Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Event Schema Generator — free online tool
Make a valid Event JSON-LD block for Google rich results — free and online, right in your browser, nothing uploaded.
Excel to CSV Converter — free online
Turn an Excel .xlsx file into a CSV right in your browser, free and online, with nothing uploaded anywhere.
CSV to JSON — free online converter
Turn a CSV into a clean JSON array right in your browser, free and online. Paste your rows and copy the result. Nothing gets uploaded.
Remove EXIF Data from Photos — free online
Strip EXIF and GPS location from your photos before posting — free and online, right in your browser, with nothing uploaded.
Expense Report Generator — free online
Build a clean PDF expense report online, right in your browser. Free, no sign-up, and nothing you type is uploaded anywhere.
Expense Tracker — free online, no install
Track income and expenses by category and watch your balance update live, right in your browser. Free, online, and nothing gets uploaded.
Extract Phone Numbers & URLs — free online
Pull phone numbers and links out of any text and get a clean, duplicate-free list. Free and online, right in your browser, nothing uploaded.
Extract Emails from Text — free online
Pull every email address out of any text or HTML for free online, right in your browser. Duplicates removed, nothing uploaded.
Meta Ad Preview — free online tool
See how your Facebook and Instagram ad looks in Feed and Stories before you publish, free and online, right in your browser, nothing uploaded.
Fake Tweet Generator — free online tool
Make a realistic tweet mockup for memes, quotes or slides, free and online, right in your browser with nothing uploaded.
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