About

It reads a sheet-music PDF and prints the pitch name (like C♯ or B♭) next to the out-of-range notes that sit on ledger lines above or below the staff — the ones that are slow to sight-read because you have to count lines. It writes those labels into a new PDF while keeping the original sheet music intact.

Yes. After your first visit the tool is saved on your device, so it keeps working with no internet connection. To keep it handy you can add it to your home screen or desktop:

• iPhone / iPad: open it in Safari, tap the Share button, then Add to Home Screen.
• Android: open the browser menu and tap Install app or Add to Home screen.
• Computer: click the install icon in your browser's address bar.

It then opens in its own window like any other app.

1. Open a sheet-music PDF made by notation software — drag it in or pick a file.
2. Choose how far past the staff a note must sit before it gets a label, and set the label style, color, and position.
3. The tool reads the PDF's own staff lines and notes directly — it doesn't scan the page as an image or guess — to work out each out-of-range note's exact pitch.
4. Preview the labeled pages and download a new PDF with the pitch names added, matching the original sheet music.

• Piano students and adult learners who lose time counting ledger lines.
• Sight-reading practice — label the notes above and below the staff so you can keep reading at tempo.
• Teachers preparing scores for students.
• Anyone working from IMSLP downloads or MuseScore, Finale, and Sibelius PDF exports.

No. Everything runs in your browser. Your PDF is read into memory, labeled, and offered back as a download — it is never sent over the network and never leaves your device. (The site uses a cookieless, privacy-friendly visit counter that counts page views only; it never sees your files. See the privacy page.)

PDFs created by notation software such as MuseScore, Finale, or Sibelius, and many scores on IMSLP. The tool reads the PDF's own staff lines and notes, so the result is near-exact. Scans and photos won't work — there's nothing in them for it to read.

The notes beyond your chosen ledger-line boundary — the out-of-range notes above or below the staff that take the longest to read. You set the boundary per clef (for example, label everything above C6 in the treble and below C2 in the bass).

Yes. Treble and bass staves are detected separately and each gets its own ledger-line boundary, so labels are correct for both hands.

It is completely free with no account and nothing to install.

No. It reads the notes stored inside the PDF rather than recognizing an image, so a scan or photo has nothing for it to read. Use a PDF created by notation software.