: Sites like ExampleFile and FreeTestData offer a variety of dummy files (text, PDF, video) for testing.
If you need this precise size, you can generate it instantly using a terminal command:
: Large .txt files containing public records are often available for download from government portals like Oklahoma's Open Data . How to Create Your Own 137.95 MB Text File
:Open the Terminal and run: mkfile 137.95m testfile.txt
: You can find repositories specifically designed for testing large downloads, such as large-file-download-test , which hosts multi-megabyte text files.
If you need a large text file for testing purposes, you can use the following resources to find or generate one: Sources for Large Test Files