MIDI file analyzer

Count the number of notes, tracks and other MIDI file data

Analysis results

Tracks

All notes

Analyze a new file Bug / Feature request
Upload .mid/.midi file
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About

This service

This service allows you to analyze MIDI files.

The project started as a tool to count the number of notes in Black MIDI files, which usually have tens of thousands of notes. Currently, there is a limit to the maximum file size of 8Mb. I can upgrade my code to handle much larger files if there is enough demand. But for now, it looks like enough.

There are also some other statistics. Like MIDI file notes range, time signature, tempo, and track information. Service displays it if possible.

If you have any thoughts you'd like to share, want to see additional features, or have found any bugs, please get in touch with me at streamdevprojects@gmail.com.

Let's Get Started!

API

Programmatic access to MIDI analysis

This API provides the same functionality as the web interface but is easier to use with programming languages.

Maka a requests

To analyze your MIDI file, follow these simple steps:

  1. Send an HTTP POST request to this URL: https://streamdevprojects.com/midi/api/v1/analyze.
  2. Ensure the file is attached using the "multipart/form-data" format (in line with RFC 2388 standards).
  3. Remember to authorize your request by including your API key in the request header as X-API-KEY. If you don’t have an API key yet, you can easily obtain one for free here.
Review the response

The response is returned in JSON format and includes a boolean success element, which indicates whether the request was successful. The analysis results are contained within the midi element. This element is an object that provides general file information, along with a list of tracks and notes.

On the right Below, you’ll find an example of a simple request and response. Use this as a guide for making your own API calls. If you have any questions or feature requests, please feel free to email me.

Get API key

Request sample cURL
curl https://streamdevprojects.com/midi/api/v1/analyze \
-X POST \
-H "Content-Type: multipart/form-data" \
-H "X-API-KEY: <your_api_key>" \
-F file=@<file_path>
Response sample JSON
{
"success": true,
"midi": {
"general": {
"notesCount": 110,
"notesRange": {
"minNum": 41,
"maxNum": 81,
"minTxt": "F3",
"maxTxt": "A6"
},
"timeSign": "4/4",
"bpm": 112
},
"tracks": [
{
"notesCount": 66,
"notesRange": {
"minNum": 55,
"maxNum": 81,
"minTxt": "G4",
"maxTxt": "A6"
},
"notesStats": [
{
"num": 55,
"txt": "G4",
"count": 7
},
{
"num": 57,
"txt": "A4",
"count": 6
},
...
]
},
{
"notesCount": 44,
"notesRange": {
"minNum": 41,
"maxNum": 48,
"minTxt": "F3",
"maxTxt": "C4"
},
"notesStats": [
{
"num": 41,
"txt": "F3",
"count": 4
},
{
"num": 43,
"txt": "G3",
"count": 8
},
...
]
}
],
"notes": [
{
"num": 41,
"txt": "F3",
"count": 4
},
{
"num": 43,
"txt": "G3",
"count": 8
},
...
]
}
}