ThumbFuel / Free tools
Free tools for YouTube creators
Small utilities that run entirely in your browser — free, no signup, and nothing leaves your device unless it has to.
YouTube Thumbnail Resizer
Crop, fit or blur-pad any image to a perfect 1280×720 YouTube thumbnail. Also makes TikTok and Shorts sizes.
Open resizer →YouTube Thumbnail Tester
Preview your thumbnail inside a realistic YouTube search results mockup — at real size, next to the competition.
Open tester →AI Voiceover Generator
Turn your script into a natural-sounding voiceover with 70+ voices. 3 free generations a day, no signup.
Open voiceover →Need thumbnails with your face in them? Try the AI thumbnail generator — your first generation is free.