Dummy File Generator

Create test files of an exact size, valid or corrupted: images, PDF, text, raw or custom bytes

File

Type

File name

Give it another extension to test extension checks.

Dimensions

× px

Enter a width and a height between 1 and 10,000.

Colors

Background Text

Text

Written in the middle. Empty for the dimensions.

Pages

Between 1 and 10,000 pages.

Bytes

Hex digits (0–9, a–f). Spaces, newlines, commas, colons and 0x are ignored, two digits per byte. The file is exactly these bytes; the corruption options below still apply on top.

Rows

Between 0 and 1,000,000.

Fake people (name, email, city, date, amount). Ignored when a file size is set.

Content

Zeros Random

Random bytes can't be compressed, which matters when a server or a proxy gzips the upload.

File size

Corruption optional

Signature

Overwrites the first bytes (the magic number) that tools read to recognize a file.

Cut the end

bytes

Removes the last bytes, like an interrupted upload.