Creator Upload Lab provides browser-only utilities for common last-mile problems: caption timing, vertical frame composition and upload-size planning. It is an independent website, not affiliated with YouTube, Google, TikTok or other platforms.
Who the tools are for
Independent video makers, editors, small channel operators and creators preparing Shorts or long-form uploads can use these tools without an account. The primary goal is to help people catch avoidable technical mistakes, understand assumptions and make better upload decisions.
What is original here
The subtitle timing parser, timing diagnostics, time-shift exports, adjustable safe-zone preview, downloadable annotated image and bitrate calculation workflow are site-specific implementations. The bitrate reference data belongs to the official upload guidance linked in the tool. We do not claim proprietary ownership of platform specifications or open standards.
Limits
We cannot check actual spoken-word accuracy from an SRT file alone, guarantee a UI safe zone across all phone devices, or promise an exact video filesize before encoding. Each tool displays its assumptions so you can verify the output in the final destination application.
Corrections and questions: kimkidong1402@gmail.com.