Requirements
Any current browser on a phone, tablet or computer. Nothing to install.
Tool · Sucia
Banner Check
Check a YouTube channel banner's size, shape and file size, and see the safe area for your name and logo that every phone, computer and TV shows. Your picture never leaves your device.
- Price
- Free
- Platforms
- In your browser
- For
- Channel art, YouTube
- Status
- Version 1.0.0
- Publisher
- Sucia
- Updated
- 3 October 2026
Free with a Sucia account; what you own shows in your library.
How you get it
Add it to your Library on your Sucia account, and it stays in your Library. In a browser, press Open in your browser.
Nothing to install
It runs in your browser on a phone, a tablet or a computer, and it stays in your Sucia Library.
Refunds and your account
One Sucia account for everything you own. Refund information.
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Caption Check
Open an SRT or WebVTT caption file, fix names and typos fast, and catch lines that are too long, too quick to read or on top of each other. Save it back as SRT or VTT. Nothing is uploaded.
Shorts Check
Check a vertical video before you post it: whether it fits as a YouTube Short, a TikTok or an Instagram Reel, and what the caption and buttons cover on a phone. Nothing is uploaded.
SRT Converter
Convert SRT, WebVTT and SBV caption files to each other or to plain text, one or many at once, and fix their timing with a shift, a two-point sync or a frame rate change. Nothing is uploaded.