Mapset Verifier
The #1 osu! modding tool. Catch issues before they become problems.
Mapset
Verifier
The #1 osu! modding tool. Catch issues before they become problems.
A total of unique checks
Hit sounds referenced without the file being present
Objects close in time not overlapping
Too high video resolution
Contains hyperdashes
Unrankable finishers
Spinner readability
Missing background
Pattern Lengths
Hit objects potentially snapped to the wrong red line
Multiple reverses on too short sliders
Kiai flashes
Inconsistent mapset id, countdown, epilepsy warning, etc
Missing spinner
Edge dashes
Object too close or far away from previous
Chord too big for its difficulty
Burai slider
Too high combo
Difficulty settings outside of the guideline range
Inconsistent uninherited lines, meter signatures, or BPM
Missing genre/language in tags
Overlay layer usage
Too short long notes (less than 30ms)
Inconsistent hit sounds between difficulties
Hit sounds referenced without the file being present
Objects close in time not overlapping
Too high video resolution
Contains hyperdashes
Unrankable finishers
Spinner readability
Missing background
Pattern Lengths
Hit objects potentially snapped to the wrong red line
Multiple reverses on too short sliders
Kiai flashes
Inconsistent mapset id, countdown, epilepsy warning, etc
Missing spinner
Edge dashes
Object too close or far away from previous
Chord too big for its difficulty
Burai slider
Too high combo
Difficulty settings outside of the guideline range
Inconsistent uninherited lines, meter signatures, or BPM
Missing genre/language in tags
Overlay layer usage
Too short long notes (less than 30ms)
Inconsistent hit sounds between difficulties
Inconsistent hit sounds between difficulties
Too short long notes (less than 30ms)
Overlay layer usage
Missing genre/language in tags
Inconsistent uninherited lines, meter signatures, or BPM
Difficulty settings outside of the guideline range
Too high combo
Burai slider
Chord too big for its difficulty
Object too close or far away from previous
Edge dashes
Missing spinner
Inconsistent mapset id, countdown, epilepsy warning, etc
Kiai flashes
Multiple reverses on too short sliders
Hit objects potentially snapped to the wrong red line
Pattern Lengths
Missing background
Spinner readability
Unrankable finishers
Contains hyperdashes
Too high video resolution
Objects close in time not overlapping
Hit sounds referenced without the file being present
Inconsistent hit sounds between difficulties
Too short long notes (less than 30ms)
Overlay layer usage
Missing genre/language in tags
Inconsistent uninherited lines, meter signatures, or BPM
Difficulty settings outside of the guideline range
Too high combo
Burai slider
Chord too big for its difficulty
Object too close or far away from previous
Edge dashes
Missing spinner
Inconsistent mapset id, countdown, epilepsy warning, etc
Kiai flashes
Multiple reverses on too short sliders
Hit objects potentially snapped to the wrong red line
Pattern Lengths
Missing background
Spinner readability
Unrankable finishers
Contains hyperdashes
Too high video resolution
Objects close in time not overlapping
Hit sounds referenced without the file being present
Automatic Snapshots
Automatically track mapset beatmap changes over time. Browse snapshot history and see exactly what was added, removed, or modified.
Automatic Snapshots
Automatically track mapset beatmap changes over time. Browse snapshot history and see exactly what was added, removed, or modified.
Up to Date with Ranking Criteria
Every check is updated to match current Ranking Criteria, from metadata and timing to mode-specific rules.
Up to Date with Ranking Criteria
Every check is updated to match current Ranking Criteria, from metadata and timing to mode-specific rules.
Rich Documentation
Built-in documentation explains each check: what it looks for, and why it matters. Browse the full checks reference without leaving the app.
Rich Documentation
Built-in documentation explains each check: what it looks for, and why it matters. Browse the full checks reference without leaving the app.
Complete Overview
One place to understand your entire mapset — metadata, objects, settings, difficulty curves, and audio quality.
Complete Overview
One place to understand your entire mapset — metadata, objects, settings, difficulty curves, and audio quality.
Objects Overview
See every snap divisor and unsnapped object across all difficulties, plus an interactive timeline to compare patterns side by side.
Objects Overview
See every snap divisor and unsnapped object across all difficulties, plus an interactive timeline to compare patterns side by side.
Difficulty Overview
Interactive charts for star rating, slider velocity, and skill strain for all modes, with drag-to-zoom.
Difficulty Overview
Interactive charts for star rating, slider velocity, and skill strain for all modes, with drag-to-zoom.
Audio Overview
Inspect audio format, ranking compliance, and a visual spectrogram — all without leaving Mapset Verifier.
Audio Overview
Inspect audio format, ranking compliance, and a visual spectrogram — all without leaving Mapset Verifier.
Why Mapset Verifier?
Here's how it fares against other modding tools.
Ready to try Mapset Verifier?
Grab the latest release for your platform, or browse beta builds and release notes on the downloads page.
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