30 MB SRT sample
An SRT file of exactly 31,457,280 bytes. It is a valid SubRip subtitles file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 30 MB sample, test or dummy SRT file.
Download
sample-srt-30mb.srt
30 MB31,457,280 bytes
Download 30 MB SRTCreated in your browser in a few seconds, then checked against the SHA-256 checksum. The file is not uploaded anywhere. No sign-up.
- Type
- application/x-subrip
- SHA-256
3d661a7d88f9bc484eef2a6e6e0f71292ad53e685e81f483b92e14730f154e70- Delivery
- Created in your browser from static generator assets (how it works).
What is in this file
263,302 numbered subtitle cues, one every 457 ms and each shown for 411 ms, with up to three lines of text of at most 42 characters. The last cue repeats "End of sample" lines to bring the file to the exact size.
| Cues | 263,302 |
|---|---|
| Timing | HH:MM:SS,mmm |
| Line length | At most 42 characters |
| Formatting tags | None |
| Encoding | UTF-8 (ASCII characters only) |
| Line endings | LF |
How the file begins
The opening lines of sample-srt-30mb.srt, exactly as they appear in the file.
00000000 31 0a 30 30 3a 30 30 3a 30 30 2c 30 30 30 20 2d |1.00:00:00,000 -|
00000010 2d 3e 20 30 30 3a 30 30 3a 30 30 2c 34 31 31 0a |-> 00:00:00,411.|
00000020 45 76 65 72 79 20 6c 69 6e 65 20 69 6e 20 74 68 |Every line in th|
00000030 69 73 20 64 6f 63 75 6d 65 6e 74 20 77 61 73 20 |is document was |Preview
Creates the file in your browser and shows the first 64 KB of it.
Where 30 MB matters
A 31,457,280-byte file, 30 MB in the binary units that operating systems and upload limits use. It is useful wherever a form, an API gateway, a storage quota or a mail server is configured with a limit of about this size.
Use this file for
- Finding the first upload limit in a new stack
- Testing caption editors and timing tools
- Testing subtitle upload and display
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.
Technical details
| File name | sample-srt-30mb.srt |
|---|---|
| Format | SRT (SubRip subtitles) |
| Extension | .srt |
| MIME type | application/x-subrip |
| Size | 31,457,280 bytes (30 MB) |
| Kind | Text |
| SHA-256 | 3d661a7d88f9bc484eef2a6e6e0f71292ad53e685e81f483b92e14730f154e70 |
| Created | 2026-10-23 |
| Validation | See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility. |
| Preview | Available on this page |
| Source | Generated in your browser by this site's generator; not copied from elsewhere |
| Licence | Free to use, modify and redistribute (terms) |
| Category | Subtitles |
Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked
Verify your copy
This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.
sha256sum sample-srt-30mb.srt # Linux
shasum -a 256 sample-srt-30mb.srt # macOSOn Windows, run Get-FileHash sample-srt-30mb.srt -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.
Related files
Questions about this file
- Is this file exactly 30 MB?
- Yes. It is 31,457,280 bytes, which is 30 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
- What is inside the 30 MB SRT file?
- 263,302 numbered subtitle cues, one every 457 ms and each shown for 411 ms, with up to three lines of text of at most 42 characters. The last cue repeats "End of sample" lines to bring the file to the exact size.
- How long are the cues?
- Each cue lasts three seconds and a new cue starts every four seconds.