What is FileMock and how does it help developers?

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.

Do I need to register or sign up to use FileMock?

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.

What file formats can I generate with FileMock?

FileMock generates fully functional files in multiple formats: Playable Videos (MP4, MOV, AVI, MKV, WebM, FLV) with test patterns, Viewable Images (PNG, JPG, WebP, BMP, GIF) with colorful gradients, Readable Documents (PDF, TXT, RTF, HTML, XML, CSV, JSON) with Lorem ipsum content, and Playable Audio files (MP3, WAV, OGG, M4A, WebM) with natural sounds like white noise, sine waves, and ambient tones.

Is FileMock safe for testing sensitive applications?

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.

What's the maximum file size I can generate?

File size limits vary by type: Videos up to 2000 MB, Images up to 2000 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.

Are the generated files real and functional?

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.

Can I use FileMock for automated testing and CI/CD pipelines?

Absolutely! FileMock is perfect for QA automation, unit testing, integration testing, and CI/CD pipelines. Generate consistent, functional test data for file upload testing, storage validation, and performance benchmarking in your development workflow.

How does FileMock compare to other file generators?

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.

Is FileMock really free? Are there any hidden costs?

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.

FileMock

Online & Ready

⚡ Generate Test Files for Testing

Create mock files for testing uploads, APIs, and storage systems.

Free • Fast • Testing-focused

✓No registration needed

✓Client-side generation

✓Multiple formats

Video

Audio

Image

Document

Video File Generator

Generate test video files in multiple formats with precise size control.

Target file size (MB):

Duration (seconds):

Video format:

✓MP4 • Compatible everywhere • Max 2000 MB

Playable in all major video players and browsers

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.

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Instant File Generation

Generate test files in seconds. No waiting, no delays - perfect for fast development cycles and CI/CD pipelines.

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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.

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CI/CD Pipeline Testing: Automate testing with consistent mock data in your deployment pipelines.

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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.

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Database Import Testing: Test data import functionality with CSV, JSON, and XML mock files.

Frequently Asked Questions

Everything developers need to know about using FileMock for testing and development workflows.