Bold text over your photo
Upload a photo, pick a size, position it behind your headline, and download a PNG with the text baked in, sized for YouTube, Shorts, or a blog cover. Runs entirely in your browser; nothing is uploaded anywhere.
Frequently asked questions
What sizes does Thumbnail Maker support?
A YouTube video thumbnail at YouTube's current recommended resolution (3840×2160), a YouTube Shorts / vertical size (1080×1920), and a blog or Open Graph link-preview cover (1200×630).
How do I position the headline and stickers?
Drag the headline anywhere on the photo directly in the preview. Left or center alignment and a Tilt slider (which shears it into a diagonal parallelogram for a more dynamic look, rather than just rotating it) are both independent of the Style preset you pick, so any combination works. Emoji and arrow stickers work the same way once added, and arrows can also be resized, rotated, and recolored from the Stickers tab.
Does it upload my photo to a server?
No. The photo, headline, and stickers are composited with the Canvas 2D API entirely in your browser — nothing is ever sent anywhere.
Will it remember my font and style next time?
Yes. Your last-used size, font, style preset, and accent color are saved in your browser's local storage so your next thumbnail starts from the same look — the headline text itself and any stickers are not saved, since those are specific to each photo.
Is there a limit on the photo size I can upload?
Very high-resolution photos (roughly above 40 megapixels, the range some phones' "high-res" camera modes produce) are blocked with a warning rather than risking a frozen or crashed browser tab during editing.
What file format is the download?
A PNG with the photo, headline, and stickers all baked into a single flat image at the exact target dimensions.