Free online GP4 to FLAC converter

Source format

GP4 is a Guitar Pro 4 song file format used to store guitar tablature, standard notation, lyrics, tempo, instrument settings, and playback data. It is commonly used by guitarists, bassists, drummers, teachers, and arrangers who work with Guitar Pro or compatible tablature software. GP4 files are not audio files; they are editable music scores that can be played back through notation software or exported to other formats.

Target format

FLAC stands for Free Lossless Audio Codec. It is an audio format that compresses sound without losing quality, making it ideal for archiving, high-fidelity playback, and music libraries. FLAC is widely supported by desktop players, media servers, and many portable devices. Compared with MP3 or AAC, it preserves the original audio data while usually producing smaller files than uncompressed WAV.

How to perform the conversion

Because GP4 is notation data and FLAC is audio, the conversion is not direct. You must first open the GP4 file in software that can read Guitar Pro 4 scores, then export or render the score to audio, and finally save that audio as FLAC.

1. Open the .gp4 file in Guitar Pro or another compatible tablature editor.
2. Check the instruments, tuning, tempo, and playback sounds so the rendered audio matches what you want.
3. Use the program’s export or audio rendering function, such as File → Export → Audio or File → Export → WAV, depending on the software.
4. If the program can export directly to FLAC, choose .flac as the output format and save the file.
5. If the program exports only WAV or another uncompressed audio format, convert that audio to FLAC with a desktop audio tool such as FFmpeg or Audacity.

Example with FFmpeg after exporting a WAV file:

ffmpeg -i input.wav output.flac

If you want a quick browser-based option, you can convert the file on 101convert.com for free without installing any software, provided the site supports the needed GP4-to-audio workflow.

Notes on quality and limitations

GP4 does not contain recorded sound, so the resulting FLAC will be a rendered playback of the score, not an original studio recording. The audio quality depends on the instrument samples, soundfont, synthesizer, and export settings used by the source software. If the GP4 file uses MIDI-style playback, the output may sound different from how it would in a real performance.

For best results, export at the highest available quality, use a lossless intermediate format if needed, and verify that the tempo map, repeats, bends, and effects are interpreted correctly. Some older GP4 files may not render perfectly in newer software, so compatibility can vary.