Free SEO, Web Development & Online Tools

Free online tools for SEO, web development, content writing, and website performance optimization — all built for your browser.

23 tools
SEO

AI Visibility Checker — Free AEO Readiness Score Tool

Check your website's AI search visibility score in 3 minutes. Get a personalized GEO readiness report with actionable tips to appear in ChatGPT, Perplexity, and AI Overviews.

Development

Free Base64 Encoder & Decoder — Encode & Decode Base64 Strings Online

Encode text to Base64 or decode Base64 strings instantly. Free online Base64 encoder decoder for developers working with data encoding, API tokens, and image conversion.

Writing

Free Case Converter — Convert Text Between UPPER, lower, Title & More Online

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and more. Free online case converter for writers, developers, and SEO professionals.

Performance

Free Color Contrast Checker — WCAG Accessibility Checker for Web Design

Check color contrast ratios between foreground and background colors per WCAG 2.1 AA/AAA standards. Ensure your website meets accessibility guidelines for all users.

Development

Free Color Converter — HEX to RGB to HSL Converter with Live Preview

Convert colors between HEX, RGB, and HSL formats with a live color preview. Copy converted values. Free color converter tool for web developers and designers.

Performance

Free CSS Minifier — Minify & Compress CSS Online Instantly

Minify CSS code instantly to reduce file size and improve website load speed. Free online CSS minifier for web developers optimizing Core Web Vitals and page performance.

SEO

Free Domain Age Checker — Check Domain Registration Date & WHOIS Lookup

Check domain age, registration date, expiry date, and registrar for any domain. Free WHOIS lookup tool for domain research and SEO.

Development

Free HTML Entity Encoder & Decoder — Encode & Decode HTML Entities Online

Encode special characters to HTML entities or decode HTML entities back to readable text. Free online HTML entity encoder decoder for web developers and content creators.

SEO

Free HTTP Header Checker — Check Website HTTP Headers Online

Check HTTP response headers for any URL instantly. Free online HTTP header checker for SEO professionals, web developers, and security auditors analyzing website configurations.

Performance

Free Image Compressor — Reduce JPEG, PNG & WebP File Size Without Losing Quality

Compress and optimize images for web performance. Reduce image file size by up to 80% while maintaining quality. Improve Core Web Vitals and page load speed.

Development

Free JSON Formatter & Validator — Format, Validate & Beautify JSON Online

Format, validate, and beautify JSON data instantly. Free online JSON formatter with syntax highlighting, error detection, and collapsible tree view for developers.

SEO

Free Keyword Density Checker — Analyze Word Frequency & SEO Content Optimization

Check keyword density and word frequency in your content instantly. Identify keyword stuffing, optimize content for SEO, and improve topical relevance with our free keyword density analyzer.

Writing

Free Lorem Ipsum Generator — Generate Placeholder Text for Designs & Layouts

Generate Lorem Ipsum placeholder text instantly for your designs, mockups, and layouts. Free generator with word, sentence, and paragraph modes for designers and developers.

SEO

Free Meta Tag Generator & SEO Tag Creator — Title, Description & OG Tags

Generate optimized HTML meta tags for SEO including title tags, meta descriptions, Open Graph tags, and Twitter Cards. Free online meta tag generator tool for better search rankings.

Security

Free Password Strength Meter — Check & Generate Secure Passwords

Test password strength in real-time with our interactive meter. Generate strong, secure passwords with configurable length and character types. Free cybersecurity tool.

SEO

Free Schema Markup Generator — JSON-LD Structured Data Creator for SEO & Rich Snippets

Generate JSON-LD structured data schema for web pages. Create FAQ, LocalBusiness, Article, BreadcrumbList, and Product schema markup for rich snippets and AI search visibility.

Security

Free SSL Checker — Verify HTTPS Certificate Validity & Website Security Status

Check SSL certificate details for any domain instantly. Verify certificate validity, expiry date, issuer information, and HTTPS security configuration for your website.

Development

Free Timestamp Converter — Convert Unix Timestamps to Dates & Vice Versa

Convert Unix timestamps to human-readable dates and convert dates to Unix timestamps instantly. Free online timestamp converter for developers working with APIs and databases.

Development

Free URL Encoder & Decoder — Encode & Decode URLs and Query Parameters Online

Encode and decode URLs, query parameters, and URI components instantly. Free online URL encoder decoder tool for web developers and SEO professionals.

Development

Free UUID Generator — Generate UUID v4 & v7 Identifiers Online

Generate random UUIDs (Universally Unique Identifiers) instantly. Free online UUID v4 and v7 generator for developers working with databases, APIs, and distributed systems.

Marketing

Free Website Cost Calculator — Estimate Your Project Budget Online

Get an instant estimate for your website project. Answer a few questions about your requirements and get a realistic cost range based on industry benchmarks.

Writing

Free Word Counter — Count Words, Characters & Reading Time Online

Count words, characters, sentences, and paragraphs in any text instantly. Free online word counter with real-time statistics for writers, students, and SEO professionals.

Marketing

Hisar Digital Readiness Checker — Free Online Business Audit Tool

Check your Hisar business's digital readiness score in 2 minutes. Get a personalized report with actionable recommendations to grow your online presence.

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