# Scult Tools

> Free tools that do the boring work for you

Free online tools plus a verified AI prompt library — SEO, business, developer and design utilities, and copy-paste prompts for ChatGPT, Claude, Cursor, Midjourney and more. Built by Scult, an AI-first digital agency. 13 of 15 tools run entirely in your browser. No signup on any of them. Full policy: https://tools.scult.in/privacy

## Tools

### SEO
- [Schema Markup Generator (JSON-LD)](https://tools.scult.in/seo/schema-markup-generator): Generate valid JSON-LD structured data for Article, Product, LocalBusiness, Event and five more types — with live output and warnings for missing Google-required properties.
- [FAQ Schema Generator](https://tools.scult.in/seo/faq-schema-generator): Turn your questions and answers into valid FAQPage JSON-LD, plus a paste-ready visible HTML block. Flags duplicates, empty answers and text Google would truncate.
- [UTM Campaign URL Builder](https://tools.scult.in/seo/utm-builder): Build consistent, correctly encoded UTM tracking URLs for Google Analytics. Saves your conventions locally so every campaign is tagged the same way.
- [Marketing ROI Calculator](https://tools.scult.in/seo/marketing-roi-calculator): Calculate campaign ROI and ROAS together, with gross margin and hidden costs in the maths — so a 3× ROAS that quietly loses money cannot slip past you.
- [Website Speed Test](https://tools.scult.in/seo/website-speed-test): Run Google’s own Lighthouse on any page and get a verdict, not a wall of numbers: Core Web Vitals against real thresholds, plus the five fixes worth doing first.

### Business
- [Free Invoice Generator](https://tools.scult.in/business/invoice-generator): Create a clean, professional invoice in your browser and print it straight to PDF. Line items, GST or VAT, percentage or flat discounts, eight currencies — and nothing you type is ever uploaded.
- [Business Name Generator](https://tools.scult.in/business/business-name-generator): Generate brandable business name ideas from one or two keywords — five naming styles, honest pronounceability scoring and a local shortlist. Free, instant, no sign-up.
- [Slogan Generator — Free Tagline Maker](https://tools.scult.in/business/slogan-generator): Generate ten brandable slogans per click from hand-written template banks in five tones. Save a shortlist and check every line against Google Ads character limits.
- [Email Signature Generator](https://tools.scult.in/business/email-signature-generator): Design a professional email signature and copy it straight into Gmail or Outlook. Three layouts, brand colour, social links — built as bulletproof table HTML.

### Developer
- [JSON Formatter & Validator](https://tools.scult.in/dev/json-formatter): Format, minify and validate JSON with error messages that tell you the line and column. Runs locally — safe for payloads you should not paste into a website.
- [QR Code Generator (with UPI)](https://tools.scult.in/dev/qr-code-generator): Generate a high-resolution QR code for a link, text, WiFi network or UPI payment. Downloads as PNG or SVG, generated locally with no tracking redirect.
- [Favicon Generator](https://tools.scult.in/dev/favicon-generator): Make a complete favicon set — favicon.ico, PNGs and apple-touch-icon — from an image, text or emoji. Everything is generated in your browser; nothing uploads.

### Productivity
- [Word Counter — Words, Characters & Reading Time](https://tools.scult.in/productivity/word-counter): Count words, characters, sentences and reading time live as you type. Unicode-accurate counts, keyword density and platform limits, all in your browser.

### Design
- [Colour Palette Generator](https://tools.scult.in/design/color-palette-generator): Build a harmonious palette from one colour using OKLCH, so every step is perceptually even. Includes tints, shades and an automatic WCAG check on each swatch.

### GEO / AEO
- [AI Visibility Checker](https://tools.scult.in/geo/ai-visibility-checker): Check whether ChatGPT, Claude, Perplexity and Google AI can crawl and understand your site. Free 0–100 visibility score with specific fixes — no email gate.

## Guides
- [How to Make Your Website Visible to AI Search — A Practical Checklist](https://tools.scult.in/guides/ai-search-visibility-checklist): A checklist for AI search visibility: robots.txt rules for GPTBot and ClaudeBot, an llms.txt file, structured data, and the on-page basics AI engines cite.
- [JSON-LD Structured Data, Explained Simply](https://tools.scult.in/guides/json-ld-structured-data-basics): A plain-English guide to JSON-LD: what it does, the schema.org types that matter, how to validate it, and the FAQPage visibility rule.
- [What Every Invoice Needs — A Guide for Indian Freelancers and Small Businesses](https://tools.scult.in/guides/invoice-essentials-for-indian-freelancers): The fields a valid invoice needs, the India-specific basics (GSTIN, CGST/SGST vs IGST, sequential numbering) and the mistakes that get invoices paid late.

## Prompt Library
- [Prompt Library](https://tools.scult.in/prompts): 254 free, dated and version-verified prompts for ChatGPT, Claude, Cursor, Midjourney and more.

### AI Models & Assistants
- [ChatGPT](https://tools.scult.in/prompts/chatgpt): General-purpose ChatGPT prompts that survive model updates. (12 prompts)
- [Claude](https://tools.scult.in/prompts/claude): Prompts built for how Claude actually parses structure. (12 prompts)
- [Claude Code](https://tools.scult.in/prompts/claude-code): CLAUDE.md templates, constraint blocks and review rubrics. (12 prompts)
- [Cursor](https://tools.scult.in/prompts/cursor): .cursorrules files and agent-mode prompts for Cursor. (12 prompts)
- [GitHub Copilot](https://tools.scult.in/prompts/github-copilot): Repository instructions and chat prompts for Copilot. (12 prompts)
- [Gemini](https://tools.scult.in/prompts/gemini): Prompts for Gemini chat, long context and multimodal input. (12 prompts)
- [Perplexity](https://tools.scult.in/prompts/perplexity): Research and source-checking prompts for Perplexity. (12 prompts)
- [AI Companions & Personas](https://tools.scult.in/prompts/ai-companions): Persona-design and role-play scenario prompts for companion apps. (8 prompts)

### Development
- [AI Agents & RAG](https://tools.scult.in/prompts/ai-engineering): Prompts for building agents, RAG pipelines and support bots. (8 prompts)
- [React](https://tools.scult.in/prompts/react): Component, hook and state-management prompts for React. (12 prompts)
- [Next.js](https://tools.scult.in/prompts/nextjs): App Router, caching and rendering-strategy prompts. (12 prompts)
- [Python](https://tools.scult.in/prompts/python): Scripting, data and API prompts for Python work. (12 prompts)
- [Build Apps Without Code](https://tools.scult.in/prompts/no-code-apps): Lovable, Bolt.new, v0 and Replit Agent prompts. (8 prompts)

### Marketing & SEO
- [SEO & GEO/AEO](https://tools.scult.in/prompts/seo-geo): Search optimization prompts for Google and AI answer engines. (18 prompts)
- [Ads & Campaigns](https://tools.scult.in/prompts/ads): Ad copy, campaign briefs and UTM-planning prompts. (8 prompts)
- [Sales & Outreach](https://tools.scult.in/prompts/sales): Cold outreach, follow-up and objection-handling prompts. (12 prompts)
- [LinkedIn](https://tools.scult.in/prompts/linkedin): Post, profile and thought-leadership prompts for LinkedIn. (12 prompts)

### Design
- [Brand & Identity](https://tools.scult.in/prompts/branding): Naming, slogan and visual-identity brief prompts. (8 prompts)
- [Decks & Presentations](https://tools.scult.in/prompts/presentations): Gamma and Canva prompts for decks and visual documents. (8 prompts)

### Business
- [Startup & Strategy](https://tools.scult.in/prompts/startup): Idea validation, pitch and strategy prompts for founders. (12 prompts)
- [Business Ops & Client Comms](https://tools.scult.in/prompts/business-ops): Proposals, invoicing language and client-communication prompts. (8 prompts)

### Content Creation
- [Everyday Writing](https://tools.scult.in/prompts/writing): Emails, resumes and everyday writing prompts. (8 prompts)

### Image Generation
- [Midjourney](https://tools.scult.in/prompts/midjourney): V7-era natural-language and parameter prompts. (2 prompts)
- [Nano Banana](https://tools.scult.in/prompts/nano-banana): Product-photo and editing prompts for Gemini’s image model. (2 prompts)
- [Flux](https://tools.scult.in/prompts/flux): Positive-description prompts for Flux models. (2 prompts)
- [Ideogram](https://tools.scult.in/prompts/ideogram): Text-in-image and typography prompts for Ideogram. (2 prompts)

### Video & Audio
- [Veo](https://tools.scult.in/prompts/veo): Layered video briefs with native audio for Veo. (2 prompts)
- [Kling](https://tools.scult.in/prompts/kling): High-motion and physics-heavy video prompts for Kling. (2 prompts)
- [Runway](https://tools.scult.in/prompts/runway): Reference-driven and character-consistent prompts for Runway. (1 prompt)
- [Music & Voice](https://tools.scult.in/prompts/ai-audio): Suno and ElevenLabs prompts for music and voice design. (3 prompts)

## About this site
- [About](https://tools.scult.in/about): Who builds Scult Tools and why they are free. Built by Scult, an AI-first digital agency in Noida, Delhi NCR — these are the utilities our own delivery team uses.
- [Privacy](https://tools.scult.in/privacy): A plain-English table of exactly which Scult Tools send data over the network and which run entirely in your browser. No accounts, no file uploads, no dark patterns.
- [Terms of Service](https://tools.scult.in/terms): The terms for using Scult Tools: no accounts, you own what you generate, tools are provided as-is, and calculators are aids — not legal, tax or financial advice.
- [Frequently Asked Questions](https://tools.scult.in/faq): Straight answers about Scult Tools: whether it is really free, which tools run in your browser, how AI assistants may use this site, and where to send requests.
- [Contact](https://tools.scult.in/contact): How to reach Scult Tools — report a bug or a wrong calculation, ask about client work, or find us on LinkedIn, Instagram and X.
- [Security](https://tools.scult.in/security): What this site actually does for security: client-side tools that transmit nothing, SSRF-blocked server tools, the real response headers, and how to report a vulnerability.
- [Accessibility](https://tools.scult.in/accessibility): What Scult Tools does for keyboard, screen-reader and low-vision users, the one audit we have not done yet, and how to report an accessibility issue.
- [Changelog](https://tools.scult.in/changelog): What changed on Scult Tools and when — site-wide updates plus a per-tool last-updated list generated straight from the tool registry, not hand-typed.
- [Roadmap](https://tools.scult.in/roadmap): What is live on Scult Tools today, the directions we are weighing next, and how we decide when a tool gets retired instead of left to rot.
- [Brand & Press Kit](https://tools.scult.in/brand): Logos, boilerplate copy and company facts for Scult Tools, for press and partners who want to cite or link to the site correctly.
- [SEO, GEO & AEO Glossary](https://tools.scult.in/glossary): Plain-English definitions of SEO, GEO and AEO terms — AI crawlers, robots.txt, llms.txt, structured data, Core Web Vitals — matched to how our own tools check each one.
- [Tool Collections](https://tools.scult.in/collections): Curated bundles of Scult Tools grouped by what you are actually trying to do — GEO/AEO, SEO, freelance paperwork, developer utilities, and design and writing.
- [Sitemap](https://tools.scult.in/sitemap): A human-readable directory of every page on this site, grouped by section.

## Machine-readable
- [XML sitemap](https://tools.scult.in/sitemap.xml): every URL on the site with a real last-modified date.
- [robots.txt](https://tools.scult.in/robots.txt): explicit allow rules for GPTBot, ClaudeBot, PerplexityBot and the rest of the AI crawler roster.
- [llms-full.txt](https://tools.scult.in/llms-full.txt): the same map, with full tool and guide detail inlined for a single-fetch context load.