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An AI presentation maker will turn a paragraph into twelve slides in under a minute. That part works, and it is genuinely impressive the first time.
What it produces is a draft with a consistent set of problems, and knowing them in advance turns forty minutes of fixing into ten. This is a list of what to fix rather than a list of which tool to fix it in, because the fixes are the same everywhere.
Problem One: Every Slide Is a Paragraph
Generated decks put your content on the slides. All of it. Full sentences, four or five bullets deep, because the model was given text and asked to produce slides and that is the literal reading.
The result is a document formatted as a presentation. Your audience reads it, which means they stop listening to you, because nobody can do both. The fix is unglamorous: cut each bullet to its noun phrase and move the sentence into the speaker notes where it belongs.
Problem Two: The Generated Structure Has No Argument
Outlines come back as topic surveys. Background, then current situation, then options, then conclusion. Nothing is wrong with any of it and nothing in it makes a case.
A presentation that needs to land a decision runs differently: what the problem costs, what you propose, what it takes, what happens if nothing changes. The generated version buries the ask on slide eleven. Move it forward, and cut whatever does not support it.
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The result is a document formatted as a presentation. Your audience reads it, which means they stop listening to you.
Problem Three: The Templates Fail on Contrast
This is the one that gets skipped and it is the one with a standard attached. Generated themes lean on light grey text on white, thin fonts, and colour to distinguish categories in charts.
The W3C’s Web Content Accessibility Guidelines set a minimum contrast ratio of 4.5:1 for normal text. Plenty of default AI themes do not clear it, and a projector in a lit room makes it dramatically worse than it looked on your monitor.
| Default you will get | What to change it to |
|---|---|
| Light grey body text | Near-black on white, or near-white on dark |
| 18pt body text | 24pt minimum for a room |
| Categories shown by colour alone | Direct labels on the chart |
| Thin display fonts | Regular or medium weight |
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Problem Four: The Stock Imagery Says Nothing
Generated decks reach for an abstract image per slide. It fills space, adds nothing, and costs the audience a moment of working out whether it means something.
An image earns its place when it carries information a sentence cannot: a chart, a screenshot, a photograph of the actual thing. Otherwise leave the space empty. Empty space reads as confidence.
These tools convert input into slides without evaluating whether the input has a point.
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Where These Tools Genuinely Win
Having listed the problems, the case for using one is still strong in specific circumstances.
| Situation | Worth it? |
|---|---|
| Internal update, low stakes, due tomorrow | Yes, ship the draft with light edits |
| You have the content and hate formatting | Yes, this is the sweet spot |
| Teaching material you will reuse for years | Yes as a starting layout, then fix contrast properly |
| Pitch that decides funding | Use it for layout only. The argument has to be yours |
| You do not yet know what you are arguing | No. It will format your confusion attractively |
That last row is the real caution. These tools convert input into slides without evaluating whether the input has a point, and a well-designed deck saying nothing is harder to fix than an ugly one that does.
Getting a usable first draft out of any of them comes down to how you frame the request, which is the same skill covered in How to Write Good AI Prompts.
FAQ: Frequently Asked Questions
Are free AI presentation makers good enough?
For internal and low-stakes decks, yes. The output is a reasonable draft with predictable weaknesses in text density, contrast and structure, all of which you can fix faster than building from blank.
Will people know the deck was AI-generated?
They notice the symptoms rather than the origin: uniform layouts, paragraph bullets, decorative stock images. Cutting the text and replacing the imagery removes the tell entirely.
What should I fix first if I only have ten minutes?
Text density, then contrast. Cut every bullet to a noun phrase and darken the body text. Those two changes carry most of the improvement.
Can I export to PowerPoint or Google Slides?
Usually yes, though free tiers sometimes watermark exports or restrict formats. Check before building a deck you need to hand over in a specific file type.
Accessibility figures cited refer to the WCAG minimum contrast requirements; check the current guidelines directly for anything you are formally required to meet. Free-tier export terms vary and change.