Presentation contrast checker for slides
FavoritePresentation contrast checker finds tiny text and weak colors on slides before you present. Upload a PDF and get short, plain notes. Free, up to 5 checks per day.
How it works
- 1
Upload a PDF
The deck file or a slide photo — as it will appear on screen.
- 2
Readability check
Small type, weak contrast, and clutter — without a full story review.
- 3
3–5 notes
A short list. For structure and meaning — use full presentation review.
Quick readability check: tiny type, gray-on-gray, thin chart lines. For a full structure and messaging review, use Review presentation. (Separate from the WCAG color contrast checker.)
Need more room?
Pro lifts daily file caps. Plus adds keyword research when you outgrow free checks.
Why people use Toolsy
Fast
You get the result in a second. No waiting in a line.
Private
Browser tools stay on your device. Uploaded files are processed and discarded with the response.
No sign-up
Open the page and start. An account is only for paid plans.
Other tools
Why use a presentation contrast checker on slides?
On a projector or in Zoom, gray text and tiny labels vanish. A presentation contrast checker catches those problems before your audience does.
Upload a PDF export of your deck. You get a handful of plain notes on contrast, text size, and slide clutter. No long report to wade through.
This is a quick pass, not a full review. For structure and wording fixes, open Review presentation. For two-color WCAG ratios, use the contrast checker.
Good for
- Pitch decks
- Class slides
- Webinars
- Conference talks
Tips
- Export slides as PDF
- Avoid gray body text
- Use 24pt+ for body copy
- Check chart label sizes
Common questions
What does a presentation contrast checker look for?
It flags hard-to-read slides: low contrast text, small fonts, gray-on-gray pairs, and crowded layouts.
Is this presentation contrast checker free?
Yes. You get up to 5 checks per day with no subscription.
Which file works for a slide contrast check?
Upload a PDF or a slide image. For PowerPoint files, save as PDF first.
How is a presentation contrast checker different from a WCAG contrast checker?
This tool reads your whole slide deck and notes readability problems. The WCAG checker tests two hex colors you pick.
Can a presentation contrast checker replace a full deck review?
No. It gives 3 to 5 short notes on readability only. Use Review presentation for story and messaging feedback.