Princeton Plasma Physics Lab · Department of Energy
pppl.gov
Federal: Section 508 applies, not Title II · 20 pages and a keyboard test, checked October 6, 2026
87out of 100
0critical barriers
The automated checks found no control a visitor can’t use at all.
Compared
The 30 other Department of Energy websites checked average 70.
See how it does today
Our latest check was on October 6, 2026, and the next is in January 2027. You can check pppl.gov yourself now, free. You get a report of your own; this page changes at our next check.
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What we found
What is wrong and who it affects, most serious first.
-
162
162 buttons or links are so small, or so close to others, that people with shaky hands may tap the wrong thing.
- Limited hand movement
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2
2 pages have to be scrolled sideways on a narrow phone screen, so people who enlarge text must scroll back and forth to read each line.
- Low vision
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2
2 lists are built incorrectly, so screen readers may not announce them as lists or say how many items they have.
- Screen readers
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2
2 parts of the page carry screen-reader details that don’t apply to them, so screen readers may describe them wrongly.
- Screen readers
More in the full report
The full report is for the agency’s own staff. It adds:
- The 20 pages we checked, by name
- Where each problem is, with a screenshot
- What needs to change, in the order to fix it
- A new check any day, once something is fixed
The keyboard test
We pressed Tab 72 times through the homepage, as someone who can’t use a mouse would. What it found is shown here and is not yet counted in the score.
- Passed: “Skip to content” works. Keyboard users can jump past the menu.
- Passed: Focus can be seen. Every control we reached shows where the keyboard is.
Questions about this page
Does this mean the agency is breaking the law?
No. Federal agencies follow Section 508 of the Rehabilitation Act, whose standards are built on WCAG 2.0 AA. This is an automated check against WCAG 2.1 AA, which includes every WCAG 2.0 AA requirement. Automated checks find many problems but not all, and only a full review can say whether a site meets Section 508.
Why isn’t there a Title II deadline?
The ADA’s Title II rule and its April 2027 and April 2028 deadlines are for state and local governments. Federal websites already have to meet Section 508.
How often is this page updated?
Every three months, in January, April, July and October. Once its staff claim this page, they can also scan the site again, once a day; the new result shows here like our regular check, marked as checked at their request. The date at the top shows the latest check, and the score can go up as problems are fixed.
How can the agency respond?
Staff with an email address ending in @pppl.gov can claim this page to set its status, see where each problem is, and scan the site again. Think a result is wrong? Tell us and we will check it again.
Work for the Princeton Plasma Physics Lab?
Claim this page to see where each problem is and what needs to change, set its status for the public, and scan again any day.