Lossless baseline for further work.
ALAC preserves every detail of the source OPUS, which prevents additional quality loss during subsequent edits or re-encoding. The original OPUS compression cannot be undone, but no new artifacts will be introduced.
MENGAPA MENGONVERSI
01
ALAC preserves every detail of the source OPUS, which prevents additional quality loss during subsequent edits or re-encoding. The original OPUS compression cannot be undone, but no new artifacts will be introduced.
02
ALAC is accepted by a wider range of audio players, car stereos, and streaming services than OPUS. The conversion removes a recurring compatibility friction without changing what the file actually contains.
03
ALAC files are typically smaller than their OPUS counterparts, which reduces hosting, transfer, and storage costs at scale. The savings compound when serving the same content to many recipients.
Kunjungi halaman ini di peramban modern mana pun — tanpa instalasi, tanpa pendaftaran, tanpa plugin.
Seret file OPUS Anda ke area pelepasan, atau klik untuk memilihnya dari perangkat Anda.
Konversi berjalan sepenuhnya di peramban Anda. Setelah selesai, file ALAC Anda diunduh ke perangkat Anda.
KUALITAS & FIDELITAS
SPESIFIKASI FORMAT
| OPUS | ALAC | |
|---|---|---|
| Ekstensi | .opus | .m4a .caf |
| Tipe MIME | audio/opus | audio/alac |
| Diperkenalkan | 2012 | 2004 |
| Pemelihara | IETF | Apple |
| Magic number | — | — |
| Spesifikasi | Lihat spesifikasi ↗ | Lihat spesifikasi ↗ |
KOMPATIBILITAS
| Platform | Windows | macOS | iOS | Android | Chrome | Firefox | Safari | Edge |
|---|---|---|---|---|---|---|---|---|
| OPUS | Aplikasi | Aplikasi | Bawaan | Bawaan | Bawaan | Bawaan | Bawaan | Bawaan |
Mengapa LocalConvert
| Category | LocalConvert | Konverter cloud |
|---|---|---|
| PRIVASI | Files never leave your device. The whole pipeline runs in your browser via WebAssembly. | Files travel to a remote server, sit in queue storage, and may be retained for analytics or moderation. |
| BIAYA | Free, no signup, no daily quotas. | Often free for small files; paid tiers for batch / large / commercial use. |
| BATASAN | Limited only by your device's memory and CPU. Uncompressed WAV stems handled comfortably on desktop. | Typical 100 MB to 1 GB per-file caps, plus rate limits. |
A modern low-latency lossy codec excellent for speech and music across all bitrates.
Typical uses
VoIP, podcasts, real-time streaming.
Apple's lossless audio format inside an M4A container.
Typical uses
Apple Music lossless, iTunes lossless libraries.
Ya. LocalConvert sepenuhnya gratis, tanpa pendaftaran dan tanpa batas per file atau per hari.
Tidak. Konversi OPUS ke ALAC terjadi sepenuhnya di dalam peramban Anda menggunakan WebAssembly — file Anda tidak pernah meninggalkan perangkat Anda.
Tidak ada batas tetap — batas praktisnya adalah memori yang tersedia di perangkat Anda. File yang sangat besar mungkin memerlukan waktu lebih lama atau gagal pada perangkat dengan RAM rendah.
Ya — setelah halaman dimuat, konversi OPUS ke ALAC berfungsi tanpa koneksi internet. Buka ulang halaman sekali untuk menyimpannya dalam cache.
LocalConvert menggunakan alat standar industri (FFmpeg, ImageMagick, Pandoc) — kualitas sesuai dengan yang digunakan profesional di baris perintah. Format lossy (dengan kehilangan) akan tetap kehilangan sedikit kualitas setiap kali dikode ulang.
Last verified:
OPUS to ALAC is processed in your browser with WebAssembly. No upload, no tracking, no limits. Your file never leaves your device.