Free SEO tools
for developers and marketers
Browser-based tools for developers, marketers, and website owners. Check redirects, generate meta tags, build UTM URLs, and more — all free, no account needed.
Common workflows
Combine tools for common SEO and marketing tasks. Each workflow chains tools together for a complete solution.
Site migration audit
Verify all redirects work correctly after moving to a new domain or restructuring URLs.
Campaign tracking setup
Build UTM-tagged URLs for email, social, and paid channels with consistent naming.
Technical SEO audit
Check canonical tags, meta robots directives, and robots.txt across your site.
Real-world use cases
See how teams use NodSEO to solve everyday problems.
Debugging a broken redirect chain
A developer notices a 404 spike after a URL change. They paste the old URL into Redirect Checker, trace the full chain, and find a misconfigured 302 that should be a 301.
Try Redirect CheckerSetting up tracking for a product launch
A marketer needs UTM-tagged links for email, social, and paid ads. They use UTM Builder for individual URLs and Bulk UTM Generator to process 50 URLs from a spreadsheet.
Try UTM BuilderAuditing canonical tags across 500 pages
An SEO consultant discovers several pages have missing or conflicting canonical tags. They use Canonical Tag Checker to scan the entire site and export the results for the client.
Try Canonical Tag CheckerFree web and SEO tools
Practical browser-based tools for web, network, and URL management. Every tool runs entirely in your browser.
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
Utility Tools
IP Lookup
Look up detailed information about any IPv4 address, IPv6 address, or domain name. View geolocation, ISP, ASN, timezone, coordinates, and network information instantly.
- IPv4, IPv6, and domain lookup
- Geolocation with coordinates and timezone
- ISP, organization, and ASN detection
Roman Numeral Converter
Convert numbers to Roman numerals and Roman numerals back to numbers instantly. Supports 1–3999 with standard subtractive notation (IV, IX, XL, XC, CD, CM).
- Number to Roman numeral conversion
- Roman numeral to number conversion
- Instant conversion with step-by-step breakdown
Why NodSEO
Built for practical, everyday web and SEO tasks. No friction, no limits.
Specialized Tools
Redirect tracing, robots.txt generation, canonical checking, meta tag creation, UTM building, IP lookup, and Roman numeral conversion — all in one platform.
Privacy-First Architecture
UTM Builder, Meta Tag Generator, and Roman Numeral Converter run entirely in your browser. Redirect Checker and Canonical Checker use a server API only for HTTP requests.
Free Forever
No subscriptions, usage caps, or premium tiers. Every tool is free with unlimited usage.
No Account Required
Start using any tool immediately. No signup, no email, no personal information needed.
Bulk Processing
Redirect Checker and Canonical Checker support bulk URL analysis with CSV/JSON/TXT export. UTM Builder supports bulk link generation from imported data.
Cross-Platform
Works in Chrome, Firefox, Safari, and Edge. Responsive design for desktop, tablet, and mobile.
Platform capabilities
Every tool is built on the same foundation of browser-native processing, real-time validation, and flexible export options.
Real-time validation
URL validation, duplicate detection, and error highlighting happen as you type — no submit buttons required.
Multiple export formats
Export results as CSV, JSON, or TXT. Copy individual items or entire datasets to clipboard.
File import support
Import CSV, TSV, JSON, or plain text files for bulk operations. Auto-detect delimiters and handle BOM characters.
Redirect Checker and Canonical Checker use a Cloudflare Worker for HTTP requests, bypassing CORS restrictions.
UTM Builder generates QR codes for each campaign URL, downloadable as PNG.
Every tool page includes structured data (BreadcrumbList, WebApplication, FAQPage) for search engines.
Each tool page includes detailed guides, FAQs, and SEO best practices to help you use the tool effectively.
Frequently asked questions
What tools are available?
Meta Tag Generator, UTM Builder, Bulk UTM Generator, Redirect Checker, Robots.txt Generator, Canonical Tag Checker, IP Lookup, and Roman Numeral Converter.
Are they free?
Yes. Every tool is completely free with no usage limits, subscriptions, or hidden costs.
Do I need an account?
No. Start using any tool immediately without signup or authentication.
Is my data safe?
Most tools process data entirely in your browser. The Redirect Checker and Canonical Tag Checker use a Cloudflare Worker for HTTP analysis only — no data is stored or logged.
Can I shorten the generated URLs?
Yes. The generated URLs work with any URL shortener. Copy the URL and paste it into any URL shortener like Bitly or TinyURL. UTM parameters are preserved through redirects.
Can I use these URLs with Bitly?
Yes. Bitly preserves UTM parameters when redirecting to your destination URL. Simply generate your UTM-tagged URL and paste it into Bitly.
Can I bulk import from a CSV file?
Yes. The Bulk UTM Generator supports importing CSV, TSV, TXT, and JSON files. If your file only contains URLs, the tool prompts you to apply common parameters to all rows.
How many URLs can I generate at once?
The tool handles up to 20,000 rows smoothly. All processing happens client-side in your browser with no server-imposed limits.
Is my data uploaded to any server?
No. All URL generation happens locally in your browser. Your URLs, UTM parameters, and imported files are never uploaded or transmitted to any server.
Can I generate QR codes for UTM URLs?
Yes. The URL Preview panel includes a QR code generator. Download as PNG or SVG for offline campaigns and print materials.
How do I name my campaigns consistently?
Use a convention like [campaign]_[channel]_[date]. Example: spring_sale_email_2026. Document your convention so your team follows it consistently.
What's the difference between utm_source and utm_medium?
utm_source identifies the specific platform sending traffic (e.g., google, facebook). utm_medium describes the marketing channel (e.g., cpc, email, social). Source is who, medium is how.
Why should I use lowercase in UTM parameters?
Google Analytics treats values as case-sensitive. 'Google' and 'google' are counted as different sources. Using consistent lowercase prevents data fragmentation.
How does the bulk generation work?
Import a list of URLs and apply UTM parameters to all of them at once. The tool validates URLs, detects duplicates, and generates tracking links for every row.
What file formats does the bulk import support?
CSV (.csv), TSV (.tsv), TXT (.txt), and JSON (.json) files. CSV auto-detects comma or semicolon delimiters. Files up to 10 MB.
Your data stays yours
Privacy is not a feature — it is the foundation of every tool.
Client-side processing
All URL generation happens locally in your browser. No data is uploaded to any server.
No tracking
We do not collect analytics on your generated campaign URLs. What you build stays private.
No storage
Generated URLs are not stored on our servers. Local storage is used only for your session state.
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Explore NodSEO
Free tools, practical guides, and side-by-side comparisons. Everything you need for everyday SEO tasks.