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
Overlay layer usage
Hit objects potentially snapped to the wrong red line
Too high sprite resolution
Difficulty settings outside of the guideline range
Issues with updating or downloading
Perfect stacks too close in time
Inconsistent mapset id, countdown, epilepsy warning, etc
Delayed hit sounds
Low volume hit sounding
Frequent finish hit sounds
Too high or low background resolution
First line toggles kiai or is inherited
Lowest difficulty too difficult for the given drain/play time(s)
Unrankable snapping
Offscreen hit objects
Inconsistent hit sounds between difficulties
Unused files
Incorrect hit sound format
Concurrent hit objects
OD/HP Values too high
Contains hyperdashes
Incorrect marker spacing
Too short drain time
Multiple or missing audio files
Overlay layer usage
Hit objects potentially snapped to the wrong red line
Too high sprite resolution
Difficulty settings outside of the guideline range
Issues with updating or downloading
Perfect stacks too close in time
Inconsistent mapset id, countdown, epilepsy warning, etc
Delayed hit sounds
Low volume hit sounding
Frequent finish hit sounds
Too high or low background resolution
First line toggles kiai or is inherited
Lowest difficulty too difficult for the given drain/play time(s)
Unrankable snapping
Offscreen hit objects
Inconsistent hit sounds between difficulties
Unused files
Incorrect hit sound format
Concurrent hit objects
OD/HP Values too high
Contains hyperdashes
Incorrect marker spacing
Too short drain time
Multiple or missing audio files
Multiple or missing audio files
Too short drain time
Incorrect marker spacing
Contains hyperdashes
OD/HP Values too high
Concurrent hit objects
Incorrect hit sound format
Unused files
Inconsistent hit sounds between difficulties
Offscreen hit objects
Unrankable snapping
Lowest difficulty too difficult for the given drain/play time(s)
First line toggles kiai or is inherited
Too high or low background resolution
Frequent finish hit sounds
Low volume hit sounding
Delayed hit sounds
Inconsistent mapset id, countdown, epilepsy warning, etc
Perfect stacks too close in time
Issues with updating or downloading
Difficulty settings outside of the guideline range
Too high sprite resolution
Hit objects potentially snapped to the wrong red line
Overlay layer usage
Multiple or missing audio files
Too short drain time
Incorrect marker spacing
Contains hyperdashes
OD/HP Values too high
Concurrent hit objects
Incorrect hit sound format
Unused files
Inconsistent hit sounds between difficulties
Offscreen hit objects
Unrankable snapping
Lowest difficulty too difficult for the given drain/play time(s)
First line toggles kiai or is inherited
Too high or low background resolution
Frequent finish hit sounds
Low volume hit sounding
Delayed hit sounds
Inconsistent mapset id, countdown, epilepsy warning, etc
Perfect stacks too close in time
Issues with updating or downloading
Difficulty settings outside of the guideline range
Too high sprite resolution
Hit objects potentially snapped to the wrong red line
Overlay layer usage
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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