Every tool
you need.
Free forever.
AI prompts, SEO tools, writing utilities, calculators and more. Built for professionals who want results in seconds.
Task: Write a comprehensive blog post covering the top ranking factors for 2025...
Format: 1,500 words, H2 subheadings, bullet points...
Free tools,
ready to use today
AI Prompt Generator
Expert prompts using RISEN, STAR & Chain-of-Thought frameworks.
Word Counter & Readability
Real-time word count, readability score and AI grammar fixer.
Meta Description Generator
5 meta descriptions with live SERP preview and CTR scoring.
Email Subject Tester
Score subject lines live with spam detection and AI alternatives.
Hashtag Generator
AI hashtags for Instagram, TikTok, LinkedIn & X in seconds.
Blog Title Generator
10 click-worthy title variations — SEO, listicle, how-to & story angles.
Password Generator
Cryptographically secure passwords with custom length & options.
QR Code Generator
QR codes for URLs, WiFi, email & more. PNG & SVG download.
VAT Calculator
Add or remove VAT for 40+ countries with standard & reduced rates.
JSON Formatter
Format, validate & beautify JSON with syntax highlighting.
Invoice Generator
Professional invoices with VAT, discounts & PDF download. No watermark.
Paraphrasing Tool
Rewrite text with AI in 6 modes — Formal, Academic, Creative & more.
Grammar Checker
Fix grammar, spelling & punctuation. Every correction explained.
Text Summarizer
Summarize any text in 4 modes — paragraph, bullets, takeaways & executive.
Case Converter
10 modes: UPPER, lower, Title, camelCase, PascalCase, snake_case & more.
Lorem Ipsum Generator
Placeholder text — paragraphs, sentences, words or list items with HTML.
Cover Letter Generator
AI cover letters in 4 tones — Professional, Enthusiastic, Concise & Creative.
Character Counter
Live character count with progress bars for Twitter, Instagram & LinkedIn.
Brand Forge AI
AI-powered naming logic for startups. generate premium names with domain & TM authority signals.
VibeSEO YouTube Engine
AI SEO engine — generate high-ranking tags & description hooks with GPT-4o analytics.
SignatureCraft Pro
Create professional HTML email signatures for Gmail, Outlook & Apple Mail. 4 templates, custom colours, instant copy.
CSS Gradient Builder
Visual CSS gradient editor — linear, radial & conic. 12+ curated presets. Copy production-ready CSS in one click.
Colour Contrast
Check your colour combinations against WCAG 2.1 accessibility guidelines for AA and AAA compliance.
Favicon Generator
Generate perfectly sized standard favicons from text or emoji. Creates PNGs, Apple Touch Icons, and more in seconds.
Base64 Converter
Instantly encode or decode Base64 strings. Runs completely client-side for absolute data privacy and security.
UTM Builder
Generate perfectly structured monitoring links with UTM parameters to attribute traffic flawlessly in Google Analytics.
Markdown Editor
Write Markdown with real-time visual previews and instantly export standard semantic HTML for any CMS.
Regex Tester
Visually debug Regular Expressions on the fly with syntax highlighting, live indexing, and infinite loop protection.
SQL Formatter
Beautify raw, minified database queries into perfectly indented, readable syntax with multi-dialect support.
Epoch Converter
Instantly translate Unix epoch integers into formatted dates across timezones.
Tip Calculator
Calculate tips and split bills with tipping customs for 20+ countries, service presets and rounding.
Mortgage Calculator
Monthly payments, total interest, and full amortisation schedule. Repayment and interest-only. 15 currencies.
Percentage Calculator
Six calculators in one: find a percentage, calculate increase/decrease, percentage change, and percentage difference.
Salary Calculator
Calculate take-home pay after tax. Full UK PAYE 2024/25 and US Federal 2024 calculations with complete deductions breakdown.
AI Color Palette Generator
Describe your brand or project in words and get a perfect 5-color palette with hex codes, CSS variables and Tailwind config.
Age Calculator
Find your exact age in years, months, days and hours. Zodiac sign, generation, days to next birthday, and life progress.
More tools dropping every week
All free, no account needed. 30 live and counting.
Results in three steps
Pick a tool
Choose from 5 live tools — AI prompts, SEO, writing, social media and more. No account, no paywall.
Enter your content
Type your topic, paste your text, or fill in the fields. Every tool is designed to be used in under 30 seconds.
Get instant results
GPT-4o generates your output in seconds. Copy it, tweak it, use it. No waiting, no friction, no cost.
Built different.
Instant results
No loading screens. Results appear as you type or generate — powered by the fastest AI models available.
No signup ever
We will never ask for your email, credit card, or account. Use any tool, free, forever — no strings attached.
GPT-4o powered
Every AI tool runs on GPT-4o — the same model professionals pay $20/month for. You pay absolutely nothing.
New tools weekly
60 tools in the pipeline. One or two drop every week. Bookmark ToolStack and come back — it keeps getting better.
Latest Insights &
GEO Strategies
The 2026 SEO Checklist for Content Marketers
Search has changed. This is the definitive 10-point checklist for ranking in the age of Generative Engine Optimization.
How to Beat the ATS Algorithms with AI
Job hunting in 2026 requires more than a simple PDF. Learn how to optimize your cover letter for AI hiring systems.
Utility Keywords: The Secret to Passive Income
Informational content is hard to monetize. Utility content is a goldmine. Learn why building free tools is the ultimate SEO pivot.
Is your brand invisible
to AI search?
AdvertsGPT scans your website across 10 AI models in 60 seconds — and shows you exactly how to rank in AI search before your competitors do.
10+
AI models scanned
60s
Full audit
Free
No credit card