Miditor offers a comprehensive suite of free online MIDI tools designed for musicians and producers. This local-first MIDI workstation allows users to play, edit, and convert MIDI files directly within their browser without the need for uploads or sign-ups.

• MIDI Player: Listen to standard .mid and .midi files, visualize the arrangement with a piano roll, and control playback with options to start, stop, seek, loop, and change tempo. It also includes a practice simulator to play along with falling notes and a virtual keyboard.
• MIDI Editor: Modify MIDI notes and tracks using a piano roll and arrangement timeline. Features include drawing, resizing, transposing, quantizing notes, organizing tracks, and adjusting tempo maps.
• MIDI to Sheet Music Converter: Preview and export selected MIDI tracks as readable musical notation, with options for rhythm quantization and printing the score.
• MIDI Converter: Render MIDI arrangements into audio files, with options to export as MP3 for sharing or WAV for uncompressed audio editing and archiving.
• AI MIDI Tools (Upcoming): Future features will include assisted composition and notation tools, building on the existing local-first workflow.

Miditor emphasizes a zero-transfer workflow, ensuring that all file processing occurs on the user's device, enhancing privacy and speed. The tools are practical for quick checks, studying arrangements, correcting notes, or rendering audio without installing desktop software. It supports modern browsers across desktop and mobile devices.