Playlist Analyzer
Batch-analyze a set of tracks for estimated BPM, musical key, duration, and peak level — sort and export results. Everything runs in your browser.
Drop several files here or browse
MP3, WAV, FLAC, M4A, OGG — multi-select · analyzed locally
| File | Duration | BPM | Key | Peak | Conf. |
|---|
What it does
Playlist Analyzer is a batch audio analysis tool for quickly checking a collection of tracks in one place. Instead of opening every song separately, you can select multiple audio files and analyze them as a playlist. For each track, the browser estimates BPM, musical key, duration, and peak level, then presents the results in an easy-to-scan table.
You can add tracks directly from your computer or choose audio files that are already available in your My Library. This makes it useful when you are building a collection over time and want to analyze previously added tracks without downloading them again.
During analysis, files are processed one by one and the progress indicator shows which track is currently being analyzed. Results are added to the table as processing continues, so you can see the playlist taking shape instead of waiting for the entire batch to finish.
Once the analysis is complete, you can sort the playlist by BPM to find slower or faster tracks, compare keys and peak levels, and review the duration of every file. The table can then be exported as a CSV file for use in Excel, Google Sheets, DJ preparation, music cataloging, or your own production workflow.
Playlist Analyzer is especially useful for DJs, producers, musicians, and anyone managing a large music collection. For example, you can quickly find tracks around a certain tempo, group songs with compatible keys, identify unusually loud or quiet files, or create a simple spreadsheet of your music library before a recording session or performance.
Everything is processed locally in your browser. Your audio does not need to be uploaded to a remote analysis server just to calculate these values. This also means that the available processing speed depends on your device, browser, file format, and the number and length of tracks in the playlist.
Numbers are estimates from the same local DSP used on the BPM and Key detectors. They are designed to make a large collection easier to organize and inspect, rather than replace careful listening or specialized metering when precise results are required.
How to use it
Select many files
Multi-select MP3, WAV, FLAC, M4A, or other formats the browser can decode. Large sets use more RAM — a few dozen moderate tracks is typical.
Analyze playlist
Click Analyze. Each file is decoded and measured in sequence; progress shows while the table fills.
Sort & export
Sort by BPM, review keys and peaks, then export CSV for spreadsheets or set planning.
Questions about Playlist Analyzer
01What is Playlist Analyzer?+
It batch-analyzes multiple audio files in your browser and reports estimated BPM, key, duration, and peak level for each track in a table you can sort and export.
02How many files can I analyze?+
There is no hard server limit. Practical limits are browser memory and CPU. A few dozen moderate-length tracks usually work; hundreds of long lossless files may be slow or run out of RAM.
03Are results as good as dedicated DJ tools?+
They use the same class of local estimators as our single-file BPM and Key tools — solid drafts for organizing a set, not lab-grade metering or commercial DJ software analysis.
04Does order matter?+
Analysis is per file. The table order follows your selection unless you sort (for example by BPM).
05Is anything uploaded?+
No. Decoding and analysis stay on your device. Exporting CSV only saves a text file locally.
06Why is some BPM or key missing?+
Very quiet, noisy, or non-musical clips can fail detection. Re-run after removing problem files, or analyze those tracks alone on the single-file detectors.