mdworks is a small collection of free web tools, each built to do one job well and to work straight away — no sign-up, nothing to install, and no files uploaded to us. The tools are written and maintained by one independent developer with a background in electronics and embedded software, who builds them in spare time.
Everything runs in your browser wherever possible. Data you open — an Instagram export, for example — is read on your device and never sent to us. The music charts and song measurements are collected automatically every few hours from public sources; the music about page explains exactly how tempo and key are estimated.
mdworks is not affiliated with Instagram, Meta, X, Spotify, Apple, YouTube or Deezer. Product names belong to their owners and are used only to describe what the tools work with.
The tools are free. Some pages show ads, and if you find a tool useful you can sponsor the project or buy a coffee. Ideas and bug reports are always welcome — see contact.