The trick with free tools isn't finding more of them. It's choosing the right one for the question you're actually asking, running it on one page that matters, and then doing something with the results. Most nonprofits skip that last step.
Start with a focused, single-page scan
Most general website tools try to scan everything at once, which produces a wall of findings. That's overwhelming for a small nonprofit team. A more useful approach: pick one page (your homepage, your donate page, or a key program landing page) and run a focused scan that only checks the things relevant to a specific concern.
GoodSiteReport offers six free single-page scanners. Each one focuses on a different concern, runs about 15 to 20 checks specific to that area, and emails the results so you have something to refer back to.
Website Health Scan
A general once-over of the basics: HTTP status, HTTPS, page title, headings, alt text, viewport meta, response time, and a sample of links for broken-link detection. The right starting point if you don't know where to begin.
Performance Scan
Focused on what's making the page slow. HTML weight, response time, render-blocking scripts and stylesheets, image lazy-loading coverage, third-party domain count, server compression, browser cache headers, and font-loading strategy.
SEO Scan
What's keeping the page out of Google. Title and meta description quality, heading hierarchy, canonical link, Schema.org structured data, anchor-text quality, mixed-content detection, and thin-content checks.
Accessibility Scan
Reviews the page against WCAG 2.2 AA basics: the html lang attribute, images missing alt text, form labels, empty links and buttons, landmark elements, skip-to-content links, ARIA misuse, autoplaying media, and iframe titling.
Mobile Scan
Mobile-specific concerns most desktop reviews miss. Viewport meta quality, responsive image coverage, tap-target sizing, fixed-width layouts, tappable phone numbers and emails, input-type quality, and the small details like apple-touch-icon and theme-color.
Trust & Credibility Scan
What donors actually check before giving. HTTPS, visible contact information, privacy and terms links, nonprofit transparency markers (501(c)(3), EIN, Candid/GuideStar mentions), physical address presence, copyright currency, and outdated-tech detection.
Each scan takes about 30 seconds. You enter a URL and your email, and the results come back with plain-language explanations and a severity label on each finding.
Other free tools worth knowing about
Pair the focused scanners above with a handful of general tools when you want deeper analysis on a specific dimension:
- Google Lighthouse (built into Chrome DevTools). Right-click on any page, choose Inspect, go to the Lighthouse tab. Runs performance, accessibility, SEO, and best-practices checks. The closest thing to an industry standard for browser-based audits.
- PageSpeed Insights (pagespeed.web.dev). Google's free performance check. Reports Core Web Vitals based on real Chrome user data when available, which is more honest than a one-time lab test.
- WAVE (wave.webaim.org). Accessibility-focused. Shows errors visually on top of your page so you can see what each issue refers to instead of decoding a long list.
- WebAIM Contrast Checker (webaim.org/resources/contrastchecker/). For color contrast specifically. Useful when designing or auditing a new color scheme.
- Schema.org Markup Validator (validator.schema.org). Validates structured data so you know if Google will be able to use it for rich results.
- GTmetrix (gtmetrix.com). Performance-focused, similar to PageSpeed Insights but with different metrics and a free tier that's generous for occasional checks.
How to actually use these tools
The biggest mistake nonprofits make with free tools isn't using them. It's running scan after scan without ever fixing anything. The reports pile up and the website stays the same.
Here's a more useful workflow:
- Pick one page. Usually your homepage or your donate page. Whichever one carries the most weight for your visitors.
- Pick one concern. Performance, accessibility, SEO, or trust. Don't try to fix everything at once. A small team can't.
- Run one scanner. Use the focused tool that matches the concern. Read every finding.
- Identify the top 3 high-severity findings. Most reports rank by impact. Focus there first; ignore the low-severity stuff for this round.
- Make the fixes. Block out time on your calendar. Two hours is usually enough for the highest-impact three.
- Re-scan to confirm. Run the same scanner again to verify the issues are gone.
This workflow is the difference between "I ran a scan" and "I improved my website."
When you're ready for more than a single page, a paid GoodSiteReport audit covers your entire site, runs deeper checks than any browser tool can, and delivers a board-ready PDF with a prioritized fix list. Pricing starts at $49.
What free tools can't tell you
Free scanners are excellent at finding measurable, technical issues. They can count missing alt attributes, flag a missing meta description, or detect a slow response time. What they can't do is interpret what's there.
A scanner doesn't know whether your homepage actually communicates your mission to a first-time visitor. It can't tell you whether your donate page makes sense to a donor who has never heard of your organization. It can't read the trust signals on your site from the perspective of a specific donor audience.
That's the gap a human review fills. Free tools find what's measurable. A real audit interprets what's there and tells you what to do about it.
For most nonprofits, the right approach is to use free tools regularly (a quarterly check on your most-visited pages is reasonable) and book a deeper audit before any significant moment: a redesign, a major fundraising campaign, a grant submission, or a strategic shift.
A starting point if you don't know where to begin
If you can only do one thing today: run the Website Health Scan on your homepage. It's the broadest of the six scanners, takes about 30 seconds, and the email summary gives you a focused list of issues to investigate. From there, run the more specific scanners on the concerns that came up.
Free tools won't replace the perspective of a thoughtful audit. But they'll tell you whether your nonprofit website is in a hole, on stable ground, or built well enough to support whatever comes next.