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Formats Articles

Articles and guides about Formats. Tips, tutorials, and best practices.

All (42) Images (19) Conversion (16) JPG (14) Batch Processing (13) Bulk Conversion (12) PNG (10) Audio (10) Documents (10) PDF (10) Web Performance (9) Compression (8) MP3 (8) WEBP (7) Conversion Tips (7) AVIF (6) HEIC (5) Optimization (5) FFMPEG (5) Transcription (4) File Size (4)

What Is the AAC Audio Format? A Practical Guide

Learn what is aac audio format and how it works. Understand AAC vs MP3, the M4A container, and why Apple Music and YouTube use this efficient lossy codec.

8 min read • February 07, 2026
Audio AAC M4a