Free Reelsmith tools and templates

Each tool runs in your browser, so what you type or pick stays on your device. No sign-up needed.

Video size checker

Check a video’s resolution, aspect ratio, length and file size against Instagram Reels, TikTok, YouTube Shorts and Facebook Reels limits. Runs in your browser; nothing is uploaded.

Caption and safe-zone checker

Type an on-screen caption to see its length, how it wraps on a 9:16 frame, and whether it stays clear of the app buttons and captions at the top, bottom and sides.