# SynthQuery
> AI content intelligence platform — the most advanced and reliable AI content detector, readability analyzer, plagiarism checker, humanizer, and AI search brand monitor.

## What is SynthQuery?
SynthQuery is a comprehensive AI content intelligence platform used by SEO professionals, content teams, educators, agencies, and enterprises. It combines AI detection tools with brand monitoring across AI search engines (ChatGPT, Perplexity, Google AI Overviews, Bing Copilot, Claude).

## Core AI Detection & Writing Tools
- [AI Content Detector](https://synthquery.com/detect): Free ChatGPT, GPT-5, Claude & AI content detector with sentence-level heatmaps, attribution, and DeepScan mode. Supports 55+ languages.
- [AI Humanizer](https://synthquery.com/humanizer): Rewrite AI-generated text to sound natural and bypass AI detectors. 7 writing modes, readability targeting, side-by-side diff.
- [SynthRead Readability](https://synthquery.com/synthread): 20+ readability formulas (Flesch-Kincaid, Gunning Fog, SMOG, Dale-Chall, ARI, Coleman-Liau, and more).
- [Plagiarism Checker](https://synthquery.com/plagiarism): Check text similarity against billions of web sources. Supports 190+ languages.
- [Grammar Checker](https://synthquery.com/grammar): Fix grammar, spelling, and punctuation errors with AI-powered suggestions.
- [Paraphraser](https://synthquery.com/paraphraser): Rewrite text in multiple styles while preserving meaning.
- [Summarizer](https://synthquery.com/summarizer): Condense long text, URLs, or documents into concise summaries.
- [AI Writer](https://synthquery.com/writer): Generate SEO-optimized long-form content with AI.
- [Translator](https://synthquery.com/translator): Translate text across 100+ languages.
- [Word Counter](https://synthquery.com/word-counter): Character, word, sentence, paragraph counts with readability metrics.
- [Dictionary](https://synthquery.com/dictionary): Definitions, synonyms, pronunciation, and word usage.
- [AI Chatbot](https://synthquery.com/chat): AI-powered chat assistant with tool integrations.
- [AI Image Detector](https://synthquery.com/image-detect): Detect AI-generated and manipulated images (DALL-E, Midjourney, Stable Diffusion).
- [Background Remover](https://synthquery.com/bg-remove): Remove image backgrounds instantly with AI.
- [Citation Generator](https://synthquery.com/citation-generator): Generate citations in APA, MLA, Chicago formats.

## SEO & Schema Tools
- [SERP Preview](https://synthquery.com/serp-preview): Preview how your page appears in Google search results.
- [Meta Checker](https://synthquery.com/meta-checker): Analyze meta tags, Open Graph, and Twitter Cards.
- [FAQ Schema Generator](https://synthquery.com/faq-schema-generator): Generate FAQ structured data (JSON-LD).
- [How-To Schema Generator](https://synthquery.com/how-to-schema-generator): Generate HowTo structured data.
- [Product Schema Generator](https://synthquery.com/product-schema-generator): Generate Product structured data.
- [Organization Schema Generator](https://synthquery.com/organization-schema-generator): Generate Organization structured data.
- [Hreflang Tag Generator](https://synthquery.com/hreflang-tag-generator): Generate hreflang tags for international SEO.
- [Robots.txt Generator](https://synthquery.com/robots-txt-generator): Generate robots.txt directives.
- [XML Sitemap Generator](https://synthquery.com/xml-sitemap-generator): Generate XML sitemaps.
- [Keyword Density Calculator](https://synthquery.com/keyword-density-calculator): Analyze keyword density in text.
- [LSI Keyword Finder](https://synthquery.com/lsi-keyword-finder): Find latent semantic indexing keywords.

## Image Processing (85+ converters & editors)
Convert between JPG, PNG, GIF, WebP, HEIC, BMP, TIFF, SVG, PDF, ICO, PSD, EPS. Crop, resize, apply effects (blur, sepia, posterize, duotone, oil paint), remove backgrounds, create collages, extract frames from GIFs/videos, and more.

## Business & Finance Calculators (80+ tools)
ROI, CAC, CLV, ARR, MRR, break-even, markup, margin, COGS, conversion rate, CTR, CPC, CPM, CPA, CAGR, DCF, Amazon FBA fees, Shopify fees, Stripe fees, and many more.

## Company & Resources
- [Pricing](https://synthquery.com/pricing): Free, Starter ($12/mo), Pro ($29/mo), Expert ($79/mo), Enterprise (custom). Annual plans save 2 months.
- [API Documentation](https://synthquery.com/api-docs): REST API with OpenAPI 3.1 spec for all tools. API keys available on Pro+ plans.
- [Blog](https://synthquery.com/blog): Writing guides, SEO tips, AI detection insights, industry analysis.
- [FAQ](https://synthquery.com/faq): Frequently asked questions about SynthQuery tools and platform.
- [About](https://synthquery.com/about): About the team and mission.

## Technical Details
- Self-hosted on Hetzner VPS with Cloudflare CDN
- Next.js frontend with FastAPI ML backend
- AI detection uses RoBERTa-based ensemble model with sentence-level scoring
- Readability analysis runs locally (no external API dependencies)
- Privacy-first: text is not stored or used for training
- GDPR compliant with data export and deletion
- OpenAPI 3.1 specification at https://synthquery.com/api/openapi.json

## Contact
- Website: https://synthquery.com
- Support: Available through the platform