Toolzap

Built a full multi-tool web app with a consistent UI system and a set of reusable canvas rendering engines.

Wrote deterministic canvas rendering engines for ink, stamp, scan, paper, photocopy, redaction, and image composition, with seeded randomness for repeatable effects.

Built an ink engine with procedural paper fibers, ink starvation, edge bleed, color separation, transparent exports, and seeded output. Stamp engine supports curved text, logo placement, pressure variation, and organic ink loss.

Built a digital scan simulator with perspective distortion, uneven lighting, sensor noise, color drift, blur, CCD streaks, and paper texture overlays.

Built a Xerox / photocopy simulator with grayscale conversion, thresholding, Bayer dithering, toner bloat, scanline variation, and random toner artifacts.

Built a text-to-handwriting document generator with editable pages, ruled-paper layout, ink bleed, scan effects, multi-page handling, and PDF export.

Built secure redaction that permanently overwrites image pixels instead of placing reversible overlays, and metadata stripping by reconstructing images through a fresh canvas export.

Managed high-DPI rendering with device pixel ratio scaling, used offscreen / intermediate canvases for multi-step rendering pipelines, and worked directly with ImageData, alpha channels, blend modes, filters, procedural noise, and pixel-level transformations.