Small, fast, useful. No login, no email gate, no ads, no paywalled results.
Nothing you submit is stored beyond a short cache.
AI Visibility Checker
See whether ChatGPT, Claude, and Perplexity can actually read your site
AI visibilityrobots.txt AI Checker
Test your robots.txt against every AI crawler that matters
AI visibilityllms.txt Generator
Generate a spec-correct llms.txt and llms-full.txt for any site
AI visibilityMarkdown for Agents
Turn your pages into clean Markdown you can host for AI agents to read
Structured dataJSON-LD Validator
Check your structured data against Schema.org and what search engines accept
Structured dataJSON-LD Generator
Build valid schema markup from a URL, then paste it into your page
Social and sharingSocial Preview Checker
See how your link renders on X, LinkedIn, Slack, and Google before you post it
Site qualityFavicon Checker
Find out whether your favicon actually loads, or just looks declared
Site qualityTech Stack Detector
Find the platform, theme, apps, and analytics behind any site
Site qualityReview like Paul Graham
Get your page judged on clarity, a specific user, and plain language
Site qualityReview like Steve Jobs
Judge your page on focus, simplicity, and what you could remove
Site qualityReview like Peter Thiel
Monopoly or commodity, 10x or incremental, secret or consensus
Site qualityReview like Elon Musk
Question the requirement, delete the part, and count the steps to value
Site qualityReview like Travis Kalanick
Time to first value, form friction, and both sides of a market
Site qualityLookalike Test
See how your page's structure and copy differ from the sites you admire
CampaignsUTM Builder
Build campaign URLs on one convention, and see the channel each will land in
AssetsFull Page Screenshot
Capture any page end to end. No watermark, no extension
AssetsAlt Text Generator
Write accurate alt text for a whole page of images in seconds
AssetsMD5 Hash Generator
Hash any text to MD5, or call the same endpoint from a script
AssetsMarkdown Viewer
Open and read any Markdown file. Nothing leaves your browser
Website Launch Checklist
An interactive pre-launch checklist you can share with a client
Coming soonEvery tool here is also an MCP tool and an HTTP endpoint. One URL, no account, no API key.
claude mcp add --transport http superflow https://usesuperflow.ai/api/mcpSetup, tool list, and API reference
Superflow is a review and QA product for websites. Agencies point our agents at a site, the agents check every page against the agency's own rules, the team approves, and then the client signs off without needing a login.
Each of these tools does one small piece of that work, once, on one page, for free. If the result is useful, the product is the same idea applied continuously to every page of every site you ship. If it is not useful, you have still had a free tool with no email gate, which is more than most of the alternatives offer.