Use a desktop or notebook computer Audio Analyzer is designed for a desktop or notebook computer. File selection, detailed graphs, and result comparison need more screen space. You can continue on mobile, but the controls and results may be difficult to review.
Analyze · Adjust · Save Audio

Audio Analyzer

Use an audio file to check loudness, sample peak, and estimated true peak. You can also adjust loudness and peak safety, compare the result with the original, and save a new WAV, FLAC, or MP3 file. The work runs locally in your browser.

Your file is analyzed and adjusted locally in your browser. This page does not need to upload your audio to the server.

Choose audio file

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Choose a file to start analysis. Purpose can be changed anytime.

Analysis purpose

PRIVATE AUDIO WORKSPACE

Keep reports, analysis records, and output presets

Google sign-in is optional. Audio files and original file names are never saved to your account.

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Only report ownership data, analysis values, reduced graph points, and settings can be stored. Original audio, adjusted audio, decoded samples, and local file names stay on this device.

Excellent Good Caution Warning This score checks the technical condition of this audio file. It does not rate the song itself. The loudness value is only an estimate. Duration The reference range for this purpose is – LUFS. The highest peak is safely below the maximum digital level. The highest peak is close to the maximum digital level. The file has only a small safety margin before the top level. This result alone does not mean that the audio is clipped. The estimated peak between samples has enough safety margin. The estimated peak between samples is close to 0 dBTP, or it is above 0 dBTP. The file has only a small safety margin. If you create an MP3 file or an AAC file, use a lower peak limit to reduce peak overs. This is the average signal energy. The level difference is small. This is still okay for this use. The level difference is moderate. This is a good range. The level difference is large. This is still okay for this use. The level difference is too small. The sound may feel too even or compressed. The level difference is too large. Quiet parts or loud parts may need level adjustment. The balance is centered. The balance is slightly shifted. No peak events were detected at the maximum level. Some peak events were found. Look at the pattern before you decide that this is hard clipping. This file is mono. Stereo balance is not available. Stereo balance looks centered. The left side is louder by about dB. The right side is louder by about dB. Overall, this file looks stable for the selected purpose. The main level, peak readings, and stereo balance look healthy. This file appears usable with no major warning signs. This file is usable, but a few items need attention. This file can be used in many cases, but one or two items need attention. The result is acceptable. Read the items below before final use. Listen to this file again before upload or release. Some readings need attention before final use. The file may need level, peak, or balance adjustment. The overall loudness is within a reasonable range for the selected purpose. The overall loudness is low for the selected purpose. The overall loudness is high for the selected purpose. The peak readings look safe. The risk from peak events appears low. The peak level is close to the digital maximum level. This can happen in a finished master. This result alone does not mean that the audio is clipped. The estimated peak between samples is above 0 dBTP. This is not the same as hard clipping. It means that the file has very little safety margin. This is a lossy audio file. Some peaks are above the safety guide or very close to it. This can happen when an MP3 file or an AAC file is created. This result does not prove that the original WAV file was clipped. A few isolated maximum-level peaks were found. This result does not prove audible clipping. Compare this file with the source file if possible. Maximum-level peaks appear repeatedly. Check the final limiter level and the original file before final use. This file shows a pattern that can look like hard clipping. Several samples stay near the maximum level. The level difference is acceptable for the selected purpose. The level difference is small, but it is still acceptable for the selected purpose. The level difference is moderate. This is a good range for the selected purpose. The level difference is large, but it is still acceptable for the selected purpose. The level difference is small. The sound may feel too even or compressed. The level difference is large. Some parts may feel too quiet or too loud. This file was analyzed as a mono file. The stereo balance looks stable. The stereo balance is slightly shifted to the left. The stereo balance is slightly shifted to the right. The stereo balance is noticeably shifted to the left. The stereo balance is noticeably shifted to the right. Another item also needs attention. There are also some positive signs. The cards below show the other items. This file has enough peak headroom. Do not add more compression first. Raise the overall level carefully. Keep the final true peak near the safety guide. This file has useful peak headroom. You can raise the overall level if you need a louder file. Keep the final true peak near the safety guide. This file has many peak events and a wide level difference. Some peaks are already close to the maximum level. If you raise the whole file first, the distorted parts may become more obvious. Repair clipped peaks first if possible. The stereo balance is not even. Check the left and right levels before mastering. The level difference is wide. Reduce large level jumps with gentle level control. Use the final limiter after these steps. For online video, listen to the final result before upload. Try a phone, laptop speakers, and headphones. For music streaming, do not chase numbers only. Make sure the song still keeps its punch, space, and low-end feel. For voice content, listen for long-listening comfort. The voice should stay clear and steady. For live or rehearsal recordings, keep the performance energy clear. Avoid hard clipping and excessive compression before trying to make everything louder. For short social videos, the first few seconds matter. Make sure the audio does not start too quietly on mobile speakers. In Raw Check mode, focus on the current file condition. Check Sample Peak, Peak Events, Stereo Balance, and Level Difference. Loudness Peak Peak Pattern True Peak Codec Overs Peak Events Dynamic Range Level Difference Stereo Stereo Balance The loudness is near the reference range for the selected purpose. The file may play quietly for the selected purpose. Raise the level carefully and keep enough safety margin for peaks. Playback platforms may reduce the level. The sound may already feel strongly compressed. There is useful safety margin left for peaks. This is safer when you create another audio file or upload this file. The highest peak is close to the digital maximum level. This is not clipping by itself. Use the true peak safety guide before upload, encoding, or further processing. This file is above the true peak safety guide after decoding. It may have little safety margin for upload, encoding, or further processing. This lossy audio file looks more like codec overs than clear hard clipping. Compare it with the original WAV file if possible. The peak events are isolated. Listen carefully before you call them clipping. Peak events are repeated. Check the final limiter level. This pattern can sound harsh or distorted. Check the mix bus, the limiter, and the source file. The level difference is acceptable for this use. The level difference is small. This is still usable for this use. The level difference is moderate. This is a good range. The level difference is large. This is still usable for this use. The level difference is too small. Punch and space may feel reduced. The level difference is too large. Some parts may feel too quiet or too loud. This file is mono. Stereo balance is not available. It is unlikely to feel strongly pulled to one side. If this is not intentional panning, look at the master output or recording channels. Look at the L/R level difference. It may come from the recording source, interface, or master output. Ready.
Choose a file to start analysis. Purpose can be changed anytime. Reading file...
Decoding this local audio file. Analyzing...
Analyzing loudness, peak level, and peak-event patterns. The tool also looks at dynamics and stereo balance. Analysis complete.
The quick summary, waveform, loudness graph, and suggestions are ready below. Previous analysis restored.
This result will remain in this browser tab until you choose another audio file or close the tab. Could not analyze this file.
Please try a standard WAV, MP3, M4A, AAC or OGG file supported by your browser. Choose the audio output goal before processing. YouTube / Online Video starts at -15.0 LUFS and -1.0 dBTP. Music Streaming starts at -14.0 LUFS and -1.0 dBTP. Podcast / Voice starts at -16.0 LUFS and -1.0 dBTP. Live / Rehearsal starts at -17.0 LUFS and -1.0 dBTP. Social Short Video starts at -13.5 LUFS and -1.0 dBTP. LOUD MASTER starts at -10.0 LUFS and -1.0 dBTP. It creates a loud and dense master while keeping some punch. EXTREME MASTER starts at -7.0 LUFS and -1.0 dBTP. It allows much stronger control for an extremely dense master. Preparing the original audio... Every new version starts from the unchanged original audio. Correcting the whole-track L/R level balance... The left and right levels are being redistributed while the combined level is preserved. Controlling section changes... Louder sections are being controlled with the selected processing approach. Controlling transient peaks... Short peaks are being controlled before the loudness step. Matching the loudness goal... The gain is being calculated from a new loudness measurement. Applying the true peak safety limit... Peak safety has priority when the two goals conflict. Checking the result... The adjusted audio is being measured again before it is shown. The adjusted version is ready. Compare it with the original before you save the new audio file. The source contains a strong peak-event pattern. This tool keeps the peak safer, but it cannot repair clipping that is already in the recording. The loudness goal would need more peak reduction. The tool stopped lower because true peak safety has priority. The measured loudness is close to the selected goal. Listen before you save it. The result is close to the loudness goal and stays within the true peak limit. The selected output goal needs more processing than this approach allows. Listen and try another approach if needed. This version has not been saved yet. Change a preset or setting. Processing will start again from the original audio. Processing stopped. The original audio is unchanged. This analysis was restored without the audio file. Choose the audio file again before you adjust or save a new audio file.

Free Audio File Analyzer and Loudness Meter

This audio file analyzer checks audio files directly in your browser. It shows integrated loudness, sample peak, estimated true peak, average level, the level difference, peak events, stereo balance, a waveform overview, and loudness over time. On a desktop or notebook computer, it can also create an adjusted WAV, FLAC, or MP3 copy. The original file is never changed.

Purpose-based suggestions

Choose a purpose before analysis. You can choose YouTube, music streaming, podcast, live recording, social short video, or raw check. The same audio numbers can mean different things depending on the destination. The suggestion text changes to match the selected purpose.

What does this audio analyzer check?

It checks integrated loudness, sample peak, estimated true peak, average level, peak-event patterns, the level difference, stereo balance, waveform shape, and loudness over time. These checks are useful before you upload a mix, export a podcast, review a live recording, or compare a reference file.

Is my audio file uploaded?

No. The file is decoded, analyzed, and adjusted in your browser. SolAudioLab does not receive or store your audio file. The new audio file is created only on your device when you choose to save it.

Can it adjust LUFS and True Peak?

Yes. After analysis, choose ADJUST & SAVE AUDIO on a desktop or notebook computer. You can use a simple preset or choose a loudness goal, a true peak limit, dynamic movement, and the output format. You can save 24-bit or 16-bit WAV, lossless FLAC, or MP3 at 320 or 192 kbps. The true peak limit has priority when the loudness goal and peak safety cannot both be reached.

Is this a replacement for professional mastering?

No. This is a simple level and dynamics tool for practical files. It does not repair clipped recordings, remove noise, correct tone, or replace critical listening with a mastering engineer and trusted meters.

Can I use it as an online LUFS meter?

Yes, you can use it for a browser-based loudness check. The integrated loudness uses a BS.1770-style gated calculation. For final mastering decisions, you should still compare the result with your trusted DAW or dedicated metering tools.

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