Skip to content
PPureDevKit

Tools/Dummy files

Dummy files

Build a file of N bytes in memory and download it. Nothing is uploaded.

Loading tool…

How to use Dummy files

  1. 1. Set a size. Bytes, max 32 MB.
  2. 2. Pick fill. Zeros, text, random.
  3. 3. Download. Built with Blob in this tab.
  4. 4. Hash it. Hash Generator if you need a digest.

About this tool

Upload limits and progress bars need files of a known size. Generating them locally beats downloading a 20MB sample from somewhere shady.

Memory

The whole file sits in RAM. Don't ask for hundreds of MB.

Random

Web Crypto in 64KiB chunks.

Code examples

size

1048576

Frequently asked questions

Related tools

ZIP

Build a zip or list files inside one. All in memory.

Hash Generator

SHA-1, SHA-256, SHA-384, SHA-512, MD5, and HMAC from text or files in-browser.

Placeholder

PNG/JPEG/WebP placeholders at any size, in-browser.

All tools