System
BAT test files, any size.
Set a size and generate a structurally valid BAT immediately. Nothing is uploaded and nothing is stored.
BAT, built to spec.
Each file is a Windows batch script with a real @echo off header. The size you ask for is reached with unreachable text after a goto :eof, which cmd.exe never parses, so the result opens in Notepad, VS Code and cmd.exe. Most people generate these for testing script upload handling and text-file size limits.
Common sizes
Pick a size to jump straight to it, or set your own on the caliper above.
1 KB BAT
1,024 bytes
5 KB BAT
5,120 bytes
10 KB BAT
10,240 bytes
50 KB BAT
51,200 bytes
100 KB BAT
102,400 bytes
500 KB BAT
512,000 bytes
1 MB BAT
1,048,576 bytes
2 MB BAT
2,097,152 bytes
3 MB BAT
3,145,728 bytes
5 MB BAT
5,242,880 bytes
10 MB BAT
10,485,760 bytes
15 MB BAT
15,728,640 bytes
20 MB BAT
20,971,520 bytes
25 MB BAT
26,214,400 bytes
50 MB BAT
52,428,800 bytes
100 MB BAT
104,857,600 bytes
200 MB BAT
209,715,200 bytes
500 MB BAT
524,288,000 bytes
1 GB BAT
1,073,741,824 bytes
2 GB BAT
2,147,483,648 bytes
Questions.
How small can a BAT file be?
About 111 bytes. Below that the format cannot carry its mandatory structure, let alone padding.
Will the file open normally?
Yes — it opens in Notepad, VS Code and cmd.exe, because the padding lives in unreachable text after a goto :eof, which cmd.exe never parses.
Can I ask for an unusual size?
Any byte count above the minimum works, including values like 3,145,728 or 27.5 MB. Drag the caliper or type the number.
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