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
Perfect stacks too close in time with Hard Rock applied
Hit object is unaffected by a line very close to it
Too short spinner
Too short hit sounds
Unsnapped last note hiding barline
Missing spinner
Concurrent or conflicting timing lines
Consecutive basic-snapped hyperdashes
Too high or low background resolution
OD/HP Values too high
Imbalanced hit sounds
Contains hyperdashes
Unused files
Missing custom hitnormal
Too high sprite resolution
Disallowed hyperdash snap
Too high or low audio bitrate
Too dark or bright combo colours or slider borders
Incorrect audio format
Kiai inconsistencies
Inconsistent mapset id, countdown, epilepsy warning, etc
Breaks only achievable through .osu editing
Multiple or missing audio files
Burai slider
Perfect stacks too close in time with Hard Rock applied
Hit object is unaffected by a line very close to it
Too short spinner
Too short hit sounds
Unsnapped last note hiding barline
Missing spinner
Concurrent or conflicting timing lines
Consecutive basic-snapped hyperdashes
Too high or low background resolution
OD/HP Values too high
Imbalanced hit sounds
Contains hyperdashes
Unused files
Missing custom hitnormal
Too high sprite resolution
Disallowed hyperdash snap
Too high or low audio bitrate
Too dark or bright combo colours or slider borders
Incorrect audio format
Kiai inconsistencies
Inconsistent mapset id, countdown, epilepsy warning, etc
Breaks only achievable through .osu editing
Multiple or missing audio files
Burai slider
Burai slider
Multiple or missing audio files
Breaks only achievable through .osu editing
Inconsistent mapset id, countdown, epilepsy warning, etc
Kiai inconsistencies
Incorrect audio format
Too dark or bright combo colours or slider borders
Too high or low audio bitrate
Disallowed hyperdash snap
Too high sprite resolution
Missing custom hitnormal
Unused files
Contains hyperdashes
Imbalanced hit sounds
OD/HP Values too high
Too high or low background resolution
Consecutive basic-snapped hyperdashes
Concurrent or conflicting timing lines
Missing spinner
Unsnapped last note hiding barline
Too short hit sounds
Too short spinner
Hit object is unaffected by a line very close to it
Perfect stacks too close in time with Hard Rock applied
Burai slider
Multiple or missing audio files
Breaks only achievable through .osu editing
Inconsistent mapset id, countdown, epilepsy warning, etc
Kiai inconsistencies
Incorrect audio format
Too dark or bright combo colours or slider borders
Too high or low audio bitrate
Disallowed hyperdash snap
Too high sprite resolution
Missing custom hitnormal
Unused files
Contains hyperdashes
Imbalanced hit sounds
OD/HP Values too high
Too high or low background resolution
Consecutive basic-snapped hyperdashes
Concurrent or conflicting timing lines
Missing spinner
Unsnapped last note hiding barline
Too short hit sounds
Too short spinner
Hit object is unaffected by a line very close to it
Perfect stacks too close in time with Hard Rock applied
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