WAV File Metadata Viewer

How to use

1. 1Drop a .wav, .wave, or .bwf file onto the upload area, or click Choose file. Files up to 1 GB are supported. The audio is read in your browser and never uploaded.
2. 2Read the green summary card: total duration, file size, container kind (RIFF / RIFX / RF64), codec, channels, sample rate, bit depth, and bitrate.
3. 3Open the Audio format card for the full fmt chunk: format code, byte rate, block align, valid bits per sample, channel mask, and the extensible SubFormat GUID when present.
4. 4Scroll the INFO tags table to read the Title, Artist, Album, Software, Copyright, and other RIFF metadata fields. Each row has a Copy button.
5. 5If the file is a broadcast WAVE, read the bext card for the originator, origination date, time reference, and (on bext version 2) integrated loudness, loudness range, and max true peak.
6. 6Check the RIFF chunks table for the full ordered list of top-level chunks with offset, payload size, and padding flags. Use Plain text report or JSON report at the bottom to copy the full readout.

About this tool

WAV File Metadata Viewer reads a .wav file in your browser and reports every fact you would normally need a desktop tool to find. Sample rate, bit depth, channel count, codec, duration, bitrate, and total sample frames are derived from the WAV format chunk and the data chunk size, with the channel layout label resolved from the channel mask when the file uses the extensible format. The tool walks the RIFF container chunk by chunk, lists every top-level chunk with its FourCC, byte offset, and payload size, and flags the odd-size padding bytes the spec adds between chunks. Embedded INFO tags inside LIST chunks are decoded with their human labels (Title, Artist, Album, Software, Copyright, Genre, and so on), so retagged files reveal what the editor wrote. Broadcast WAVE (bext) chunks are parsed per EBU R 98 with description, originator, originator reference, origination date and time, time reference, version, UMID presence, and the version 2 loudness metering values (integrated loudness, loudness range, max true peak, max momentary, max short-term). The sampler (smpl) chunk surfaces the MIDI unity note, pitch fraction, SMPTE format and offset, and loop count for sample library files. Cue point count is reported from the cue chunk, and an embedded ID3v2 tag block is detected with its version and size. The tool understands the three RIFF flavours used in the wild: classic little-endian RIFF, big-endian RIFX, and the RF64 extension used for files larger than 4 GiB. The extensible SubFormat GUID is decoded back to its underlying format label when the file uses 0xFFFE. Warnings flag size mismatches and oversized chunks so corrupt or streamed files are obvious. Useful for podcasters checking whether a delivered file actually matches the spec, sound designers verifying sample library headers, broadcast engineers auditing bext loudness fields, and developers debugging recorder output. Everything runs locally; the WAV stays on your device, the chunk walk happens inside the tab, and nothing is uploaded.

Free to use. Works in your browser. No signup, no login.