Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Mail Merge Preview — free online tool
Check personalized emails before you send them. Free and online, right in your browser, with nothing uploaded.
Margin & Markup Calculator — free online
Turn cost and price into gross profit, margin % and markup % free and online, right in your browser with nothing uploaded.
Markdown Editor — free online tool
Write Markdown and see the formatted result live, right in your browser. Free and online, nothing gets uploaded.
Markdown Table Generator — free online
Build a Markdown table in a visual grid and copy the ready syntax for any README or doc — free and online, right in your browser, nothing uploaded.
Markdown to HTML — free online tool
Turn Markdown into clean HTML free and online, right in your browser, with nothing uploaded. Paste your text, get the code, copy it.
Marketplace Image Resizer — free online
Resize product photos to the exact size Amazon, Etsy, eBay or Shopify need, free and online — right in your browser, nothing uploaded.
Markup to Margin Converter — free online
Turn markup into margin or margin into markup with a clear $100 example, free and online, right in your browser with nothing uploaded.
Media Consent Form Generator — free online
Make a photo and video consent and likeness release form free online, right in your browser. Nothing is uploaded.
Medical Disclaimer Generator — free online
Make a clear "not medical advice" disclaimer for your health or fitness site, free and online — right in your browser, nothing uploaded.
Meeting Cost Calculator — free online
See what a meeting really costs in dollars. Free online tool that runs right in your browser, nothing uploaded.
Get new posts
Soon you'll be able to drop your email and get new posts — no account, no spam.
Email sign-up isn't live yet — nothing is collected for now.