1Upload the audio files whose level you want to change.
2Move the volume slider: above 100% makes the file louder, below 100% makes it quieter.
3Run it; the whole file is raised or lowered by the same amount, so a large boost can make loud passages clip.
4Download the adjusted Audio file.
Adjust Audio Volume FAQ
Does the source format matter?
+
It does. this format is read and written by the same streaming pipeline as everything else we support. That decides whether a gain change is an exact edit of the samples or has to go through a re-encode.
Anything specific to Audio to know?
+
Yes — the codec is detected from the stream, so a mislabelled extension does not derail the job. Relevant if you plan to adjust the level more than once.
Should I use volume or normalisation?
+
Use volume when you know exactly how much louder or quieter you want it. Use normalisation when you want a set of files to end up at the same perceived loudness — that is a measurement problem, not a fixed gain, and applying one when you meant the other is the usual mistake.
Can I adjust a whole batch to the same gain?
+
Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
Can I run Adjust Audio Volume on several audio files at once?
+
Yes. The set queues in parallel with identical settings, which is how you process an album or a podcast back catalogue without repeating yourself.
Does Adjust Audio Volume cost anything?
+
No. Adjust Audio Volume is free without an account, and nothing is added to the audio. The upload and the result are deleted automatically about 24 hours after the job, which leaves time to download the result.
Is there a file size limit on Adjust Audio Volume?
+
Yes: free accounts process audio up to 15 MB per file whichever codec you brought; ffmpeg handles the decode and encode. In practice that limit only bites on uncompressed WAV; a compressed file of the same length is nowhere near it.
Why does a PNG site host Adjust Audio Volume?
+
PNG.to is built around the format you use when you cannot afford to lose a pixel: lossless, alpha-capable, and the correct answer for screenshots, logos, line art and anything with hard edges. Image work is rarely one step: people arrive to change a format and leave needing the picture a different size, a different weight or a different shape. Running Adjust Audio Volume on the same upload pipeline, the same size caps and the same account is the whole reason it is here rather than on a fourth tab.
What should I do with the result once Adjust Audio Volume is finished?
+
The converter on this site moves images to and from PNG, JPG, WebP, GIF and SVG — which is the step where the decision about transparency actually gets made. That is the step most people actually came for, and doing it after Adjust Audio Volume rather than before it means the conversion works from the file you finally settled on.
Is Adjust Audio Volume here the same tool the sibling sites run?
+
The engines are shared — the same libraries, the same workers, the same limits. What differs is the advice, and the advice here starts from one fact about the format this site is named after: there is no quality slider to get wrong — a PNG round-trips bit-exactly, so the only thing edits cost you is file size. A PNG site is opinionated about where PNG is the right destination and where it is not, and that judgement is worth more than the button.
Do I need an account, and does anything get kept?
+
No account is needed. Uploads and results are kept for about 24 hours, which leaves time to download the result, and are then deleted automatically; nobody reads, lists or indexes them. Several files in one job need a paid plan.
