Opus audio
A modern open codec optimized for speech and music at low bitrates.
Best for voice, streaming, conferencing, and web audio.
OPUS to FLAC
Convert OPUS files to FLAC online, set one output for the whole batch, and download each result directly.
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How to convert OPUS to FLAC
The converter works through your browser and an isolated processing queue, with one batch output that you can override for individual files.
- 1Add your filesDrop up to 25 OPUS files into the converter or choose them from your device.
- 2Choose the resultSet every compatible file to FLAC at once, then adjust individual rows if needed.
- 3Convert and downloadStart the batch and download finished files directly before guest files are removed after 1 hour.
FLAC audio
A lossless compressed audio format that preserves the original samples.
Best for music archives and high-quality listening.
Browse by file type
Each category has its own converter, format list, and common routes.
Images
JPG, PNG, WebP, AVIF, GIF, TIFF, BMP, HEIC, ICO, SVG
Documents
DOC, DOCX, ODT, RTF, TXT, HTML, PDF
Spreadsheets
XLS, XLSX, ODS, CSV, PDF
Presentations
PPT, PPTX, ODP, PDF
PDF, DOCX, JPG, PNG, TXT
Audio
MP3, WAV, AAC, FLAC, OGG, M4A, Opus
Video
MP4, WebM, MOV, AVI, MKV, GIF, MP3
Archives
ZIP, TAR, TAR.GZ, 7Z
Ebooks
EPUB, MOBI, AZW3, PDF, TXT
Keep the useful ones.
Conversions remain temporary even when you are signed in, so save a result to your workspace when you want a stable URL and revision history.
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