About ThumbBlitz
ThumbBlitz is a free thumbnail maker that runs entirely in your browser. You upload a screenshot you already have, add a headline and stickers, and export the image at the size a game platform expects. There is no account system, no watermark, and no payment flow — the site sells nothing.
Why it exists
Most thumbnail tools fall into one of two camps. Either they are full design suites that ask you to learn an interface for a job that takes four minutes, or they are generators that invent an image instead of using the one you captured. Neither matches the common case: a creator who has a perfectly good screenshot and needs bold, legible text on top of it.
So this site does one thing. It puts text and stickers on your picture, at the right dimensions, and gets out of the way.
What it does
- ▸Loads your screenshot locally — the file is never sent to a server.
- ▸Renders headline text with an outline and shadow so it stays readable on busy art.
- ▸Adds stickers you can drag into place.
- ▸Exports at 1920×1080, 1280×720, or 512×512 — all documented official sizes.
- ▸Checks an existing image against those specs and re-exports it correctly.
What it deliberately does not do
- !It does not generate imagery. Nothing here is synthesised — the picture is yours.
- !It does not store your images. Close the tab and your session is gone.
- !It does not remove backgrounds, upscale, or retouch.
- !It does not provide artwork of its own. Bring images you have the right to use.
Independence
ThumbBlitz is an independent project. It is not affiliated with, endorsed by, or connected to any platform or publisher whose games you might make artwork for. All trademarks belong to their respective owners.
Not affiliated with Roblox Corporation.
Contact
Bug reports, corrections, and questions go tohello@thumbblitz.com. See also theprivacy policy and terms of use.