Free Online
Web & SEO Tools
Browser-based tools for developers, marketers, and website owners. Check redirects, generate robots.txt files, analyze canonical tags, build UTM campaign URLs, and complete common technical SEO tasks — no account or installation needed.
All tools run directly in your browser. No downloads, installations, or plugins required.
Every tool on this site is completely free. No subscriptions, no usage limits, no hidden costs.
Most tools process your data locally in your browser. The Redirect Checker and Canonical Tag Checker send URLs to a Cloudflare Worker for server-side analysis, but no data is stored or logged.
Start using any tool immediately. No registration, login, or email required.
Free SEO Tools
Practical browser-based SEO utilities for common technical SEO and URL management tasks. Each tool runs in your browser — no account or installation required.
Technical SEO
Redirect Checker
Trace URL redirect chains and view per-hop status codes, response times, and the final destination URL. Detects SEO issues like redirect loops, long chains, and mixed content.
- Full redirect chain tracing with per-hop details
- SEO issue detection and warnings
- Bulk URL checking with CSV/JSON/TXT export
Robots.txt Generator
Generate, preview, and download valid robots.txt files. Set crawl rules for specific user-agents, block directories, and include sitemap URLs.
- User-agent and rule management
- Presets for common platforms
- Live file preview with copy and download
Canonical Tag Checker
Check canonical tags on any URL. Detects missing, multiple, relative, cross-domain, and mismatched canonicals with an SEO health score and detailed analysis.
- HTML canonical tag and HTTP Link header detection
- SEO health scoring with detailed breakdown
- Bulk URL checking with CSV/JSON/TXT export
Meta Tag Generator
Generate production-ready HTML meta tags for your web pages. Live search preview, Open Graph and Twitter Card generators, character counters, and favicon link tags — all from a single form.
- Live search result preview
- Open Graph and Twitter Card tag generation
- Character counters and validation warnings
UTM Builder
Build campaign URLs with standard UTM parameters and preview the final tracking URL. Copy results as plain text, Markdown, or HTML.
- All standard UTM parameter fields
- Live URL preview with validation
- Copy as text, Markdown, or HTML
- QR code generation
Bulk UTM Generator
Create multiple UTM-tagged URLs from imported or pasted data. Supports CSV, TSV, JSON, and TXT imports with template presets and export.
- Import from CSV, TSV, JSON, and TXT files
- Editable table with auto-fill templates
- Export as CSV, JSON, or TXT
Built for Technical SEO & URL Management
A collection of practical tools for everyday web and SEO work.
Redirect Management
Trace redirect chains, detect loops and mixed content, verify final destinations, and audit bulk URL lists for redirect health.
Crawl Configuration
Generate robots.txt files to guide search engine crawlers, block unwanted bots, and declare sitemap locations.
Canonicalization
Analyze canonical tags for correctness, detect implementation issues, and verify consistency between HTML and HTTP Link headers.
Campaign Tracking
Build UTM-tagged campaign URLs for marketing channels. Generate single or bulk links with consistent parameter conventions and validation.
Why Use This Website
Designed for practical, everyday web and SEO tasks — with no friction or overhead.
No Installation
Every tool runs in your browser. No software to download, no dependencies to install, no updates to manage.
Privacy-First
Most processing happens client-side. UTM Builder and Robots.txt Generator data never leaves your device. The Redirect Checker sends URLs to a Cloudflare Worker for tracing only — no data is stored or logged.
Free Forever
Every tool is free to use with no subscriptions, usage caps, or premium tiers. No account or signup needed.
No Account Required
Start using any tool immediately without creating an account, signing in, or providing personal information.
Quick Workflows
Tools are designed for speed. Enter your data, configure options, and get results — all in a single interface.
Modern Browser Support
Works in all modern browsers including Chrome, Firefox, Safari, and Edge. Responsive design for desktop and mobile.
Platform Features
Capabilities available across the tools on this site.
Browser-Based Tools
Most tools run entirely in the browser using standard web technologies — no backend servers, no third-party services. The Redirect Checker and Canonical Tag Checker use a Cloudflare Worker for server-side HTTP analysis.
Multiple Export Formats
Export results as CSV, JSON, or TXT. Copy URLs as plain text, Markdown, or HTML. The UTM Builder also generates QR codes as PNG or SVG.
File Import
Import data from CSV, TSV, JSON, or plain text files. The Bulk UTM Generator, Redirect Checker, and Canonical Tag Checker all support file import workflows.
Live Validation
Real-time URL validation, duplicate detection, and error highlighting as you work. Catch issues before deploying.
Copy to Clipboard
Copy individual results with a single click. Export complete datasets as downloadable files in your preferred format.
Built-in Presets
UTM templates for common campaign types. Robots.txt presets for popular platforms. Apply standard configurations in one click.
How It Works
Every tool follows the same straightforward workflow.
Choose a Tool
Select the tool that matches your task from the available tools section.
Enter Your Data
Type or paste your input, or import a file. The interface updates in real time as you work.
Configure Options
Adjust available settings, choose presets, or apply templates to match your requirements.
Review & Validate
Preview results, check for errors, and validate your output before finalizing.
Copy or Export
Copy individual results to your clipboard or export the full dataset in your preferred format.
Who This Website Is For
Built for anyone who works with URLs, web infrastructure, and campaign data.
Developers
Build UTM-tagged campaign URLs for app features and landing pages. Debug redirect chains, validate canonical tags, and generate robots.txt configs — all from the browser.
SEO Professionals
Audit redirect health, validate robots.txt directives, and check canonical tag implementations. Generate consistent UTM parameters for campaign tracking and reporting.
Digital Marketers
Build UTM-tagged campaign URLs for email, social, paid search, and display channels. Bulk generate and export links for multi-channel campaigns.
Agencies
Manage UTM tracking, redirect audits, and technical SEO configurations across multiple client projects. Standardize and export data for reporting.
Content Creators
Create properly formatted UTM tracking links for social profiles, guest posts, newsletters, and affiliate content. Verify redirect paths before sharing links.
Website Owners
Set up campaign tracking, verify redirect health, configure robots.txt crawl rules, and check canonical tags to maintain your site's technical foundation.
Built for Practical Use
What you can expect from every tool on this site.
Works on Desktop & Mobile
Responsive design adapts to your screen size. Full functionality on phones, tablets, and desktops.
Accessible Interface
Built with semantic HTML, keyboard navigation, and screen reader support. Skip-to-content and focus management included.
No Data Storage
Your data is not stored on any server after processing. Session state is saved locally in your browser for your convenience only. Tools that require server-side analysis send URLs to a Cloudflare Worker for processing, but nothing is persisted.
Regularly Maintained
Tools are actively maintained and updated. Built with current web standards for compatibility and performance.
Frequently Asked Questions
What types of tools are available?
NodSEO offers a Meta Tag Generator for creating HTML meta tags, a UTM Builder and Bulk UTM Generator for campaign tracking URLs, a Redirect Checker that traces HTTP redirect chains, a Robots.txt Generator with live preview, and a Canonical Tag Checker for analyzing rel=canonical implementations.
Are the tools free?
Yes, every tool on this site is completely free. There are no subscription plans, usage limits, or paid features. No credit card is ever required.
Do I need an account?
No account or signup is required. You can start using any tool immediately. The site does not store personal information or require authentication.
Is my data sent to any server?
Most tools process everything locally in your browser — your data never leaves your device. The Redirect Checker and Canonical Tag Checker send URLs to a Cloudflare Worker for server-side HTTP analysis, but no data is stored or logged.
Do the tools work on mobile devices?
Yes. The interface is responsive and works on phones, tablets, and desktops. Functionality is consistent across all screen sizes.
Are more tools planned?
The site currently offers six tools: Meta Tag Generator, UTM Builder, Bulk UTM Generator, Redirect Checker, Robots.txt Generator, and Canonical Tag Checker. Any future additions will be announced on the site.
Can I use these tools for commercial projects?
Yes. All tools are free to use for any purpose, including commercial and business use. There are no restrictions on how you use the generated output.
Documentation
Details about how the platform works, what it supports, and what to expect.
Browser Compatibility
All tools are built with standard web technologies and work in the latest versions of Chrome, Firefox, Safari, and Edge. Internet Explorer and legacy browsers are not supported.
JavaScript must be enabled. The site uses modern browser features including the Clipboard API, localStorage, and File API for import and export functionality.
Privacy & Data Handling
Most tools process data entirely in your browser. The Redirect Checker and Canonical Tag Checker send URLs to a Cloudflare Worker for server-side analysis, but no data is stored or logged. UTM Builder and Robots.txt Generator data never leaves your device.
Session state is persisted in your browser's localStorage for convenience. This data never leaves your device and can be cleared at any time through your browser settings.
The site does not use analytics trackers, cookies, or fingerprinting. Your usage is not monitored or recorded.
Accessibility
The interface uses semantic HTML elements, ARIA labels, and keyboard-navigable controls. A skip-to-content link is available for screen reader users.
Focus indicators are visible on all interactive elements. Color contrast meets WCAG AA standards in both light and dark modes.
Supported Devices
The responsive interface works on mobile phones, tablets, laptops, and desktop computers. Layout and functionality adapt automatically to screen size.
Touch input is supported on all interactive elements. File import and export work on mobile browsers with file system access.
Start using free web tools now
No account needed. Most tools run entirely in your browser.