Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
CSV to JSON Converter — free online
Turn a CSV file into JSON, or JSON back into CSV, free and online — right in your browser, with nothing uploaded.
CSV to SQL INSERT — free online tool
Turn CSV rows into ready-to-run SQL INSERT statements online, free and right in your browser. Nothing is uploaded.
CSV Viewer — free online, no install
Open a CSV file as a clean, sortable table right in your browser. Free and online, with searching and column sorting, and nothing uploaded.
CSS Cubic-Bezier Generator — free online
Design CSS easing curves by dragging two handles, free and online, right in your browser. Copy the cubic-bezier value, nothing is uploaded.
cURL Command Builder — free online
Build a correct, copy-ready curl command online for free, right in your browser. Pick the method, URL, query params and headers — nothing uploaded.
cURL to Code — free online converter
Paste a curl command and get the same request as JavaScript fetch or Node axios code, free and online, right in your browser with nothing uploaded.
Currency Converter — free online tool
Convert money fast with a rate you type in yourself, free and right in your browser. Nothing is uploaded and nothing is saved.
Current Ratio Calculator — free online
Find your current ratio and working capital from current assets and liabilities, free and online right in your browser, nothing uploaded.
Customer Lifetime Value Calculator — free online
Work out how much a customer is worth to your business over time. Free and online, right in your browser, with nothing uploaded.
Data Anonymizer — free online tool
Replace real names, emails, phone numbers and IDs in a CSV with realistic fake values, free and online, right in your browser with nothing uploaded.
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