Free tools for AI projects, SEO and AEO

Convert PDF, Word, HTML, Excel, PowerPoint and CSV files into clean Markdown for docs, RAG pipelines and AI-readable pages. Runs in your browser; files are never uploaded.

Turn Markdown into a Word document, PDF, HTML page or plain text, with a live preview. Handles tables, task lists and code blocks. Runs in your browser.

Build an llms.txt file that points AI assistants to your best pages. Import URLs from your sitemap, group them into sections and download a valid file.

Generate valid JSON-LD for FAQPage, Article, Organization, HowTo and BreadcrumbList, with live checks for missing and malformed fields.

Count words, characters, sentences and paragraphs as you type, with reading and speaking time and keyword density. Runs in your browser.

Format, validate and minify JSON with exact error locations, key sorting and a choice of indent. Runs in your browser; nothing is uploaded.

Compare two texts word-by-word or line-by-line and see exactly what was added, removed or unchanged. Runs in your browser.

Encode or decode URL (percent) encoding and Base64 in either direction, with a URL-safe Base64 option and correct Unicode handling.

Test a regular expression against your own text with live match highlighting, capture groups and a replace preview.

Pick the type of AI system you're building, its complexity, and rough scale. Get a realistic cost and timeline range based on what similar engagements have actually taken.

Paste a prompt, see its estimated token count and per-request cost across major model providers side by side, so you can compare before committing to an architecture.

Choose which AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended and others) may read your site, and get a ready-to-paste robots.txt.

Check whether a page answers its main question in the opening lines, with heading structure and length checks AI answer engines tend to favor.

Preview how a title, meta description and opening paragraph could appear in search results and AI answer cards, with length warnings.

Paste a document and see how different chunk sizes and overlaps split it, comparing naive and structure-aware chunking strategies.