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Testing Files Generator – Real test files: PDF,CSV,PNG,JPG,AVIF, JPG XL and more

Testing Files Generator is 100% free and open source tool for, like the tool? Consider Donation

Download Here (GitHub)

Do you want to create one file or thounads? JPG, PNG, TOML YAML LOG or anything else? Maybe you want to do upload limit testing? Or maybe you want to test various file names? You can do it all and tons of more. CLI + GUI, cross platform, 100% offline:

 

Generate documents: pdf, docx (Word), xlsx (Excel), pptx (PowerPoint)

Generate images: png, jpg, bmp, gif, ico, svg, tiff, webp, avif, jxl

Generate text: txt, md, csv, json, xml, html, log, yaml, toml

Generate archives: zip, targz (.tar.gz)

Generate audio: wav

Create one file or thousands of them

Full GUI + CLI

Ask for size in Bytes, KB, MB, GB

Generate archives with real files inside them

Repeat itself byte for byte – same recipe and seed, same bytes, on any machine. Commit a small recipe instead of large binary fixtures.

Say what should happen to each file – the manifest carries an expected outcome, so your test reads the assertion instead of you writing it out.

Take settings per format – image dimensions, JPEG quality, PDF pages, spreadsheet rows and columns.

Clean up after itself – verify tells you nothing moved, cleanup removes exactly what it wrote and nothing else.

Build a boundary set in one command – one byte under a limit, the limit itself, one byte over. That is where off by one errors live.

Generate damaged (corrupted) files

Pre-made presets: empty-and-minimal, filename-handling, size-boundaries, tabular-import, text-encoding, upload-validation

Each file got own settings, like you can create pdf with 1 page or 5000 pages, log file with 6 log types + many other settings

Batch generation with various batches and settings