100 KB FLAC sample file
A FLAC file of exactly 102,400 bytes. It is a valid Free Lossless Audio Codec file, generated for this site and checked with an independent parser. Use it wherever you need a 100 KB sample, test or dummy FLAC file.
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sample-flac-100kb.flac
100 KB102,400 bytes
Download 100 KB FLACDirect download. No sign-up and no waiting.
- Type
- audio/flac
- SHA-256
060ebecf3a6b4e5d0f92349583a5ae5f9f63458397f83b131703bbcf35c8d401- Direct URL
https://www.sampletestfiles.com/downloads/flac/sample-flac-100kb.flac
What is in this file
7 FLAC frames (0.6 s) of a synthesised musical phrase that repeats every eight seconds. The samples are stored verbatim, so the audio decodes bit for bit to the matching WAV data. 3 bytes of a standard PADDING metadata block bring the file to the exact size.
| Duration | 0.6 s |
|---|---|
| Sample rate | 44,100 Hz |
| Channels | 2 (stereo) |
| Bit depth | 16-bit |
| Block size | 4,096 samples |
| Encoding | Verbatim subframes (lossless, not compressed) |
| Tags | Vorbis comment (title, artist, album) |
First bytes of the file
The first 64 bytes of sample-flac-100kb.flac as a hex dump: offset, bytes, then the same bytes as text. The FLAC signature is 66 4C 61 43.
00000000 66 4c 61 43 00 00 00 22 10 00 10 00 00 0f 08 00 |fLaC..."........|
00000010 40 0a 0a c4 42 f0 00 00 63 bf 9a cc d8 ec 28 e9 |@...B...c.....(.|
00000020 80 5f 50 82 a7 41 57 3c 6d b3 04 00 00 87 25 00 |._P..AW<m.....%.|
00000030 00 00 53 61 6d 70 6c 65 54 65 73 74 46 69 6c 65 |..SampleTestFile|Preview
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Where 100 KB matters
A 102,400-byte file that sits exactly on the default request-body limit of Express. These are the default limits a file of this size is useful for testing:
| System | Limit | Note |
|---|---|---|
| Express body parsers | 100 KB (102,400 bytes) by default | A request body of exactly this size passes; anything larger returns 413 Payload Too Large. |
| Gmail message clipping | About 102 KB of HTML | Longer messages are truncated behind a "view entire message" link. |
| Amazon DynamoDB items | 400 KB per item | 100 KB fits; the 500 KB sample does not. |
Use this file for
- Checking email size handling
- Checking transcoding to MP3, AAC or Opus
- Verifying duration and tag reading
Testing notes for FLAC
- Cover art lives in the metadata, so a three-minute song can carry several megabytes before its first audio frame.
- Some tagging tools put an ID3 tag in front of the stream. The signature then no longer sits at byte 0, and a strict parser rejects a file that most players accept.
Technical details
| File name | sample-flac-100kb.flac |
|---|---|
| Format | FLAC (Free Lossless Audio Codec) |
| Extension | .flac |
| MIME type | audio/flac |
| Size | 102,400 bytes (100 KB) |
| Kind | Binary |
| Signature | 66 4C 61 43 |
| SHA-256 | 060ebecf3a6b4e5d0f92349583a5ae5f9f63458397f83b131703bbcf35c8d401 |
| Created | 2026-10-10 |
| Validation | Exact size, signature bytes and structure checked when the file was generated |
| Preview | Available on this page |
| Source | Generated for this site; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Audio |
Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Download from the command line and verify
Fetch the file with curl, then compare its checksum with the SHA-256 value above.
curl -o sample-flac-100kb.flac 'https://www.sampletestfiles.com/downloads/flac/sample-flac-100kb.flac'
sha256sum sample-flac-100kb.flac # Linux
shasum -a 256 sample-flac-100kb.flac # macOSOn Windows, run Get-FileHash sample-flac-100kb.flac -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.
Related files
Questions about this file
- Is this file exactly 100 KB?
- Yes. It is 102,400 bytes, which is 100 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 100 KB FLAC file?
- 7 FLAC frames (0.6 s) of a synthesised musical phrase that repeats every eight seconds. The samples are stored verbatim, so the audio decodes bit for bit to the matching WAV data. 3 bytes of a standard PADDING metadata block bring the file to the exact size.
- What audio is on the FLAC samples?
- A short synthesised musical phrase that repeats, as 16-bit stereo at 44,100 Hz. It was generated by code for this site and is free of any music copyright.