Lo-fi converter for a recording you already have

Choose the audio file that contains the performance or mix you want to reshape. MP3, WAV, M4A, and OGG files can be selected, but the extension alone does not tell you whether a particular browser can decode the audio inside. If a file will not open, try another copy of the same recording in a commonly supported encoding. This is especially useful when the file came from an older device, a messaging app, or an editing program that can save in several formats.

The selected recording can be up to 50 MiB and 10 minutes long. Those limits describe the input; a file within them can still require more memory than the browser has available during export. For a long arrangement, prepare a shorter excerpt that contains the section you need to process. A verse, chorus, or transition can answer a practical sound question without making the browser work through the entire track. Keep your full recording available in your usual audio workspace if you will later assemble the treated passage into a larger edit.

Vintage texture changes the frequency balance and character of the recording. As the low-pass cutoff moves from about 18 kHz toward 3 kHz, more of the high-frequency detail is reduced; soft saturation adds density, and a short reverb adds ambience. Together, these are tone treatments for creating a darker, less pristine presentation. They do not repair damaged audio or restore information that is missing from the source.

The right balance depends on what carries the identity of the material. In a vocal recording, crisp consonants may be more important than a very dark top end; in a beat, a bright hat or shaker may define the groove. A room recording may already contain enough ambience, while a dry sample may benefit from a little more sense of space. Judge the texture against those source details, and choose a result that still communicates the part of the performance listeners need to recognize.

The warm preset starts at 0.94x speed, 55% texture, and 25% noise. It is a middle-ground combination for a song where a slight slowdown and audible tone change should coexist without making noise the main feature. The soft preset uses 0.90x speed, 75% texture, and 15% noise, putting more emphasis on a slower, stronger tonal shift with less added noise. Those values make the two presets meaningfully different starting points, rather than labels for the same treatment.

The vinyl preset uses 0.96x speed, 65% texture, and 55% noise, so its noise level is higher while its speed change is more restrained than the other two. That combination may be a useful place to begin with a clean, steady keyboard part where surface texture is welcome. For a lyric-focused passage, the soft preset's lower noise level may be a more appropriate reference. The values describe the preset settings, not a guaranteed result; the source recording determines how each combination comes across.

MP3 exports use 192 kbps, which makes them a practical choice when a compact file is the priority. WAV exports use 16-bit PCM at 44.1 kHz, a useful option when an uncompressed file is needed for another editing step. Choosing WAV does not recover detail that was already discarded from a compressed source; it specifies the exported format. Check what your playback, delivery, or editing destination accepts before deciding which file to make.

The download is a new file with a -lofi suffix, and the local source is not overwritten. That gives you a source and a treated output to keep side by side. If you make several versions for a project, rename or organize the downloaded files in your normal file system so each one is easy to identify. The suffix marks the generated output; it does not create an editable project or preserve a history of adjustments inside the tool.