Free Sniff Score

Paste your homepage. The dog loads it once like a visitor would, on desktop and on a phone, and scores it out of 100 in about 30 seconds.

One page load at desktop and phone width, plus a quick check of up to 20 links. We never log in, never submit forms and never poke at your API. Only sniff apps you own or are building.

Cartoon: a bloodhound sniffs the backside of a worried web app and pulls two bugs out.

What the dog checks

Seven things anyone could spot from your homepage. Here's how the 100 points split.

25 ptsConsole errorsRed lines and uncaught errors while your homepage loads.
20 ptsFailed requestsScripts, images and API calls your page asks for that come back 4xx, 5xx or never.
15 ptsMobile layoutViewport tag, sideways scrolling and tiny text at 390 px.
15 ptsSpeedLoad time, Largest Contentful Paint and page weight.
10 ptsBroken linksUp to 20 links on your homepage that point at your own site.
10 ptsBasicsTitle, meta description, share image, favicon and language.
5 ptsAccessibility basicsImages without alt text, buttons and links with no name.

The free sniff stops at the front door. Signup, login, forms, payments and everything behind them are what the full sniff is for.