE
What common file type stores all pixels uncompressed
BMP
A single 'slide' in an animated image.
What is the difference between save and export?
Save saves your work in a proprietary piskel format, and can only be opened in piskel.
Export creates a copy of your work in a standard image format. You'll usually use this when you've finished working on it or want to test it in a browser etc.
What tool lets you select colours from the image?
EYEDROPPER
What image type is often used by scanners, and supports multiple pages?
TIFF
Tagged Image File Format
(PDF is a document format not an image format)
What is a lossless image?
A compression algorithim that ensures the image is perfectly preserved.
Lossy image compression loses data and causes some 'artefacts' or errors in the image, but can have smaller file sizes.
What is onion skinning?
Showing the contents of previous frames when editing a subsequent (later) frame
How do you draw thicker lines?
Change the PEN SIZE