Question 1

Are the generated dummy files valid and safe?

Accepted Answer

Yes. Every generated file is 100% syntactically valid according to official specifications. For example, PDFs conform to the PDF 1.7 standard, images are authentic raster/vector graphics, CSVs adhere to RFC 4180, and JSON files are strict ECMA-404 documents.

Question 2

Is any data uploaded to a server or third party?

Accepted Answer

No. The entire generation pipeline executes client-side inside your browser using JavaScript Blob objects, HTML5 Canvas, and Web APIs. No network requests are made, and no data is ever uploaded or stored.

Question 3

How can I test file upload size limits?

Accepted Answer

Select either the Binary (.bin) or PDF format, choose an exact size target (such as 5 MB, 10 MB, or 25 MB), and download the file. You can then submit it to test maxFileSize restrictions, multipart uploads, and HTTP 413 Payload Too Large responses.

Question 4

What is the maximum file size for binary file generation?

Accepted Answer

You can generate binary files up to 1 GB (1,024 MB) directly in your browser. With chunked in-memory stream assembly, files are created in seconds with negligible memory footprint.

Question 5

Can I generate PDF files with custom size and dimensions?

Accepted Answer

Yes. You can generate PDFs up to 60 pages in 8 distinct dimensions (A4, A3, A5, Letter, Legal, Tabloid, Executive, 16:9 Presentation) and specify an optional exact target size in MB or KB.

Generate dummy test files in seconds