Generate Random Binary Files
Generate random binary files. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Random Binary Files
- 1. Set the byte count. Enter Number of bytes to decide how much random data gets generated, from a handful of bytes to a larger sample block.
- 2. Choose the display format. Pick Hexadecimal, Binary (8 bits), or Decimal (0-255) to control how each byte is rendered in the text output.
- 3. Set a separator. Choose Separator, a newline or space, so the bytes come out formatted the way you plan to paste them into a script or hex viewer.
- 4. Copy the bytes. Copy the resulting byte values into your project. Each run produces a fresh, independent set of random bytes.
When to use Generate Random Binary Files
Generate Random Binary Files produces a block of random bytes rendered as hex, binary, or decimal text, useful whenever you need raw random data for a test without a real file to decode. It suits developers testing binary parsing code.
- Testing a byte-parsing function. A developer writing code that reads raw byte streams, such as a custom binary file format, wants sample byte values to confirm the parser handles arbitrary data correctly.
- Generating filler entropy for a demo. Someone building a visualization of randomness or entropy wants a quick block of random bytes to display or chart without pulling from an actual entropy source.
- Checking a hex viewer or byte inspector tool. A developer building a hex editor or byte inspector wants sample data in hexadecimal format to confirm the viewer renders offsets and values correctly.
- Practicing binary and decimal byte conversion. A student learning how a single byte maps between binary, decimal, and hex wants a batch of random byte values to convert between formats by hand.
Examples
Thirty-two random bytes in hex
Output
a3 1f c0 7e ...
About the Generate Random Binary Files tool
Generate Random Binary Files is a free online tool that works entirely inside your web browser. Generate random binary files. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 120 Random utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 3 settings, including Number of bytes, Format and Separator, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Generate Random Binary Files cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.