The accessibility screenshot tool
TheWCAG turns a screenshot into a structured accessibility report. Capture any part of any app, flag issues against specific WCAG success criteria, measure target sizes, probe contrast, and share the result as a link your team can open. Here is the full workflow.
Step by step
Capture a region
Press the Capture shortcut (default ⌥⌘S on macOS, Ctrl+Alt+S on Windows). The screen freezes with a magnified loupe. Drag a box around the area you want, or press Space to capture the whole screen. The capture opens in the annotation window.
Flag an issue
Press I and click where the problem is to drop a numbered issue marker. Each marker becomes a row in the findings panel. Add as many as you need - they stay anchored to the image as you zoom and pan.
Describe it against WCAG
For each marker, pick the WCAG success criterion it violates (e.g. 1.4.3 Contrast, 2.5.8 Target Size), set a severity (blocker, major, minor), and write a note. This turns a screenshot into a structured, standards-referenced report.
Measure & probe
Use the ruler to measure any element - targets under 24×24px are flagged for WCAG 2.5.8. Use the contrast probe to click two points in the capture and read the exact ratio, attaching it to a finding.
Redact anything sensitive
Draw a solid block over private data before sharing. Prefer solid redaction over pixelation - pixelation can sometimes be reversed on text.
Save or publish
Export the annotated image as PNG, or the findings as Markdown, for a ticket or doc. Or publish to a shareable app.thewcag.com link that anyone can open in a browser - no account required to view.
Keyboard shortcuts
| Action | macOS | Windows |
|---|---|---|
| Pick color pair | ⌥⌘P | Ctrl+Alt+P |
| Capture region | ⌥⌘S | Ctrl+Alt+S |
| Toggle color-blindness lens | ⌥⌘L | Ctrl+Alt+L |
| Drop an issue marker | I, then click | I, then click |
| Pan / zoom the capture | Scroll / ⌘-scroll | Scroll / Ctrl-scroll |
All global shortcuts can be remapped in the app.
Frequently asked questions
- Do reviewers need to install anything to see a report?
- No. Published reports are web pages at app.thewcag.com/s/… that open in any browser. Only the person creating reports needs the app and an account.
- Where are captures stored?
- Captures stay on your machine until you choose to publish one. Published images are stored in our object storage, with a per-account 1 GB limit; you can delete any shared screenshot at any time.
- Can I change the keyboard shortcuts?
- Yes. Every global shortcut is remappable from the app's main window.
Next, learn the WCAG contrast requirements or read our accessibility statement.