graphic design

Image File Formats:

  1. JPEG (Joint Photographic Experts Group):
    A common raster image format using lossy compression, ideal for photos with many colors. Smaller file size but some quality loss.

  2. PNG-8 (Portable Network Graphics - 8 bit):
    A lightweight version of PNG with 256 colors (8-bit). Smaller size, good for simple web graphics like logos or icons with limited color.

  3. PNG-24:
    A high-quality lossless format supporting over 16 million colors (24-bit). Ideal for complex images needing transparency without losing quality.

  4. PSD (Photoshop Document):
    Adobe Photoshop’s native format. Supports layers, effects, and transparency. Used for ongoing editing rather than final output.

  5. TIFF (Tagged Image File Format):
    A high-quality raster format used in printing and publishing. Can be either lossless or lossy. Supports layers and transparency.

Image Concepts:

  1. Vector:
    An image made of paths and curves based on mathematical formulas, not pixels. Scales up/down without losing quality (e.g., SVG, AI, EPS).

  2. Rasterize:
    The process of converting a vector image into a raster (pixel-based) image.

  3. Resample:
    Changing the number of pixels in an image, which can affect its resolution. Used when resizing images.

  4. Bitmap:
    A type of raster image made of individual pixels. Also used to describe very simple raster formats (like BMP).

Creative Commons Licenses:

  1. Attribution (CC BY):
    Others can use, remix, tweak, and build upon your work, even commercially, as long as they credit you.

  2. Attribution-ShareAlike (CC BY-SA):
    Same as CC BY, but users must license new works under the same terms (great for open-source or Wikipedia-type use).

  3. Attribution-NoDerivs (CC BY-ND):
    Others can reuse your work, even commercially, but can’t change it in any way.

  4. Attribution-NonCommercial (CC BY-NC):
    Others can remix, tweak, and build upon your work non-commercially. Credit must be given. Derivative works can be under different terms.

  5. Attribution-NonCommercial-ShareAlike (CC BY-NC-SA):
    Same as CC BY-NC, but derivative works must be licensed the same way (non-commercial and share alike).

  6. Attribution-NonCommercial-NoDerivs (CC BY-NC-ND):
    The most restrictive. People can download and share but can’t change or use commercially.