WAV to MP3 API

About WAV to MP3 API

WAV to MP3 API is a hosted service from ApyHub that converts WAV audio files into MP3 format. It accepts input either as a direct multipart file upload or as a publicly accessible URL, and returns the result either as a streamed binary download or as a signed link to the converted file, giving four endpoint combinations in total. Uploaded files are limited to 100 MB.

The API is intended for standardizing audio assets for playback, storage, or downstream processing, such as converting uploaded recordings before saving them in a media pipeline, or fetching a WAV file from object storage and returning an MP3 for delivery to another system. Requests are authenticated with an apy-token header, and the multipart route is suited to cases where the source file is already part of the request, while the URL-based route is suited to cases where the WAV file is hosted elsewhere and reachable over HTTPS.

The listed version is v1.0.0, with four POST endpoints, published and verified by ApyHub.

Key features

• Convert WAV audio files to MP3 via direct multipart file upload
• Convert WAV to MP3 by fetching a source file from a publicly accessible URL
• Return converted MP3 as a streamed binary download
• Return converted MP3 as a signed link (data URI) for asynchronous handoff
• Supports uploads up to 100 MB

Frequently asked questions