Audio → Base64
Audio を Base64 にエンコードします。CSS にインライン化したり、JSON 設定や API テストに直接貼り付けたりするのに向いています。
Output produces a data URL with the matching MIME.
For pure-text payloads use the Text to Base64 tool, or recover an inline asset with Base64 to Image.
Encode any audio file — MP3, WAV, OGG, M4A, FLAC, Opus — into Base64. The detected MIME type is preserved in the data URL prefix when enabled, so playback works without manual fixing.
Encoding does not change quality. Compress the source first if the resulting payload is too large for your transport; for example, exporting at a lower bitrate before pasting here.
Any audio file your browser exposes through the file input — MP3, WAV, OGG, M4A, FLAC, Opus, and others.
No. The original bytes pass through unchanged, so quality is preserved.
The browser-detected MIME for the chosen file (e.g. audio/wav, audio/ogg, audio/mp4).
No. Encoding runs locally in your tab.