The Complete Free SEO & AI Tools List You Need in 2026

Audit title, description, and Open Graph tags on any live URL instantly.

Generate perfectly formatted meta title and description tags for any page.

Automatically crawl your site and generate a ready-to-submit XML sitemap.

Build a proper robots.txt file that guides search engine crawlers correctly.

Validate and test your robots.txt directives against any URL path.

Create JSON-LD structured data for rich results in Google Search.

Check canonical tags and spot duplicate-content issues across your pages.

Generate hreflang annotations for multilingual and international SEO.

Preview how your page listing will look in Google search results.

Check whether a URL is indexed and visible in Google's search database.

Find keywords your competitors rank for that your site is missing entirely.

Discover pages on your site with no internal links pointing to them.

Validate Open Graph and Twitter Card tags for perfect social previews.

Measure LCP, FID, and CLS scores that directly impact Google rankings.

Calculate the projected return on investment from your SEO campaigns.

Build comprehensive topical authority maps for any niche or industry.

Estimate organic traffic and see ranking trends for any website.

Generate a Google-ready disavow file to neutralize toxic backlinks.

Audit your site for Answer Engine Optimization readiness in AI-era search.

AI Search Optimization audit to rank in LLM-powered search engines.

Create an llms.txt file so AI crawlers understand your site's content.

Generate hundreds of keyword ideas from a single seed keyword.

Uncover low-competition, high-intent long-tail keywords for any topic.

Find all the questions people ask about your topic online.

Group related keywords into clusters to plan content silos effectively.

Check monthly search volumes for any keyword or phrase.

Detect over-optimized keyword density before Google penalizes your page.

Measure keyword usage frequency and ratio in your content.

Use AI to generate targeted keyword lists for any content topic or niche.

Build properly tagged UTM URLs to track campaign performance in Analytics.

Generate full-length, SEO-ready blog posts on any topic in seconds.

Write structured, well-argued essays for academic or professional use.

Generate professional, engaging emails for any purpose or audience.

Create scroll-stopping posts for LinkedIn, Twitter, Instagram, and more.

Condense long articles, reports, or papers into concise summaries.

Rewrite text in your preferred tone while preserving the original meaning.

Generate click-worthy SEO title tags optimized for search engines.

Create a structured business plan with executive summary and financials.

Generate academic research papers with proper structure and citations.

Create original stories, plot outlines, and narrative content on demand.

Draft compelling email newsletters that build audience loyalty and trust.

Create investor-ready pitch decks with slide-by-slide AI guidance.

Convert robotic AI output into natural, human-sounding writing.

Detect AI-generated text with accuracy — great for educators and editors.

AI-powered plagiarism detection to ensure content originality.

Upload any PDF and ask questions to extract insights instantly.

Test URLs for SQL injection vulnerabilities using real attack payloads.

Test your site for Cross-Site Scripting vulnerabilities automatically.

Simulate Cross-Site Request Forgery attacks to expose authentication flaws.

Check CORS policy headers and identify misconfigured access controls.

Detect CSS injection vulnerabilities that can lead to style-based attacks.

Check if a website appears on malware or phishing blacklists.

Run a full security posture assessment against common web attack vectors.

Test if your pages can be embedded in iframes by malicious third parties.

Search the CVE database for known vulnerabilities in software and libraries.

Identify web cache poisoning risks that can affect entire user populations.

Scan for XML External Entity injection vulnerabilities in your endpoints.

Automated penetration testing toolkit to find exploitable weaknesses.

Losslessly convert JPG images to transparent-capable PNG format.

Shrink image file sizes with modern WebP format for faster websites.

Convert iPhone HEIC photos to universally compatible JPG format.

Convert every page of any PDF into high-quality JPG images.

Convert Word documents to PDF with formatting and layout intact.

Transform spreadsheet CSV data into clean, structured JSON output.

Export JSON data objects into CSV spreadsheet format quickly.

Convert Markdown files to clean, valid HTML in one click.

Turn video clips into animated GIFs for social media and documentation.

Convert MKV video files to widely supported MP4 format.

Convert XML data structures into modern JSON format effortlessly.

Automatically convert plain CSS classes to Tailwind utility classes.

Write, run, and test Python code directly in your browser.

Execute JavaScript instantly — great for quick prototyping and testing.

Run PHP code snippets server-side without any local setup.

Write and execute SQL queries against sample databases in your browser.

Prettify and validate minified JSON data with syntax highlighting.

Test REST API endpoints with GET, POST, PUT, DELETE requests online.

Send GraphQL queries and inspect responses without any client software.

Build, test, and debug regular expressions with real-time match highlighting.

Decode and inspect JSON Web Token payloads, headers, and signatures.

Live HTML and CSS editor with real-time preview in your browser.

Describe what you need in plain English and get the SQL query instantly.

Describe your programming task and get working Python code in seconds.

Generate production-ready Dockerfiles for any language or framework.

Build valid Kubernetes deployment, service, and ingress YAML files.

Generate CI/CD pipeline configs for GitHub Actions, GitLab, and Jenkins.

Generate Ansible automation playbooks for server configuration tasks.

Create Infrastructure-as-Code Terraform configuration files quickly.

Generate boilerplate AWS Lambda function code for serverless applications.

Create GitHub Actions YAML workflow files for automated deployments.

Generate Grafana monitoring dashboard JSON configurations.

Open and read any PDF file instantly without downloading software.

View Excel spreadsheets with formulas and formatting preserved.

Open Word documents online and view them with rich formatting intact.

View 3D CAD models in IGES/IGS format with WebGL rendering.

Render and inspect OBJ 3D model files interactively in your browser.

Browse and inspect ZIP archive contents with a recursive folder tree.

Visualize JSON data in a collapsible, color-coded tree structure.

Open and browse CSV files in a clean, sortable table view.

View Photoshop PSD files in your browser — no Adobe subscription needed.

Count words, characters, sentences, and reading time in your text.

Convert text between UPPERCASE, lowercase, Title Case, and more.

Compare two pieces of text side by side and highlight differences.

Create beautiful word cloud visualizations from any text or document.

Analyze your content's Flesch-Kincaid score and readability grade level.

Translate text to and from Morse code with audio playback.

Convert text to Grade 1 Braille with visual dot-pattern display.

Turn typed text into realistic handwritten notes for a personal touch.

Reduce image file sizes without visible quality loss for faster websites.

Arrange multiple photos into beautiful collage layouts in seconds.

Convert any photo to black and white or grayscale instantly.

Apply Gaussian blur effects to images for privacy or creative effects.

Adjust brightness and contrast on any image with live preview.

Combine multiple images side by side or stacked into one file.

Generate customizable QR codes for URLs, text, WiFi, and more.

Audit your YouTube videos for SEO title, tags, and description quality.

Generate high-ranking YouTube tags using AI for any video topic.

Extract all hidden tags from any YouTube video URL to spy on competitors.

Download full-resolution thumbnails from any YouTube video.

Check where your YouTube videos rank for target keywords.

Find the unique Channel ID for any YouTube channel quickly.

AI-generated YouTube keyword suggestions tailored to your content niche.

Hash any text or file using the SHA-256 cryptographic algorithm.

Encode text or binary data to Base64 format for safe data transfer.

Decode Base64-encoded strings back to human-readable text.

Encode or decode messages using the classic Caesar shift cipher.

Encrypt and decrypt messages with the polyalphabetic Vigenère cipher.

Generate 1024–4096 bit RSA public/private key pairs securely.

Generate MD5, SHA-1, SHA-256, SHA-512 hashes from any input.

Simulate WWII-era Enigma machine encryption with configurable rotors.

Look up domain registration details, owner info, and expiry dates.

Query DNS records including A, AAAA, MX, CNAME, TXT, and NS.

Find out how old any domain is and its original registration date.

Check availability and registration status for hundreds of domains at once.

Validate your domain's DMARC policy record for email authentication.

Check your SPF email authentication records for errors and validity.

Estimate the market value of any domain name instantly.

Full-featured scientific calculator with trigonometry and logarithms.

Calculate monthly mortgage payments with amortization schedules.

Calculate percentage of, percentage change, increase, and decrease.

Calculate range, height, and flight time for projectile trajectories.

Solve voltage, current, resistance, and power using Ohm's Law.

Estimate your Google AdSense earnings based on traffic and RPM.

Calculate subnet masks, IP ranges, and available host addresses.

Create shareable pie charts with custom colors and labels.

Build styled bar charts for presentations and reports effortlessly.

Visualize trends over time with clean, customizable line charts.

Create spider/radar charts to compare multiple variables visually.

Create two and three-circle Venn diagrams for comparisons.

Build project management Gantt charts with tasks and timelines.

Create color-intensity heatmap charts for data density visualization.

Instantly see your public IPv4 and IPv6 address with geolocation info.

Check whether any website supports the faster HTTP/2 protocol.

Verify which TLS versions a server supports — critical for modern security.

Trace redirect chains and spot 301/302 issues that hurt SEO.

Check HTTP response codes for any URL — bulk checking supported.

Look up Autonomous System Numbers and associated IP ranges.

Generate cryptographically secure, customizable passwords instantly.

Generate UUID v1, v3, v4, and v5 in bulk for database and API use.

Generate placeholder text in various lengths for design mockups.

Create CODE128, EAN, UPC, and QR barcodes in multiple formats.

Generate effective AI prompts for ChatGPT, Claude, and image models.

Convert any image to a multi-size .ico favicon for your website.

Generate random numbers within any range with customizable output.

Convert MP3, WAV, AAC, FLAC, and more audio formats instantly.

Cut and trim video clips to exact timestamps in your browser.

Boost the volume of any audio file without re-recording or equipment.

Combine multiple video clips into one seamlessly in your browser.

Transcribe spoken words to text using your browser's microphone.

Explore the infinite Mandelbrot set with real-time zoom and coloring.

Generate beautiful Julia set fractals with customizable parameters.

Add names to a spinning wheel and randomize picks for giveaways.

Can't decide what to eat? Spin the wheel and let fate choose your meal.

Flip a virtual coin — heads or tails — with animated results.

Render the ethereal Buddhabrot fractal using escape-time orbits.