5 tips for adding illustrations to your slides
Published: 10月 6, 2026
Illustrations show scenes and actions that are hard to explain in words. Used carelessly, though, they make a document harder to read. Here are five tips for adding illustrations to work slides and documents.
1. One illustration per slide (three at most)
Illustrations draw the eye, so a slide full of them leaves readers unsure where to look. If a slide makes one point, use one illustration. Even for steps or comparisons, where several similar items sit side by side, about three is the comfortable limit.
An illustration added only because the slide “looks empty” can usually go. Before adding one, ask yourself whether you can say in a few words what it tells the reader.
2. Keep sizes consistent
An illustration that is large on one page and small on the next is surprisingly noticeable. Decide on a size for each role and stick to it:
- Next to a heading: about two to three times the height of the heading text
- As the main visual: about a third to half of the slide height
- In a row of steps or items: all exactly the same size
3. Leave enough white space
An illustration pressed up against text or a frame feels cramped. Leave at least the width of one or two characters between the picture and the text. Transparent PNG or SVG files help here: there is no white box to overlap the text, so spacing is easy to adjust.
4. Stick to one style
Nothing affects how polished a document looks more than a consistent drawing style. When line weights, body proportions and levels of simplification differ, the document looks like a patchwork, whatever its content.
The surest approach is to choose every illustration from one consistently drawn set. FreeIconBazaar draws every subject in three styles — Line, Simple and Rounded — so once you pick a style, the whole document matches. See “Line, Simple or Rounded: choosing an illustration style” for help choosing.
5. Match the colors to your design
An illustration in colors that clash with the slide design stands out for the wrong reasons. If plain black lines feel out of place, change the line color to your heading color or your brand color. That alone makes the picture blend in.
On FreeIconBazaar you can change the line and fill colors on each illustration’s page before saving, or give up to 10 illustrations the same colors and download them as one ZIP. For choosing colors, see “How to match illustration colors to your slide design.”
Summary
- One illustration per slide; about three at most in a row
- Decide a size for each role and keep it
- Leave space between illustrations and text
- Use one drawing style throughout a document
- Match the line color to your color scheme
Keep these five points in mind and your illustrations stop being decoration and start doing real work in your document.
