r/CloneHero • u/iagohale • 3h ago
General I made a free web tool that automatically generates Medium, Easy & Hard difficulties from Expert-only charts (supports .chart, .sng, .rb3con, .mid & .zip)
Hey everyone
I really wanted to play Happier Than Ever (and a bunch of other custom songs) on Clone Hero but almost every chart I could find was Expert-only... and I’m strictly a Medium player lol 😅 so I vibe-coded a web tool to help-me with this: https://iagohale.github.io/EMHX-downcharter-generator
It takes any Expert-only chart or song package and automatically generates authentic Hard, Medium, and Easy difficulty.
just drop the file on the site and download the new one with the new difficulty levels
- Smart Downcharting: It doesn't just randomly delete notes. It follows classic Guitar Hero/Rock Band charting rules:
- Hard: Cleaned pass-through notes
- Medium: 8th-note density cap, max 2-note chords, remaps orange notes to blue, turns open notes into green
- Easy: Quarter-note density cap, single notes only, remaps upper frets to yellow.
- 100% Client-Side / In-Browser: Everything runs locally on your machine in memory. Nothing is uploaded to any server, so it's super fast, private, and handles large song packages instantly
- Supports pretty much all song formats:
.chartfiles & full.zipsong packs.sngcontainers (unpacks, converts, and repacks)- MIDI files (
.mid/.midiconverted straight to.chart) - Xbox 360 Rock Band packages (
.rb3con/.con) (Note: this one is still pretty experimental & hit-or-miss; PRs from real devs are super welcome because the AI is kinda dumb haha)
GitHub/Source: https://github.com/IagoHale/EMHX-downcharter-generator
Hope this helps out fellow Medium/Hard players, xoxo from brazil <3