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Everything your website needs.
Tidied up.
SEO, developer, DNS, security, image and formatting tools. Free, fast and ready to use.
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What do you need?
Check your website
Find technical issues quickly.
Check SEO, metadata, security headers and essential site signals.
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Popular tools
Built for speed,
privacy, and precision.
Most SEO tools are incredibly slow, bloated with pop-up ads, or hide their best features behind a $29/mo subscription. We built SiteTidy to be the exact opposite.
Core principles
100% Client-Side Processing
Where possible, tools like JWT decoding and JSON formatting run entirely in your browser. Your data never leaves your machine.
Ad-Free Forever
No banners, no pop-ups, no tracking pixels. Just a pure, clean developer experience without distractions.
Privacy First
We don't store, log, or sell your data. Client-side tools mean your API keys and tokens stay on your device.
Open & Transparent
Every tool shows exactly what it does. No hidden upsells, no "premium" tiers. What you see is what you get.
Developer-First Design
Dark mode, keyboard shortcuts, monospace outputs. Every detail is tuned for how developers actually work.
Enterprise features,
completely free.
Agency-grade tools that competitors charge $99/mo for. White-label reporting and bulk processing, available to everyone.
White-Label PDF Reports
Run full site audits and export beautiful, branded PDFs with your agency logo to send directly to your clients.
- Custom logo & branding
- Full technical SEO audit
- Client-ready download
Bulk CSV Processing
Upload up to 500 URLs at once and check HTTP statuses, meta tags, redirects, and more — concurrently.
- 500 URLs per batch
- Concurrent processing
- CSV export of results
Expert guides &
tutorials.
Deep-dive tutorials on SEO, security, DNS, and web performance — written by developers, for developers.
View all 50+ guidesbfcache and Cache-Control: Why no-store Is Not a Logout Strategy
A practical guide to back/forward cache, Cache-Control no-store, logout safety, pageshow, stale application state and debugging bfcache failures in production.
Local Network Access: Why Your HTTPS App Suddenly Needs Permission to Reach localhost
A practical guide to Local Network Access: Chrome's LAN permission, localhost and private-IP requests, targetAddressSpace, iframes, WebSockets, mixed content and migration from PNA.
CSS content-visibility: Skip Rendering Work Without Making the Page Jump
A practical guide to content-visibility and contain-intrinsic-size: where they save rendering work, how bad size estimates cause scroll jumps, and when not to use them.
HTTP 103 Early Hints: Make Server Think Time Useful
A practical guide to HTTP 103 Early Hints: when preconnect and preload help, when they double-fetch, how redirects and CSP change the result, and how to roll them out safely.
Fetch Metadata: Use Sec-Fetch-Site to Reject Requests Your App Never Wanted
A practical guide to Sec-Fetch-Site, Sec-Fetch-Mode and Sec-Fetch-Dest: building a resource isolation policy without breaking navigation, APIs, webhooks or older clients.
Permissions Policy: Lock Down Browser Features Without Breaking Your Iframes
A practical guide to the Permissions-Policy header and iframe allow attribute, including inheritance, camera and microphone delegation, rollout, reporting and common production mistakes.
Frequently asked, clearly answered.
Everything you need to know about SiteTidy.app. If you can't find what you're looking for, we're here to help.
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Most Common Questions
Your Question, Answered
What is an SEO audit?
An SEO audit is a comprehensive technical evaluation of your website to ensure it complies with search engine guidelines. SiteTidy analyzes your meta tags, structured data, canonical URLs, and response times to ensure maximum visibility in Google.