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Free AI Tools

56 free AI tools for founders, marketers, developers, and support teams — AI generators, Markdown and PDF converters, document chat, and SEO utilities. No accounts, no limits, and nothing you enter is ever stored.

Featured

AI Chatbot Name Generator

Name your AI support assistant something memorable.

AI Business

AI FAQ Generator

Turn a product description into ready-to-use FAQs.

AI Customer Support

AI Support Reply Generator

Draft polite, on-brand replies to customer messages.

AI Customer Support

Chatbot ROI Calculator

Estimate how much an AI chatbot could save your team.

Business & SEO

All tools

AI Business Name Generator

Generate catchy, brandable business names in seconds.

AI Business

AI Chatbot Name Generator

Name your AI support assistant something memorable.

AI Business

AI Slogan Generator

Punchy taglines and slogans for your brand.

AI Business

AI FAQ Generator

Turn a product description into ready-to-use FAQs.

AI Customer Support

AI Support Reply Generator

Draft polite, on-brand replies to customer messages.

AI Customer Support

AI Product Description Generator

Compelling product descriptions that convert.

AI Writing

AI Email Subject Line Generator

High-open-rate subject lines for any email.

AI Writing

JSON Formatter & Validator

Format, validate, and minify JSON instantly.

Developer

Base64 Encoder / Decoder

Encode text to Base64 and decode it back.

Developer

UUID Generator

Generate random UUID v4 identifiers.

Developer

Hash Generator (SHA-256)

Generate SHA-256 / SHA-1 hashes of any text.

Developer

Password Generator

Create strong, random passwords instantly.

Utility

URL Slug Generator

Turn any title into a clean URL slug.

Utility

Word & Character Counter

Count words, characters, sentences and reading time.

Utility

JSON to Markdown Converter

Turn a JSON array into a clean Markdown table.

Markdown & Docs

Chatbot ROI Calculator

Estimate how much an AI chatbot could save your team.

Business & SEO

PDF to Markdown Converter

Turn any PDF into clean Markdown text.

Markdown & Docs

Word (DOCX) to Markdown Converter

Convert Word documents to clean Markdown.

Markdown & Docs

HTML to Markdown Converter

Paste HTML and get clean Markdown.

Markdown & Docs

XML to Markdown Converter

Turn XML into a readable Markdown outline.

Markdown & Docs

CSV to Markdown Table Converter

Convert CSV data into a Markdown table.

Markdown & Docs

RTF to Markdown Converter

Extract clean text from RTF as Markdown.

Markdown & Docs

Paste to Markdown

Paste rich text from anywhere and get Markdown.

Markdown & Docs

Notion to Markdown Converter

Move Notion content into clean Markdown.

Markdown & Docs

Google Docs to Markdown Converter

Convert a Google Doc to clean Markdown.

Markdown & Docs

Webpage to Markdown Converter

Turn any public URL into clean Markdown.

Markdown & Docs

AI Chat with Your Text

Paste any text and ask the AI questions about it.

AI Chat

AI Chat with Your Website Data

Enter a URL and ask the AI about the page.

AI Chat

AI Chat with Your Document

Upload a PDF or Word doc and ask questions.

AI Chat

AI Chat with Your PDF

Upload a PDF and ask the AI anything about it.

AI Chat

AI Chat with Your Word Document

Upload a Word doc and ask the AI questions.

AI Chat

AI Reply Generator

Draft a polished reply to any message in seconds.

AI Writing

AI Prompt Generator

Turn a plain goal into a powerful AI prompt.

AI Writing

AI Prompt Optimizer

Rewrite a weak prompt into a great one.

AI Writing

AI Answer Generator

Get a clear, well-organized answer to any question.

AI Writing

AI Email Response Generator

Write the perfect reply to any email.

AI Writing

AI Letter Generator

Generate formal or personal letters instantly.

AI Writing

AI Blog Title Generator

Get catchy, SEO-friendly blog titles.

AI Writing

AI SaaS Brand Name Generator

Find a short, brandable name for your SaaS.

AI Business

AI Chatbot Conversation Analysis

Analyze a support chat for sentiment and quality.

Business & SEO

Sitemap Finder & Checker

Find a website's sitemap in seconds.

Business & SEO

Sitemap Validator

Check that your XML sitemap is valid.

Business & SEO

XML Sitemap Generator

Turn a list of URLs into a valid XML sitemap.

Business & SEO

Sitemap URL Extractor

Extract every URL listed in a sitemap.

Business & SEO

Website URL Extractor

Pull every link from a webpage.

Business & SEO

Email Signature Generator

Create a clean, professional email signature.

Business & SEO

PDF to Text Converter

Extract plain text from any PDF.

Markdown & Docs

PDF Metadata Viewer

Inspect a PDF's hidden metadata.

Markdown & Docs

AI PDF Summarizer

Summarize any PDF or document in seconds.

AI Chat

AI PDF Translator

Translate a PDF or document into any language.

AI Chat

PDF to JSON Converter

Turn a PDF into structured JSON.

Markdown & Docs

PDF to HTML Converter

Convert a PDF into clean HTML.

Markdown & Docs

PDF to XML Converter

Convert a PDF into structured XML.

Markdown & Docs

PDF to CSV Converter

Extract PDF data into CSV rows.

Markdown & Docs

Markdown to PDF Converter

Turn Markdown into a downloadable PDF.

Markdown & Docs

HTML to PDF Converter

Convert HTML into a downloadable PDF.

Markdown & Docs

Frequently asked questions

Are these AI tools really free?

Yes. All 56 tools on Stellah.App are completely free with no sign-up, no account, and no usage limits.

Do I need to create an account?

No. Every tool works immediately with no login, email, or credit card.

Do you store my data or generated content?

No. Inputs and outputs are never stored, logged, or used for training. Many tools run entirely in your browser, and uploaded files are processed in memory only.

Can I use the results commercially?

Yes. Anything you generate is yours to use, including for commercial projects.

What is Stellah.App?

Stellah.App is an AI customer support platform that turns your website, documents, and FAQs into a 24/7 AI chatbot. The free tools showcase what the underlying AI can do.

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