Made for figuring things out.

Practical website diagnostics, useful tools, calculators, games, and curious experiments built for the fun of it.

Featured

• Website health check

  Enter your address, get a plain-language report on speed, security, and what needs attention.

  Diagnostics

• Domain and certificate checker

  Who controls your domain, when it expires, and whether your padlock is about to fail.

  Diagnostics

• Email deliverability checker

  Find out if the internet trusts mail from your domain, and why messages go to spam.

  Diagnostics

• What is this site built with

  Platform, plugins, languages, and the things that matter if you ever want to move.

  Diagnostics

Diagnostics

• Website health check

  Enter your address, get a plain-language report on speed, security, and what needs attention.

  Diagnostics

• Domain and certificate checker

  Who controls your domain, when it expires, and whether your padlock is about to fail.

  Diagnostics

• Email deliverability checker

  Find out if the internet trusts mail from your domain, and why messages go to spam.

  Diagnostics

• What is this site built with

  Platform, plugins, languages, and the things that matter if you ever want to move.

  Diagnostics

• Accessibility quick check

  The five accessibility problems most likely costing you customers, in plain words.

  Diagnostics

Tools

• How do you look on Google

  A two-minute self-check of your Google presence, with a grade and fixes.

  Tools

• Image prep

  Drop in a huge photo, get web-ready sizes. Nothing leaves your browser.

  Tools

• Web presence record sheet

  One printable page holding everything about your website that you should not have to remember.

  Tools

• FluidType

  Convert Figma font sizes into CSS clamp values with live preview.

  Tools

• Grammar test review

  Adaptive grammar quiz that focuses on weak spots.

  Tools

Calculators

• Pizza dough calculator

  Tangzhong deep-dish hybrid formula with cold fermentation timing.

  Calculators

Games

• Crater Kings

  Artillery duel on crumbling terrain.

  Games

• Bug muncher

  Munch every bug in a website wireframe before the troublemakers catch you.

  Games

• Brick breaker

  Knock out the dead links, the huge images and the popups, then take down the legacy CMS.

  Games

Experiments

• The lost page

  See what happens when you wander off the map here.

  Experiments

• Falling sand

  Paint sand, water, walls and fire, then watch simple rules take over.

  Experiments

• Conway's life

  Paint cells or drop in a glider gun, then watch four simple rules do the rest.

  Experiments

• Dial-up time machine

  Press connect, sit through the handshake, and watch this site reskin itself as its 56k self.

  Experiments

• Flow field

  Thousands of particles drifting through an invisible current, and a picture you can keep.

  Experiments