Free website check · no account needed

Find what is broken on your website before your visitors do.

BangBang tests speed, security, SEO, accessibility and broken pages in one go, on phones and desktops. You get a clear report of what to fix first.

Results in about 2 minutes 3 free checks a day Passive and safe
What we check

Seven kinds of tests, one report

Pages open in a real Chromium browser at phone, tablet and desktop viewport sizes, with the cookie banner accepted first. Tap a card to see what is inside.

How it works

From address to action plan in minutes

Enter your website

Type the address and press Check. No installation and no access to your server needed.

We test your pages

We find your main pages and open them in Chromium at phone and desktop sizes, like your visitors would.

Fix what matters first

Scores, the issues ranked by impact, and how to fix each one. Share the report with your developer in one link.

200+rules
0device viewports
0test types
~2 minfor a free check
Free account

Keep every report and see what changed

Sign up and your checks are saved. Run the same site again and BangBang shows you what got better and what got worse.

Report history

Every check of every site, with scores over time.

Compare with your last report

New issues, fixed issues and score changes, side by side.

Scheduled checks and alerts

Daily or weekly checks, with email, Slack or Teams alerts when something breaks.

Share with your team

Send a report link, with a password if you like.

www.example.com this week vs last week
ScoreLast weekNowChange
Performance54
+24
SEO82
+13
Accessibility71
-2
Security60
+28
Issues411724 fixed
Questions

Good to know

Is the check safe for my website?

Yes. The free check only does what a visitor's browser does: it opens a handful of your public pages. It does not log in, submit forms or try to attack anything.

How many pages are checked?

The free check looks at up to 5 of your main pages on a phone and a desktop viewport. With an account you can check up to hundreds of pages, more devices and more test types.

Do I need an account?

No. You get 3 free checks a day without one. A free account keeps your reports, lets you compare them over time and removes the daily limit for your own sites.

Can I sign in with my Matter Solutions account?

Yes. Matter Solutions staff and clients with a Spartan account can use "Continue with Spartan". Everyone else can sign up with an email and password.

Can I use it from my own software?

Yes. Everything is available through a REST API with keys, webhooks and a GitHub Actions step. See the API docs.

Check your website now

It is free and takes about two minutes.

Start a free check