AI Services for Illustrator that Solve "Illustration Refinement and Upscaling"

Old hand-drawn manuscripts, scans, and small rough sketches made for social media often need to be delivered as large-format print or high-resolution data—a situation that's far from rare for illustrators. Filling in detail by hand is tedious work, but AI-based upscaling can significantly ease that burden. This page compares AI tools you can use for upscaling and finishing illustrations.

How naturally can rough lines be filled in

When enlarging a low-resolution image, simple stretching makes jagged edges and blur obvious, but AI infers the continuity of lines and the gradation of fills as it fills in detail, getting closer to a finish that can hold up for print. Some tools can simultaneously remove scan noise and smooth out uneven coloring, and being able to adjust processing strength to match a manuscript's quirks changes how natural the final result looks.

Features to check based on the manuscript's condition

• Low incidence of breakdown (blurred edges, noise) at each magnification level
• Whether there are optimized settings for line art versus color illustrations
• Whether specific areas (face, hands, etc.) can be strengthened individually
• Whether it can export at the dpi and color mode needed for print submission