Lossless baseline for further work.
ALAC preserves every detail of the source M4A, which prevents additional quality loss during subsequent edits or re-encoding. The original M4A compression cannot be undone, but no new artifacts will be introduced.
MENGAPA MENGONVERSI
01
ALAC preserves every detail of the source M4A, which prevents additional quality loss during subsequent edits or re-encoding. The original M4A 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 M4A. The conversion removes a recurring compatibility friction without changing what the file actually contains.
03
ALAC files are typically smaller than their M4A 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 M4A 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
| M4A | ALAC | |
|---|---|---|
| Ekstensi | .m4a | .m4a .caf |
| Tipe MIME | audio/mp4 audio/x-m4a | audio/alac |
| Diperkenalkan | 2004 | 2004 |
| Pemelihara | Apple / ISO | Apple |
| Magic number | — | — |
| Spesifikasi | Lihat spesifikasi ↗ | Lihat spesifikasi ↗ |
KOMPATIBILITAS
| Platform | Windows | macOS | iOS | Android | Chrome | Firefox | Safari | Edge |
|---|---|---|---|---|---|---|---|---|
| M4A | Bawaan | Bawaan | 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. |
An AAC-encoded audio file commonly produced by Apple devices and iTunes. Better quality than MP3 at similar sizes.
Typical uses
iTunes purchases, voice memos, modern music libraries.
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 M4A 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 M4A 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:
M4A to ALAC is processed in your browser with WebAssembly. No upload, no tracking, no limits. Your file never leaves your device.