Free tools for ai companies

JSON Formatter & Validator Validate and pretty-print model outputs and API payloads, with precise errors when a response is not valid JSON. CSV to JSON Converter Turn CSV datasets into JSON for prompts, evals and fine-tuning files, or flatten JSON back into a spreadsheet. Text Compare (Diff Checker) Compare two prompts or model outputs line by line and word by word to see exactly what changed. AI Crawler Checker See at a glance whether GPTBot, ClaudeBot, PerplexityBot, Google-Extended and other AI user agents are allowed. Many startups discover they block the very crawlers that c... robots.txt Tester Test specific paths against your robots.txt rules. You might allow marketing and docs pages while blocking the app, API playground and user-generated content. Robots.txt Generator Generate a clean robots.txt with separate rules for search and AI crawlers and a sitemap reference, instead of copying a template that blocks more than intended. Schema Markup Validator Validate Organization, SoftwareApplication and FAQ structured data. Clear entity information helps search engines and AI systems understand who you are and what the produ... Meta Tag Checker Check titles and meta descriptions on the homepage, pricing and use-case pages. Clear, specific descriptions help both search results and AI summaries describe the produc... Open Graph Checker Preview how launch links will look when shared. Confirm og:image, title and description are set before a Product Hunt, LinkedIn or X announcement. Image Resizer Use the Facebook and LinkedIn share preset (1200×630) and X post preset (1600×900) to produce correctly sized launch graphics in the browser. SPF Record Checker Before emailing a waitlist from a new domain, confirm SPF covers your email provider and stays under ten lookups. DMARC Record Checker Publish DMARC before launch. Gmail and Yahoo expect it from bulk senders, and it stops others spoofing your new brand in phishing emails. Favicon Generator Generate a full favicon set, apple-touch-icon and web manifest from the logo, or from one or two letters while the brand is still settling. Security Headers Checker Check HSTS, CSP and framing headers on the marketing site and app. Early enterprise pilots will often ask about basic web security. Image Compressor Compress product demo screenshots and diagrams to WebP so landing pages stay fast. Unreleased interface images are never uploaded. JWT Decoder Paste a JWT to see its header and claims in plain English, check when it expires, and optionally verify an HMAC signature with your secret, all inside your browser AI Content Visibility Checker Paste any page address to see whether AI search tools may fetch it, whether its text is in the HTML, and whether it is written so a passage can be quoted Keyword Grouping Tool Paste a keyword list or upload a CSV export, and group it into topics you can plan one page around, with intent buckets and summed volume, impressions and clicks Privacy Policy Generator Answer five short questions about your business, the data you collect and the tools you use, and get a starting-point privacy policy you can review, edit and publish llms.txt Checker & Generator Enter a website to validate its llms