1 KB SRT sample file

An SRT file of exactly 1,024 bytes. It is a valid SubRip subtitles file, generated for this site and checked with an independent parser.

sample-srt-1kb.srt

1 KB1,024 bytes

Download 1 KB SRT

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Type: application/x-subrip
SHA-256: 2417690a4ca72546ce44459a45d337584c0f42c0d14d362ae360a1c976560895
Direct URL: https://sampletestfiles.com/downloads/srt/sample-srt-1kb.srt

What is in this file

8 numbered subtitle cues with comma-separated millisecond timestamps, plus one closing cue whose text is lengthened to reach the exact size.

Cues	9
Cue length	3 seconds, one every 4 seconds
Running time	00:00:36
Encoding	UTF-8 (ASCII characters only)
Line endings	LF

How the file begins

The opening lines of sample-srt-1kb.srt, exactly as they appear in the file.

1
00:00:00,000 --> 00:00:03,000
This sample file exists so that software
can be tested with realistic input.

2
00:00:04,000 --> 00:00:07,000
Every line in this document was generated
by a script and describes nothing
confidential.

3
00:00:08,000 --> 00:00:11,000
Use it to check that uploads, downloads

Preview

Shows the file contents.

Where 1 KB matters

The smallest practical test file: 1,024 bytes, small enough to travel in a single network packet. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Ethernet	1,500 bytes (typical MTU)	A 1 KB payload fits in one packet with its headers.
Browser cookies	4,096 bytes per cookie	1 KB is well inside the limit; the 5 KB sample is over it.

All 1 KB sample files

Use this file for

Smoke tests in CI that must run in milliseconds
Testing subtitle upload and display
Checking conversion to WebVTT

Testing notes for SRT

SRT uses a comma before the milliseconds and WebVTT uses a full stop. Mixing them up is the usual reason a converted file fails.
Files saved in a legacy encoding show garbled accents; importers should detect or require UTF-8.

SRT format reference

Technical details

File name	sample-srt-1kb.srt
Format	SRT (SubRip subtitles)
Extension	.srt
MIME type	application/x-subrip
Size	1,024 bytes (1 KB)
Kind	Text
SHA-256	2417690a4ca72546ce44459a45d337584c0f42c0d14d362ae360a1c976560895
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	Subtitles

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-srt-1kb.srt 'https://sampletestfiles.com/downloads/srt/sample-srt-1kb.srt'
sha256sum sample-srt-1kb.srt     # Linux
shasum -a 256 sample-srt-1kb.srt # macOS

On Windows, run Get-FileHash sample-srt-1kb.srt -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 1 KB?: Yes. It is 1,024 bytes, which is 1 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 1 KB SRT file?: 8 numbered subtitle cues with comma-separated millisecond timestamps, plus one closing cue whose text is lengthened to reach the exact size.
How long are the cues?: Each cue lasts three seconds and a new cue starts every four seconds.

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