ScoreTransposerMusicXML-first score workspace
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OSMD preview plus structured correction

Online score editor and correction

Correct imported scores through property panels for notes, rests, key/time signatures, lyrics, chord symbols, dynamics, wedges, articulations, and barlines.

Beta

Editing is built on Score JSON/MusicXML, not on PDF text or image pixels.

Open score projectsPricing

Platform modules

Built on MusicXML and Score JSON

Each feature page maps back to the same score project model rather than a separate one-off converter.

Module

OSMD preview

Connected to the score project workflow.

Module

Score JSON revisions

Connected to the score project workflow.

Module

Correction panel

Connected to the score project workflow.

Module

Version restore

Connected to the score project workflow.

Real product example

One score, structured input and reusable output

Captured from the running score workspace after importing test MusicXML. Captured 2026-07-15.

Visual score editor with rendered notation, revision controls and correction tools

Input

Selected event: E4 quarter note in measure 2Download input case

Output

Corrected event: F-sharp4 eighth note in a new revisionDownload output case

Selection, insertion, deletion, drag editing and structured properties operate on Score JSON.

Workflow

How this path works

The public page leads into the authenticated app workflow when users are ready to process a score.

01

Import a structured score

Start from MusicXML, MIDI, Jianpu, Score JSON, or an OMR candidate promoted into an editable revision.

02

Select a correction target

Edit note/rest properties, measure attributes, harmony, tempo, dynamics, wedges, articulations, ties, slurs, lyrics, and barlines.

03

Save a new revision

Corrections are stored as new Score JSON revisions so history can be restored without losing earlier versions.

Product detail

What to expect

Designed for OMR cleanup

Scanning is rarely perfect; this editor exists to repair recognition mistakes before playback, conversion, or export.

Interactive correction, with deeper engraving still in progress

The app supports rendered-note selection, pitch and duration dragging, insertion, deletion, and structured property editing. Desktop-grade free-form engraving and full layout control remain in progress.

FAQ

Questions about Online score editor and correction

Practical limits and expected workflow for this score tool.

What input does Online score editor and correction accept?

Start from MusicXML, MIDI, Jianpu, Score JSON, or an OMR candidate promoted into an editable revision.

Can I edit the result after conversion?

Yes. Successful imports become Score JSON revisions that can be corrected, transposed, played, and exported from the score workspace.

What should I check before relying on the result?

Editing is built on Score JSON/MusicXML, not on PDF text or image pixels.

Related workflows

Continue with the same score project

These pages use the same MusicXML and Score JSON source instead of sending the score through disconnected converters.

PDF score scanner and OMR

Upload PDFs or score images as OMR sources, queue Audiveris recognition, convert MusicXML into Score JSON, and review diagnostics before correction.

Transpose sheet music online

Create new score revisions by semitone count, target key, or common transposing-instrument profile, with optional range diagnostics after transposition.

MusicXML converter and MIDI score tools

Use MusicXML as the interchange format and Score JSON as the editable project model, with MIDI import/export and portable Score JSON snapshots.