Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Headline Analyzer — free online tool
Paste a headline and get a free score out of 100 online, right in your browser — nothing is uploaded.
HEIC to JPG converter — free online
Turn iPhone HEIC photos into JPG or PNG right in your browser. Free, online, nothing uploaded — your pictures stay on your device.
Hex to Text Converter — free online
Turn hex, binary or decimal bytes into plain text and back, free and online, right in your browser with nothing uploaded.
HMAC Generator — free online tool
Make an HMAC signature from a message and secret key, right in your browser. Free, online, and nothing you type is uploaded.
Billable Hours Calculator — free online
Add tasks with hours and a rate to get your invoice total, free and online, right in your browser with nothing uploaded.
HowTo Schema Generator — free online
Build valid HowTo structured data for Google rich results, free and online — right in your browser, with nothing uploaded.
Hreflang Tag Generator — free online
Build a full set of rel="alternate" hreflang tags from your languages and URLs, free and online, right in your browser with nothing uploaded.
Htaccess Generator — free online .htaccess builder
Build an Apache .htaccess by flipping toggles — free and online. Force HTTPS, www, gzip, caching and more, right in your browser, nothing uploaded.
HTML Entities Encoder & Decoder — free online
Encode or decode HTML entities online, free and right in your browser. Nothing is uploaded, so your text stays on your device.
HTML Head Generator — free online tool
Build a clean <head> block free and online — pick the tags, fill in your values, and copy ready code right in your browser, nothing uploaded.
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