About Testfilelab

Testfilelab is a free online tool for generating sample files to test with. Choose a format and a size, and Testfilelab creates the file for you: a placeholder image at the exact dimensions you need, or a sample document at the exact file size you need. You don't need to sign up or install anything.

We built Testfilelab because finding a test file of the right size or format usually means searching the web, renaming random files, or creating one by hand. We wanted a faster and more predictable way to get a file that matches your test conditions.

Testfilelab is run by Ankit K & Hitesh S, based in India.

What We Do

Testfilelab generates two kinds of files:

• Placeholder images. PNG, JPG/JPEG, WebP and GIF images from 1×1 to 5000×5000 pixels, with a background colour of your choice. Use them in layouts and mockups, or to test image uploads, thumbnails and conversion.
• Sample documents. PDF, DOCX, XLSX, DOC, TXT, Markdown and XML files at exact file sizes up to 100 MB, measured in binary units (1 MB = 1,048,576 bytes). Use them to test upload limits, file validation, previews, imports and processing workflows.

Every file has a stable URL, so you can use it in scripts, automated tests and CI pipelines as well as download it in your browser. Our guides explain common testing scenarios, such as upload limits, file validation and document processing.

Testfilelab only generates new files. You never upload your own files to us, so we never receive or store your documents or images.

Our Mission

Our mission is to make test files easy to get, so you can spend less time preparing test inputs and more time building and testing your application.

We believe a test file should be predictable: the right format, the right dimensions or byte size, and the same result every time you request it.

Who Can Use Testfilelab?

Testfilelab is designed for:

• Developers who need files to test uploads, validation rules, parsers, APIs and processing pipelines.
• QA testers who need repeatable files to check size limits, error handling and boundary cases.
• Designers who need placeholder images at exact dimensions for layouts and mockups.
• Content and marketing teams who need placeholder images while final artwork isn't ready yet.

Our tools are intended for users with different levels of technical experience. You don't need to know anything about file formats to download a file.

Our Approach

We focus on four principles:

• Simplicity: pick a format and a size, then download. No accounts, no setup.
• Accuracy: files are generated at the exact dimensions or byte size you request.
• Honesty about limits: we explain what each file contains and what it doesn't. For example, generated images use a solid background colour without transparency or animation, DOC files contain RTF content with a .doc extension, and sample documents are designed for size and file-handling tests rather than as realistic datasets.
• Continuous improvement: we keep improving our formats, pages and guides as testing needs change.

Our Commitment to Users

We aim to give clear information about each file format: what's inside the file, its technical details, and what it is and isn't suitable for testing.

Please read our Privacy Policy, Terms of Use and Cookie Policy to understand how Testfilelab works and what conditions apply to using it.

Get in Touch

We welcome questions, feedback and format requests. If you have a question about a file, find a technical issue, or want to suggest an improvement, please visit our Contact page.

Thank you for using Testfilelab.

Testfilelab: free test files and placeholder images, generated on demand.