25+ Free Professional Tools
All tools are free to use. From VAT calculator to AI prompt generator — get started instantly without installation.
AI Prompt Generator
Generate professional AI prompts for ChatGPT, Claude and Midjourney. 30+ templates for marketing, code, content, SEO and more.
VAT Calculator
Calculate VAT amounts with Dutch rates (21%, 9%, 0%). Convert inclusive or exclusive VAT. With reference table.
Word Counter
Count words, characters, sentences and paragraphs. With reading time, keyword density analysis and Flesch-Kincaid readability score.
SEO Audit Tool
Analyze any website for SEO. Get a 0-100 score with detailed recommendations for title, meta tags, headings and more.
Meta Tag Generator
Generate meta tags, Open Graph and Twitter Card tags. With live Google SERP, Facebook and Twitter preview. Copy with one click.
Schema Markup Generator
Generate JSON-LD structured data for FAQ, Product, LocalBusiness, Article and more. Improve your SEO with rich snippets.
Robots.txt Generator
Create a robots.txt file with crawl rules per search engine and AI bot. Presets for WordPress, Shopify and Laravel.
JSON Formatter & Validator
Format, validate and minify JSON online. Syntax highlighting, error detection and download feature. Perfect for developers.
Regex Tester
Test regular expressions with real-time highlighting. Capture groups, common presets and regex cheat sheet included.
Markdown Editor
Write Markdown with live preview. Split-view, toolbar and copy instantly as HTML or Markdown source.
Base64 Encoder / Decoder
Encode and decode Base64 text and images. Drag & drop, auto-detection and data URI generation. 100% client-side.
Lorem Ipsum Generator
Generate placeholder text in Latin, Dutch or English. Paragraphs, sentences or words. Copy as plain text or HTML.
Color Palette Generator
Generate color palettes with complementary, analogous and triadic colors. Contrast checker (WCAG), export as CSS variables.
CSS Gradient Generator
Create CSS gradients visually. Linear, radial and conic. Multiple color stops, angle control and gallery with trending gradients.
Image Compressor
Compress images directly in your browser. Supports JPEG, PNG and WebP. Batch processing and format conversion. 100% privacy.
Favicon Generator
Generate favicons in all sizes from an image or emoji. Download as ZIP with HTML code. All sizes for browser, iOS and Android.
Hourly Rate Calculator
Calculate your hourly rate as a freelancer. Including tax, costs, VAT and benchmark comparison with other professions.
Margin Calculator
Calculate profit margin, markup and gross profit. Two calculation modes, visual breakdown and quick presets for common margins.
Quote Generator
Create professional quotes with per-line VAT calculation. Print-friendly design. Includes terms and notes.
Invoice Generator
Create professional invoices as PDF. Fill in your company and client details, add line items and download instantly.
IBAN Validator
Validate IBAN numbers for correctness. Automatically identify the bank, country and account number. Generate test IBANs.
Website Screenshot
Take screenshots of websites in desktop, tablet or mobile format. Download as PNG for presentations or social media.
QR Code Generator
Create QR codes for URLs, text, email, WiFi and vCards. Customize colors and size. Download as PNG or SVG.
Password Generator
Generate secure passwords with customizable length and characters. Cryptographically secure, instant copy.
Responsive Checker
See how your website looks on mobile, tablet and desktop. Test different devices and screen sizes in real-time.