Documents

HTML test files, any size.

Set a size and generate a structurally valid HTML immediately. Nothing is uploaded and nothing is stored.

0bytes
Exact size

HTML, built to spec.

Each file is a complete HTML5 document that renders in a browser. The size you ask for is reached with an HTML comment, so the result opens in Chrome, Firefox, Safari and Edge. Most people generate these for testing page-weight budgets and HTML upload handling.

Common sizes

Pick a size to jump straight to it, or set your own on the caliper above.

1 KB HTML

1,024 bytes

5 KB HTML

5,120 bytes

10 KB HTML

10,240 bytes

50 KB HTML

51,200 bytes

100 KB HTML

102,400 bytes

500 KB HTML

512,000 bytes

1 MB HTML

1,048,576 bytes

2 MB HTML

2,097,152 bytes

3 MB HTML

3,145,728 bytes

5 MB HTML

5,242,880 bytes

10 MB HTML

10,485,760 bytes

15 MB HTML

15,728,640 bytes

20 MB HTML

20,971,520 bytes

25 MB HTML

26,214,400 bytes

50 MB HTML

52,428,800 bytes

100 MB HTML

104,857,600 bytes

200 MB HTML

209,715,200 bytes

500 MB HTML

524,288,000 bytes

1 GB HTML

1,073,741,824 bytes

2 GB HTML

2,147,483,648 bytes

Questions.

How small can an HTML file be?

About 189 bytes. Below that the format cannot carry its mandatory structure, let alone padding.

Will the file open normally?

Yes — it opens in Chrome, Firefox, Safari and Edge, because the padding lives in an HTML comment.

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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