One stack.
Many surfaces.
Stacklumen ships browser-based web tools, a client portal, a component library, and the app every client logs into — all under one umbrella, all designed to plug into the same workflow.
Kitlumen
Browser-based web tools. Thirteen of them, all live.
SEO + AEO Audit
Paste a URL. Get back a graded report on title, meta, canonical, Open Graph, JSON-LD, h1 structure, robots, sitemap, and llms.txt — everything that determines whether you show up in search and answer engines.
Open Graph Preview
Paste a URL — see how it renders in Slack, iMessage, Twitter, LinkedIn, Discord, and Google search. Spot the broken og:image before the launch tweet.
JSON-LD Generator
Fill a form, copy the JSON. Organization, FAQ, Product, Article, BreadcrumbList — every schema answer engines actually read.
Contrast Checker
Paste a foreground and background hex. Get the contrast ratio, AA/AAA pass status for normal + large text, and a one-click suggested fix.
robots.txt + llms.txt
Fill a form, get production-ready robots.txt and llms.txt — with GPTBot / ClaudeBot / Perplexity / Google-Extended allow rules pre-wired the way we use them.
Webflow Embed Sizer
Paste an embed. Get its real KB size, minified KB size, and whether it fits inside Webflow’s 50KB embed cap.
Products
The product suite, shipped.
Hublumen
Versioned file delivery, async approvals on staging URLs, milestones, Stripe-backed billing, signed proposals, and white-label workspaces. The portal product reserved for the full engagement.
Baselumen
Webflow embeds and React + TypeScript components, every one extracted from real Stacklumen client work. Live previews, KB-honest sizing, copy-out with usage notes.
Stacklumen AI
A Webflow-native co-builder that knows the patterns we ship and the embeds in Baselumen. Generates production-grade interactions instead of generic snippets.
Hub apps
Working surfaces, live and in use today.
Client Portal
Chat with the team, browse sales materials, manage personal tasks, track business info. Thin touch-surface today; the full portal experience tomorrow.
Tasks
Notes-style task list with keyboard-first input. Synced across your devices.
YourVision
Tell us about your project. Goal, audience, constraints, timeline, budget. We come back with a written scope and a real number.
Suggest a tool.
We build Kitlumen tools we’d use ourselves. If you’d use one we haven’t shipped yet, tell us. The ones with the most demand jump the queue.
Bring it all together.
If you need the company behind the ecosystem — Webflow sites, custom applications, paid advertising, ongoing retainers — start with a brief.