ThumbBlitz

Create Roblox thumbnails in-browser from your screenshots. Add outlined headlines, stickers and backdrops, drag items on the canvas, export 1920×1080 PNG. Use ThumbBlitz to create Roblox covers from your own screenshots without uploading them. The editor loads in the browser, where you type a headline, pick from 8 text styles, add stickers from a set of 15, and select one of 16 backdrop presets. Drag text and stickers into place, reset the canvas if needed, then export a PNG at 1920×1080, 1280×720 or 512×512. There is no account, no watermark and no AI guesswork. Separate pages cover specific games, thumbnail size, backgrounds, A/B testing, game icons, decals and templates. The workflow is manual: the thumbnail is made from your image, not generated.