Blog
Blog.
Notes on upload limits, file validation, and what actually breaks at scale.
File Upload Limits by Platform: The Complete 2026 Reference
Every major platform's file upload limit in one table — Gmail, Slack, Discord, WhatsApp, GitHub, and more — with a link to generate a test file at the exact size.
Test EXE Files: What They're For and How to Generate One Safely
A test .exe file with a real, valid header and zero executable code — useful for upload validation, security scanning, and installer-flow testing without any actual risk.
How to Test File Upload Limits: A Practical Guide
Testing an upload limit properly means three exact files, not one: at the limit, one byte over, and comfortably under — here's how and why.
How to Create a Test File of Any Size
Learn how to create exact-size test files for upload limits, API testing, email attachments, storage checks and QA workflows.