MP3 Info & ID3 Tag Viewer
Inspect hidden ID3 tags, bitrates, audio stream specs, and embedded cover art directly in your browser without uploading.
Why Use Our Free MP3 Info Viewer?
OctalOne offers a safe, instant, and private way to read embedded ID3 metadata and MPEG stream specifications from your MP3 audio files without sending your personal recordings to remote servers.
- 100% Client-Side Privacy: All audio decoding and metadata parsing happens in your local browser memory. No audio bytes or metadata ever leave your computer.
- Complete ID3 Support: Reads ID3v1, ID3v1.1, ID3v2.2, ID3v2.3, and ID3v2.4 tags including multi-byte UTF-8, Latin-1, and UTF-16 encodings.
- Deep Audio Stream Insights: Decodes bitrates (CBR and VBR), sample rates, channel configurations, and frame lengths.
- Cover Art Extraction: Extracts embedded album art images with one-click download.
- Handles Any File Size: Chunked slice reading parses files from 100 KB up to 2 GB+ in milliseconds without freezing.
How to Inspect MP3 Data
Extract tags and audio properties in seconds.
- Select Audio: Drag & drop an MP3 file or click "Browse files".
- Inspect Tags: Check track title, artist, album, track number, year, and lyrics in the ID3 tab.
- Analyze Audio Specs: Review bitrate, sample rate, channels, and duration in the Technical tab.
- Export: Download structured JSON, an itemized audit receipt, or extract embedded album cover art.
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Frequently Asked Questions
No, your audio files never leave your device. All ID3 tag reading, MPEG stream analysis, and cover art extraction happen 100% locally in your web browser. This ensures complete privacy for personal recordings, voice notes, and music tracks.
The tool extracts ID3v1, ID3v1.1, ID3v2.2, ID3v2.3, and ID3v2.4 tags. You can view track title, lead artist, album, release year, track number, genre, composer, BPM, disc number, embedded comments, and unsynchronized lyrics.
Yes! If the MP3 contains an embedded front cover image (APIC or PIC frame), the tool displays it in high resolution and provides a direct 'Download Album Art' button to save the image (JPEG or PNG) to your computer.
Beyond ID3 tags, the tool inspects the low-level MPEG audio stream header to reveal nominal and average bitrate (CBR vs VBR), sampling rate (Hz), channel mode (Stereo, Joint Stereo, Mono), MPEG version (MPEG-1, MPEG-2, MPEG-2.5), Layer, and true audio duration.
Yes. The tool uses optimized chunked slice reading, extracting headers from the start and end of the file in milliseconds. Files ranging from 100 KB up to 2 GB+ process instantly without consuming large amounts of RAM or causing browser lag.