DropConvert

HOW IT WORKS

Your device does the work.

DropConvert is a web application, not an upload service. The conversion code downloads to your browser; your file does not travel back to us.

Three steps

  1. DropYour browser opens the file directly from your device.
  2. ConvertNative browser codecs and focused WebAssembly libraries process it locally.
  3. DownloadThe new file is created in browser memory and downloaded by you.

Media quality

For MOV to MP4, compatible H.264 video and AAC audio are remuxed: their compressed streams are copied into an MP4 container with no quality loss. If a supported stream is incompatible, the browser transcodes it. Audio-to-MP3 tools encode at 192 kbps. GIF is intentionally limited to short clips because GIF files are large and computationally expensive.

Browser support and limits

Codec availability differs by operating system and browser. We check the actual file and available codec before converting. Unsupported files get a clear error. Size and duration limits protect mobile devices from running out of memory. Nothing is quietly sent to a server as a fallback.

Technology you can verify

Media container handling uses Mediabunny. MP3 encoding uses its LAME extension. HEIC decoding uses libheif. Image export uses the browser Canvas API, and structured data uses Papa Parse and YAML. Processing stays on the page.