Storyline's Size and Position window allows you to control any object’s height, width, rotation, scaling, cropping, and its position on the slide. The Size and Position window is also where you can enter alternative text (often called alt text) for any object. Alt text is important for learners with visual impairments who rely on a screen reader to announce the name or description of objects on your slides.
There are a few different ways to access the Size and Position window:
- Select one or more objects on a slide. Then select the Format tab, and click the arrow in the lower-right corner of the Size portion of the toolbar:
- Or, right-click a selected object, and then chose Size and Position.
When the Size and Position window appears, click the Size, Position, or Alt Text tab at the left edge of the window to set your options.
Height and Width: In these fields, you can enter a different value, in pixels, to change the height or width of the object. If the Lock aspect ratio box is marked, and you change an object's height, then Storyline automatically changes the width — and vice versa — to keep the object’s proportions. Also, anytime you change an object’s height or width, the height and width percentages in the Scale portion of the window will change automatically.
Tip: Another way to quickly change an object’s height or width is to select the object, click the Format tab, and enter values directly in the Size fields on the toolbar:
Rotation: Use this field to enter a rotation value, in degrees. You can enter a number or use the arrows to increase or decrease the value. A positive number rotates the object clockwise; a negative number rotates it counterclockwise. The rotation option is available on any object except movies.
Tip: Another way to rotate an object is to select the object, hover over the green handle till the cursor changes to a curved arrow, and then click and drag.
- Scale Height and Scale Width: These fields give you another way to change the height or width of an object. You can enter a different percentage in either field, or use the arrows to increase or decrease the value. If the Lock aspect ratio box is marked, and you change the scale height, then Storyline automatically changes the scale width — and vice versa — to keep the object’s proportions. Also, anytime you change an object’s scale height or scale width, the actual pixel height and width in the top part of this window will change automatically.
- Lock aspect ratio: This keeps the object’s proportions (the ratio of height to width) even if you resize the object.
Crop from Left, Right, Top and Bottom: These fields allow you to crop the object by a specific number of pixels. The cropping options are only available on pictures, screenshots, and characters.
Tip: Another way to crop is to select the object, click the Format tab, and click the Crop button on the toolbar. Then drag the black handles that appear on the edges of your object to crop it.
- Reset: This button allows you to reset the object to its original size.
Although it's easy to move an object on your slide by just clicking and dragging it, sometimes you might want more control over its exact position. The Position fields on the Size and Position window allow you to specify exactly where the object appears on the slide. Use the Horizontal and Vertical fields to enter a pixel value, and then use the From selectors to indicate the relative location.
The Alt Text section of the Size and Position window is where you can enter preferences that affect screen readers and keyboard navigation.
When a learner uses a screen reader or presses the Tab key to navigate through the items in your course, the content is read from the top-left of the player to the bottom-right. Screen readers announce each object on the slide according to the object names on the Storyline timeline. There are two ways you can customize this behavior:
- Object is visible to accessibility tools: You can unmark this box if you prefer that the object not be detected by screen readers nor keyboard (Tab) navigation. A common situation when you might do this is if you have objects on your slide that are purely part of the slide's aesthetic design—for example, rectangles or lines that create visual boundaries on your slide—and which don't contribute to the content's meaning.
- Alternative text: If you'd like screen readers to use a name or description that's different from whatever name appears for the selected object on the Storyline timeline, enter that alternate text here.