FREE ONLINE TOOLS
Design Tools
Design tools for colors, CSS, UI QA, visual assets, social previews, algorithmic SVGs, patterns, and exportable design proof. The listed tools are indexable, linked from FastTool hubs, included in sitemap, and exposed in machine-readable discovery files.
PUBLIC DESIGN INDEX
13 Design tools
Accessibility Compliance Evidence Packet Studio Design
Build a scoped accessibility evidence packet from page inventory, audit notes, color pairs, forms, media, documents and public claims. Export WCAG issue ledger, page priority matrix, remediation sprint board, vendor email, exception memo, SVG heatmap, CSVs and JSON receipt.
Open toolFirst Screen Clarity Auditor for Tool UX Design
Audit a tool page's first screen for obvious action, input labels, CTA noise, result boundary and mobile clarity, then export a UX fix list.
Open toolFourier Epicycle Drawing Machine Design
Decompose a parametric drawing into Fourier epicycles, then render the rotating circles, reconstructed path, error metrics, coefficient CSV, SVG projection, Markdown brief and JSON receipt.
Open toolFractal Growth Tree Lab Design
Build a deterministic 3D fractal growth tree from branching rules, depth, angle, shrink and seed, then export branch ledger CSV, canopy SVG projection, growth brief and JSON receipt.
Open toolGenerative SVG Poster Synthesizer Design
Turn a brand, mood, palette, motif, headline, format, and seed into a deterministic SVG poster, design-token JSON, style prompt pack, and proof receipt.
Open toolImpossible Object Blueprint Studio Design
Generate strange deterministic impossible-object SVG blueprints from a concept, illusion family, palette and seed. Export SVG, motion CSS, geometry CSV, token JSON, prompt pack and proof receipt.
Open toolMobius Surface Topology Lab Design
Generate a parametric Mobius-style surface with twist, width and sampling controls, boundary diagnostics, mesh ledger CSV, SVG projection, Markdown brief and JSON receipt.
Open toolPhotogrammetry Capture Coverage 3D Planner Design
Plan a photogrammetry shoot with 3D camera rings, object coverage heatmap, blind-spot warnings, overlap score, shot-list CSV, SVG coverage map and JSON receipt.
Open toolReaction-Diffusion Surface Lab Design
Generate Gray-Scott reaction-diffusion patterns as a 3D heightfield surface with parameter diagnostics, pattern-energy metrics, CSV samples, SVG contour map, Markdown brief and JSON receipt.
Open toolTensegrity Force Structure Lab Design
Generate a 3D tensegrity prism with struts, cables, force-balance diagnostics, member ledger CSV, SVG projection, Markdown brief and JSON receipt.
Open toolVisual Attention Heatmap Studio Design
Upload or generate a screenshot and create a browser-only visual attention heatmap with hotspot ledger, PNG, SVG, CSV, Markdown brief and JSON receipt.
Open toolVoronoi Territory Growth 3D Lab Design
Generate a 3D Voronoi territory growth surface with seeded cells, ridge height, capture balance, boundary ledger CSV, SVG map, Markdown brief and JSON receipt.
Open toolWCAG Color Contrast Checker Design
Check foreground and background color contrast, see WCAG AA and AAA status, preview text, and copy accessible color suggestions.
Open toolQuality boundary
Use these tools for browser-first drafts, calculations, receipts, and exportable artifacts. For money, safety, legal, medical, regulated, or production-critical decisions, verify the output before acting.