Audio tools

Audio conversion powered by FFmpeg — the engine behind practically every media app — compiled to WebAssembly and running inside your browser. Recordings, voice notes and music never leave your device.

Voice RecorderPress record, watch the level meter, download an MP3 MP3 Cutter & Ringtone MakerPlay the track, mark the part you love, cut it with smooth fades Audio JoinerSeveral recordings into one continuous track Audio Speed ChangerLectures at 2×, transcription at 0 Volume BoosterThat too-quiet voice memo, fixed Audio ConverterMP3, WAV, M4A, FLAC and OGG in any direction

Batch whole folders and download the results as a ZIP.

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
No limits. No file-size cap, no queue, no watermark, no account.
Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

Need icons or SVGs to start from?

InfyTool is built by the same team as these free libraries.

InfyIconFree SVG and PNG icons you can open directly in these tools. InfySVGFree SVG designs and illustrations, ready to optimise or convert. InfyPNGFree transparent PNG graphics for mockups and social posts.