From idea to upload-ready artwork
Start quickly, then control the details that matter
A thumbnail job starts with one static background and can include one optional person or product foreground. WoluTools reads orientation, rejects animation or damaged content, and never sends the picture to an AI model or design service. Twelve presets provide a useful composition immediately, while every preset remains editable.
The protected editor adds ten installed type styles, precise headline placement, outline and shadow controls, optional text panels, badges, overlay colours and image adjustments for brightness, contrast, saturation, blur and vignette. Up to twelve local vector layers can add red arrows, circles, boxes, lines or stars. Layers can be positioned, resized, rotated, recoloured, reordered and removed without a stock-asset or design API.
Video recommendations and vertical surfaces crop differently, so the app keeps separate horizontal focus, vertical focus and zoom settings for 16:9 video and 9:16 Shorts artwork. A switchable safe area marks canvas edges and the timestamp corner, while the compact feed preview exposes wording that becomes too dense at real card size.
Text must fit; it is never silently cut
The browser preview gives immediate composition guidance; the local worker recreates version 4 at exact export pixels. The final worker uses fixed installed fonts and reduces the headline only to a documented minimum. If three lines still do not fit, the job stops with a useful instruction instead of exporting missing words. Undo and redo make experimentation reversible before the confirmed server run.
One download for each intended surface
Video output is rendered at 3840 × 2160 pixels and includes a compact 1280 × 720 JPG below two megabytes. Shorts output is rendered at 2160 × 3840 with a compact vertical JPG. Only the verified package is charged. The ZIP stores the confirmed text, layers, image adjustments, crop, source hashes, exact dimensions, byte counts, layout version and a verified SHA-256 inventory.