Sigil is a desktop tool that pairs a chat interface with a live SVG canvas. You describe what you want. An AI design agent builds it — with real vector geometry, not raster images.
Current AI tools produce raster images that look impressive but can't be used for actual logo delivery. You still have to recreate everything in Illustrator.
ChatGPT and Midjourney generate PNGs. You spend hours recreating them as clean SVGs in Illustrator just to get a usable starting point.
Client asks for "a rounder version" or "try it in navy." Each variation means manual work in Illustrator — adjusting paths, colors, exporting again.
Delivering a brand kit means exporting 20–30+ files: light/dark, CMYK/RGB, multi-size PNGs, favicons, EPS for print. It's repetitive and error-prone.
Configuring bleed, trim marks, CMYK profiles, and safe zones for print vendors is tedious and hard to get right without deep prepress knowledge.
Sigil's AI agent works directly on an SVG scene graph using semantic design operations: boolean unions, path editing, bezier curves, typography. The output is clean, production-grade vector geometry that opens perfectly in Illustrator. No raster-to-vector conversion needed.
Describe what you want in natural language. The AI builds it in real-time on a live vector canvas. Upload sketches, brand guidelines, or reference images — the agent sees and understands them.
Type it, paste it, or drop a PDF of the client brief. Upload sketches, mood boards, or competitor logos — the agent sees and interprets them all.
The agent constructs the logo using boolean operations, bezier paths, and typography — the same techniques you'd use in Illustrator. You see every step happen on the canvas in real-time.
"Make it rounder." "Try a serif." "Tighten the spacing." You direct the design through natural language — or click and drag elements directly on the canvas. Both work.
A separate AI critic evaluates every design pass for scalability (does it read at 16px?), alignment, contrast, and craft. You only see the result once it passes quality gates.
Generate a complete brand asset kit — all variations, all formats, all sizes — in one pass. Open directly in Illustrator for final polish. Export print-ready PDFs with bleed and CMYK profiles.
Every feature is designed around the real workflow of freelance logo designers — not generic AI image generation.
A Claude-powered agent with deep logo design expertise. It reasons about composition, typography, and brand identity — then executes through real vector operations. Opinionated, not generic.
Powered by Paper.js. Boolean operations, bezier paths, gradients — everything renders as clean vector geometry. Click and drag to move, resize, and rotate elements directly.
Extend paths, join segments, edit individual bezier handles, smooth curves, simplify geometry. The agent can do the precise curve work that Illustrator's Pen Tool enables.
One-click "Open in Illustrator" with preserved layers and groups. Edit in Illustrator, save, and Sigil detects the changes and offers to import them back. Bidirectional.
A separate AI evaluates every design pass: does it scale to favicon size? Are elements aligned? Do colors meet contrast standards? Catches issues before you see the result.
Drop in sketches, PDFs, mood boards, reference logos, or text briefs. The agent sees images, reads documents, and imports SVGs directly into the canvas.
Define your export profile once: variations (full-color, monochrome, reversed, icon-only) × formats (SVG, PNG, JPEG, PDF, EPS, WebP, ICO) × configurations (sizes, DPI, color modes). Sigil generates 30+ files in a single batch. Includes predefined templates for Digital, Print, and Social Media kits.
Chat-assisted print configuration. "Business card, 3mm bleed, CMYK FOGRA39." Live preview with bleed zones and trim marks. Auto-validates for thin strokes, missing outlines, and color mode issues.
Split the canvas to compare 2–4 independent variants side by side. Synchronized zoom and pan. "Try it in blue" creates a fork — both versions visible at once.
Define your export profile once, then batch-generate everything. No more exporting 30 files one at a time.
We're not replacing your design skills — we're eliminating the mechanical work around them.
It doesn't spit out 50 generic logos from a template. It's a design tool with an AI collaborator that builds real vector geometry from your creative direction.
Sigil accelerates ideation and construction. Final polish, complex compositions, and client-specific tweaks still happen in Illustrator. The two sync seamlessly.
Sigil does logo design — marks, wordmarks, and brand asset kits. It doesn't do multi-page layout, print design, or InDesign-style work. Focused and sharp.
The target user is a professional freelance designer. The AI is an expert assistant, not a replacement for design skill and judgment.
We're building Sigil for freelance logo designers. Before we lock in the feature set, we want to know what matters most to you.
Does the core concept — chat interface + live SVG canvas with an AI design agent — match how you'd want to work? What would you change about the interaction model?
Of the features listed, which three would make you most likely to try the tool? Which feel unnecessary?
How important is the Illustrator sync to your workflow? Would you use Sigil as a starting point and finish in Illustrator, or would you want to do everything in Sigil?
The Brand Asset Kit export — is this a major time-saver for you? What formats and variations do you deliver to clients most often?
What's the most tedious part of your current logo design workflow that we haven't addressed?
Would you join a private beta with 20 designers to test Sigil before launch? What would make that worth your time?