Archives
ZIP test files, any size.
Set a size and generate a structurally valid ZIP immediately. Nothing is uploaded and nothing is stored.
ZIP, built to spec.
Each file is a real archive with a correct central directory and CRC-32 per entry. The size you ask for is reached with a payload file stored inside the archive without compression, so the result opens in Explorer, Finder, 7-Zip and unzip. Most people generate these for testing archive upload limits and extraction pipelines.
Common sizes
Pick a size to jump straight to it, or set your own on the caliper above.
1 KB ZIP
1,024 bytes
5 KB ZIP
5,120 bytes
10 KB ZIP
10,240 bytes
50 KB ZIP
51,200 bytes
100 KB ZIP
102,400 bytes
500 KB ZIP
512,000 bytes
1 MB ZIP
1,048,576 bytes
2 MB ZIP
2,097,152 bytes
3 MB ZIP
3,145,728 bytes
5 MB ZIP
5,242,880 bytes
10 MB ZIP
10,485,760 bytes
15 MB ZIP
15,728,640 bytes
20 MB ZIP
20,971,520 bytes
25 MB ZIP
26,214,400 bytes
50 MB ZIP
52,428,800 bytes
100 MB ZIP
104,857,600 bytes
200 MB ZIP
209,715,200 bytes
500 MB ZIP
524,288,000 bytes
1 GB ZIP
1,073,741,824 bytes
2 GB ZIP
2,147,483,648 bytes
Questions.
How small can a ZIP file be?
About 368 bytes. Below that the format cannot carry its mandatory structure, let alone padding.
Will the file open normally?
Yes — it opens in Explorer, Finder, 7-Zip and unzip, because the padding lives in a payload file stored inside the archive without compression.
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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