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
Missing GDers in tags
Kiai flashes
Storyboarded hit sounds
Too short sliders
Too short hit sounds
Inconsistent mapset id, countdown, epilepsy warning, etc
Column usage
Too short spinner
Higher-snapped hyperdash
Imbalanced hit sounds
Edge dashes
Abnormal amount of slider nodes
Double barlines
Consecutive basic-snapped hyperdashes
Silent hit sounds not using the 44-byte blank.wav
Too dark or bright combo colours or slider borders
Audio channels in video
Frequent finish hit sounds
Burai slider
Inconsistent uninherited lines, meter signatures, or BPM
Too high or low audio bitrate
Multiple or missing audio files
Unrankable finishers
Perfect stacks too close in time with Hard Rock applied
Missing GDers in tags
Kiai flashes
Storyboarded hit sounds
Too short sliders
Too short hit sounds
Inconsistent mapset id, countdown, epilepsy warning, etc
Column usage
Too short spinner
Higher-snapped hyperdash
Imbalanced hit sounds
Edge dashes
Abnormal amount of slider nodes
Double barlines
Consecutive basic-snapped hyperdashes
Silent hit sounds not using the 44-byte blank.wav
Too dark or bright combo colours or slider borders
Audio channels in video
Frequent finish hit sounds
Burai slider
Inconsistent uninherited lines, meter signatures, or BPM
Too high or low audio bitrate
Multiple or missing audio files
Unrankable finishers
Perfect stacks too close in time with Hard Rock applied
Perfect stacks too close in time with Hard Rock applied
Unrankable finishers
Multiple or missing audio files
Too high or low audio bitrate
Inconsistent uninherited lines, meter signatures, or BPM
Burai slider
Frequent finish hit sounds
Audio channels in video
Too dark or bright combo colours or slider borders
Silent hit sounds not using the 44-byte blank.wav
Consecutive basic-snapped hyperdashes
Double barlines
Abnormal amount of slider nodes
Edge dashes
Imbalanced hit sounds
Higher-snapped hyperdash
Too short spinner
Column usage
Inconsistent mapset id, countdown, epilepsy warning, etc
Too short hit sounds
Too short sliders
Storyboarded hit sounds
Kiai flashes
Missing GDers in tags
Perfect stacks too close in time with Hard Rock applied
Unrankable finishers
Multiple or missing audio files
Too high or low audio bitrate
Inconsistent uninherited lines, meter signatures, or BPM
Burai slider
Frequent finish hit sounds
Audio channels in video
Too dark or bright combo colours or slider borders
Silent hit sounds not using the 44-byte blank.wav
Consecutive basic-snapped hyperdashes
Double barlines
Abnormal amount of slider nodes
Edge dashes
Imbalanced hit sounds
Higher-snapped hyperdash
Too short spinner
Column usage
Inconsistent mapset id, countdown, epilepsy warning, etc
Too short hit sounds
Too short sliders
Storyboarded hit sounds
Kiai flashes
Missing GDers in tags
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.
Go to Downloads