Video File Generator
Generate test video files in multiple formats with precise size control.
✓MP4 • Gradient • Max 2000 MB
Playable in all major video players and browsers
Video
Audio
Image
Document
Free Test File Generator
More Free Tools
File converters and utilities that run in your browser, just like the generator. No upload, no signup.
Why QA Teams Choose FileMock
Purpose-built for QA engineers, developers, and testing teams who need reliable test data and mock files for their applications.
🚀
Instant File Generation
Generate test files in seconds. No waiting, no delays - perfect for fast development cycles and CI/CD pipelines.
🔒
Privacy & Security
All files generated client-side in your browser. No data leaves your machine, ensuring complete privacy for sensitive projects.
⚡
Testing-Optimized
Built specifically for QA engineers, developers, and testers. Precise size control, multiple formats, and testing-focused features.
🎯
Functional & Playable Files
All generated files are fully functional - videos play smoothly, audio files have natural sounds, PDFs contain readable text, and images display properly. Real files, not empty placeholders.
📱
Works Everywhere
Browser-based tool that works on any device. No installations, no dependencies - just open and use instantly.
💎
Always Free
Completely free forever. No hidden costs, premium features, or usage limits. Built to support the developer community.
Perfect for These Development Scenarios
✓
File Upload Testing: Test different file sizes, formats, and edge cases in your upload systems.
✓
API Endpoint Validation: Send mock files to API endpoints to test file processing and validation logic.
✓
Storage System Testing: Test storage limits, file handling, and backup systems with various file types.
✓
Performance Benchmarking: Generate large files to test system performance and resource usage.
✓
Content Management Testing: Test CMS systems with various file formats, document uploads, and media management workflows.
✓
CI/CD Pipeline Testing: Automate testing with consistent mock data in your deployment pipelines.
✓
QA Automation: Generate test files for automated testing scenarios and edge case validation.
✓
Media Processing Testing: Test video, audio, and image processing pipelines with various file formats.
✓
EXIF Metadata Testing: Test photo management systems with JPEG images containing camera data, shooting settings, and custom metadata.
✓
Database Import Testing: Test data import functionality with CSV, JSON, and XML mock files.
Learn File Testing Best Practices
Master file testing with expert guides, practical tutorials, and case studies based on common testing scenarios.
📝
Expert Blog
In-depth tutorials on file testing, security validation, and performance optimization strategies.
Read Articles
🛠️
Testing Resources
Comprehensive tools, frameworks, and documentation for professional file testing workflows.
Explore Tools
📊
Case Studies
Practical testing scenarios from QA, frontend, and security testing workflows.
View Cases
Frequently Asked Questions
Everything developers need to know about using FileMock for testing and development workflows.
FileMock is a free online tool designed specifically for developers and QA engineers to generate test files instantly. It creates fully functional, playable files with realistic content - videos play smoothly, audio files have natural sounds, PDFs contain readable Lorem ipsum text, and images display properly. Perfect for comprehensive testing scenarios.
No registration required! FileMock works entirely in your browser without any signup process. Simply select your desired file type, configure the settings, and generate your test files instantly.
FileMock generates fully functional files in multiple formats: Playable Videos (MP4, MOV, AVI, MKV, WebM, FLV) with test patterns, Viewable Images (PNG, JPG, WebP, GIF, BMP, TIFF, including animated GIF and WebP) with colorful patterns, Readable Documents (PDF, DOCX, XLSX, TXT, CSV, RTF, HTML, XML, JSON, GeoJSON, EML, ZIP) with sample content, and Playable Audio files (MP3, WAV, OGG, M4A, WebM) with sounds like white noise, sine waves, and ambient tones. Every format is encoded with its real codec or structure, not just renamed.
Yes! FileMock generates files entirely client-side in your browser. No data is sent to external servers, ensuring complete privacy and security. All files are created locally and can be used safely for testing production applications.
File size limits vary by type: Videos up to 2000 MB, Images up to 1000 MB, Documents up to 2000 MB, and Audio files up to 2000 MB. These limits are designed to cover most testing scenarios while maintaining fast generation speeds.
Yes! All FileMock files are completely functional and can be opened on any device. Videos and audio files are playable with media players, PDFs open in any PDF reader with readable Lorem ipsum text, images display properly in browsers and image viewers, and documents contain realistic structured content. They're not just empty files - they're fully usable for comprehensive testing.
Yes, as a source of test fixtures. FileMock runs in your browser, so you generate the files once, then commit the small ones to your repository or store the large ones as build artifacts for your automated tests and CI/CD pipelines. There is no API or command-line tool to call from a pipeline.
FileMock is specifically built for developers with features like multiple file formats, precise size control, no registration requirements, client-side generation for privacy, and fast performance. Unlike generic tools, it's optimized for development and testing workflows.
FileMock is completely free with no hidden costs, premium features, or usage limits. It's built to support the developer community and will remain free forever. No credit card required, no trial periods, just free functional testing files for developers.
Yes! For JPEG images, you can add EXIF metadata including orientation, camera make and model, shooting settings (ISO, aperture, shutter speed, focal length), timestamps, copyright details, and photographer information. This feature is perfect for testing photo management systems, image processing applications, and media workflows that rely on camera metadata.