Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Audio to video online — free, in your browser
Turn a song and a picture into a video online, free. No upload, no install — your files never leave your device.
Merge videos online — free, in your browser
Join several video clips into one online, free. No upload, no install — your files never leave your device.
Trim video online — free, in your browser
Cut a clip from any video online, free — fast and lossless. No upload, no install — your file never leaves your device.
Numbers to vCard online — free, in your browser
Turn a list of phone numbers into a .vcf contacts file online, free. No upload, no install — your data never leaves your device.
Compress video online — free, in your browser
Make any video smaller online, free. No upload, no install — your file never leaves your device.
Compress PDF online — free, in your browser
Make any PDF smaller online, free. No upload, no install — your files never leave your device.
Crop video online — free, in your browser
Reframe and crop any video for Reels, TikTok or Shorts online, free. No upload, no install — your file never leaves your device.
Convert audio online — free, in your browser
Convert any audio to MP3, WAV, OGG or FLAC online, free. No upload, no install — your files never leave your device.
Resize images online — free, in your browser
Resize and convert images online, in bulk, then download a ZIP. Free, no install — your photos never leave your device.
Merge PDF online — free, in your browser
Combine several PDF files into one online, in the order you want, for free. No upload, no install — your files never leave your device.
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