Free Sample Files & Dummy Generator for Testing & QA
Download standardized dummy files in exact sizes (100KB to 1GB) across PDF, DOCX, TXT, JPG, PNG, CSV, JSON, and ZIP formats. Authentic file headers, valid magic signatures, and direct CLI snippets.
Most Popular Sample Downloads
Instant downloads for QA file upload limits, memory benchmarks, and system integration testing.
Standardized Formats Available
Every format features structurally valid byte padding and legitimate MIME magic signatures.
PDF Document
Standard Portable Document Format files for rendering, printing, and upload testing.
Microsoft Word (DOCX)
OpenXML word processing files for document parsers, converter APIs, and office software.
Plain Text (TXT)
Authentic 2026 AI industry whitepapers, multilingual terminology, and ASCII specs.
JPEG Image (JPG)
Compressed sample JPEG images for thumbnail generators, image CDNs, and media galleries.
PNG Image (PNG)
Lossless PNG images with alpha channel transparency for UI testing and graphic pipelines.
Comma Separated Values (CSV)
Authentic 2026 AI model benchmark datasets with reasoning scores and pricing.
JavaScript Object Notation (JSON)
100% valid JSON datasets of 2026 frontier AI models and LLM evaluation metrics.
ZIP Archive (ZIP)
Compressed archive files containing dummy contents for extractor and decompressor tests.
Custom Dummy File Generator
Generate custom test files with exact byte sizes instantly inside your browser.
Browser generator supports up to 100MB directly. For files up to 1GB, browse our pre-built downloads.
Built Specifically for Modern QA Automation & Performance Testing
Unlike generic garbage-padded files that crash document parsers, FileDummy assets are structurally compliant, safely sanitized, and deterministically generated.
Valid Signatures & Headers
Files include authentic magic bytes (%PDF, PK..), passing strict server-side MIME validators and automated linters.
High-Bandwidth Performance
Low latency and dependable throughput. Ready for multi-thread download benchmarks and system pipeline tests.
Ready for CI/CD & Testing
Every file includes cURL, Wget, Python, and Node.js snippets for automated Playwright, Cypress, and Postman pipelines.
From the Developer Blog
Deep dives into file uploads, security hashes, QA testing, and cloud storage architectures.
Resumable File Uploads with tus Protocol — JavaScript Guide
Implement resumable file uploads in JavaScript using the tus protocol and tus-js-client. Handles network failures gracefully. Test with a free 1GB dummy file.
Multipart Upload to S3 and Cloudflare R2 with Node.js
Step-by-step guide to AWS S3 multipart uploads using the AWS SDK v3 in Node.js. Fully compatible with Cloudflare R2. Test with a free 500MB sample file.
Scan Uploaded Files for Viruses: ClamAV + Node.js Integration
Integrate ClamAV antivirus scanning into your Node.js file upload pipeline. Protect your application from malicious uploads with real-world code examples using clamscan.
Frequently Asked Questions
Are these sample files safe and virus-free?
Yes, 100%. All sample files are generated programmatically with valid headers and clean padded binary/text data. None of our files contain macros, executables, or malicious scripts.
How fast are the file downloads?
All files are served directly from high-speed distributed object storage with edge caching, providing fast download speeds and zero bandwidth throttling.
Can I hotlink or use the API in my automated scripts?
Yes, you can use our `/api/download?type=...&size=...` endpoint with standard tools like `curl -L` and `wget` in your CI/CD test pipelines.
What sizes are available for download?
Standard sizes range from 50KB, 100KB, 1MB, 5MB, 10MB, 20MB, 50MB, 100MB, 500MB up to 1GB. You can also generate exact custom byte sizes with our browser generator.