Free File Tools for Developers and QA
Generate sample files locally, test real download speed, and look up MIME types without uploading files or creating an account.
Sample File Generator
Generate TXT, CSV, JSON, XML, BIN, SVG and more locally in your browser with custom sizes up to 10MB.
Open toolDownload Speed Test
Measure real download throughput with CDN-hosted test files and Mbps results.
Open toolMIME Type Lookup
Find MIME types, file extensions, magic bytes, categories, and sample file links.
Open tool