{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-06-02T15:45:19.697Z","discovery":{"catalog":"https://toptool.io/tools.json","llmsTxt":"https://toptool.io/llms.txt","sitemap":"https://toptool.io/sitemap.xml"},"relatedTools":[{"slug":"mp3-to-wav","name":"MP3 to WAV","url":"https://toptool.io/mp3-to-wav"},{"slug":"audio-trimmer","name":"Audio Trimmer","url":"https://toptool.io/audio-trimmer"},{"slug":"ogg-to-mp3","name":"OGG to MP3","url":"https://toptool.io/ogg-to-mp3"},{"slug":"wav-to-flac","name":"WAV to FLAC","url":"https://toptool.io/wav-to-flac"},{"slug":"wav-to-ogg","name":"WAV to OGG","url":"https://toptool.io/wav-to-ogg"},{"slug":"mp3-to-aac","name":"MP3 to AAC","url":"https://toptool.io/mp3-to-aac"},{"slug":"mp3-to-opus","name":"MP3 to Opus","url":"https://toptool.io/mp3-to-opus"},{"slug":"flac-to-mp3","name":"FLAC to MP3","url":"https://toptool.io/flac-to-mp3"}],"kind":"converter","slug":"wav-to-mp3","name":"WAV to MP3","description":"Convert WAV audio to MP3 with selectable VBR quality — free online, no upload.","longDescription":"Encode a WAV file as a variable-bitrate MP3 using LAME. VBR generally produces smaller files at the same perceived quality compared to fixed-bitrate encoding. The conversion runs entirely in your browser via ffmpeg.wasm — your audio never touches a server. Expect a few seconds for a typical 5-minute song; longer or higher-quality settings may take a minute or two.","category":"audio","categoryName":"Audio","keywords":["wav to mp3","convert wav to mp3","wav to mp3 converter","wav to mp3 online","wav to mp3 free","wav to mp3 online free","change wav to mp3","wav mp3 converter","free wav to mp3","online wav to mp3 converter"],"url":"https://toptool.io/wav-to-mp3","runsOn":"client","multiple":false,"batch":false,"input":{"type":"file","extensions":[".wav"],"mimeTypes":["audio/wav","audio/wave","audio/x-wav"]},"output":{"type":"file","extension":".mp3","mimeType":"audio/mpeg"},"options":[{"type":"select","key":"quality","label":"MP3 quality","defaultValue":"2","choices":[{"value":"0","label":"VBR best (~245 kbps)"},{"value":"2","label":"VBR high (~190 kbps)"},{"value":"4","label":"VBR medium (~165 kbps)"},{"value":"6","label":"VBR low (~115 kbps)"},{"value":"9","label":"VBR lowest (~65 kbps)"}],"help":"Lower numbers = better quality and larger files."}],"invocation":{"webUi":"https://toptool.io/wav-to-mp3","api":null,"notes":"Currently runs client-side in the user's browser. Drop a file on the UI at `webUi` and download the converted result. A remote MCP/REST API is planned."}}