GUIDELINES FOR SCREEN-BASED MEDIA CHANNELS

Media
The word media refers to any form of communication that delivers information. The main goal of the media is to inform or communicate with the greatest number of people possible. Common media channels include anything from printed paper to digital data: newspapers, magazines, radio, television, internet sources like blogs or online publications, and more. 


Rules for all media (print and screen)
- Create a focal point to draw people’s attention.
- Maintain the hierarchy of information: use font size, contrast, and color to visually convey the relative importance of information
- Use consistency, repeat key design elements, especially in multi-page documents.
- Flush left layout for a body copy
- Avoid 'widows', 'orphans', 'runts':
Widow: A widow occurs when the last line of a paragraph is not able to fit at the bottom of a page or column. Instead, it sits at the top of the next page.
Orphan: An orphan is the exact opposite of a widow. It's when the first line of a paragraph sits at the bottom of a page by itself.
Runt: A runt can occur anywhere throughout a page or column - when the last line found in a paragraph ends with a single word.
- Format the elements like heading and body type as paragraph styles (we will learn it).
- Limit the total number of fonts you use in a design and select fonts that pair well together.
- Use kerning, tracking, leading and alignment to make your text more readable.
- Ensure there is enough contrast between the text and the background.
- Avoid all caps for a body copy
- Spell-check your text, and proofread it to catch errors that spell-check misses.


Difference in Screen vs. Print
1. Measurement:
Don’t think in terms of print. Digital design uses pixels, not picas or inches, to measure dimensions. Computer monitor resolution is 72 dpi. 


2. Colors:
- You will work with RGB (Red, Green, and Blue), not CMYK (Cyan, Magenta, Yellow, and Black).
- Brightness and saturation of colors are much more intense on screen than on paper.
- Display on different devices can vary – computers (Mac vs. PC), monitors (calibrated quality), digital display screens, TV (latest screen technology), etc.


3. Typography:
- Pay special attention to readability – the amount of effort it takes to read your text; it is more difficult to read from the screen (the presence of light, glare, and reflections) 
- Font size should not be too small, 14-18 px. is OK
- Choose simple, legible typefaces.
- Do not make your text lines too long or too short for the medium. The number of characters (with spaces) per line should be around 55-75, 60 is perfect number (smaller for mobile devices: 30-40 characters)
Text line width in pixels: about 500 pixels with fonts set to around 14-16px – normal browser defaults


4. Interactivity
We will use some basic simple interactivity such as navigation and buttons, but be careful: 
- Consider the medium - not all interactions work in all formats and on all devices.
- Use interactivity consistently. For example, make sure navigation is consistent between pages. 
- Do not use too much interactivity, it will confuse the viewer. 
- Do not forget to test!


5. Saving
    Method 1:
The Export dialog offers two options for PDF: print and interactive. You have to save it as Adobe PDF (Interactive), otherwise interactivity will not work. 
    Method 2:
Choose File > Publish Online to publish any InDesign document to the web and share it on social networks, via email, or as a standalone URL. The online document supports all of your InDesign document’s interactivity.
Publish online tutorial