FigEditor combines text-to-figure, sketch-to-figure, reference-guided creation, and figure vectorization in a browser workspace. Users can describe mechanisms, pathways, workflows, experiments, or structures and receive a structured draft with visual hierarchy. Uploaded sketches can be polished while preserving core logic, and reference images can guide composition, palette, and density. Existing PNG or JPG figures can be converted into scalable vector assets for later editing. Region selection supports revisions to labels, arrows, modules, colors, and layout without restarting. Creation tools include Paper Banana, AI Scientific Illustration, Scientific Poster Maker, and a flowchart mode. Outputs include editable SVG plus PNG and JPG exports, with high-resolution or up-to-4K generation on supported models and watermark-free downloads on listed plans.