NPH
Huy Nguyenhuynp.dev

huynp.dev/tools

Useful Tools

Each tool is a standalone module, ready to expand into developer, SEO, and media utilities.

SEO Checker

Check title, description, canonical, H1, and Open Graph tags for a URL.

HTTP Header Checker

Inspect status code, redirect chain, and response headers.

JSON Formatter

Format, minify, and validate JSON in your browser.

Encoder / Decoder

Encode/decode URL and Base64 values for dev workflows.

Network Check

Check device DNS resolvers, public IP, and IPv6 connectivity.

IP / Host Lookup

Enter a domain or IP to inspect A/AAAA records, ASN, registry, route, and network location.

Image Compressor

Reduce image size, convert WebP/AVIF/JPEG/PNG, and resize quickly.

Image Resizer

Resize multiple images, choose fit mode, and download all as a ZIP.

When should you use these tools?

  • Run a fast technical SEO check before publishing a new landing page.
  • Inspect redirect chains and response headers when indexing or canonical issues appear.
  • Check DNS/IP/IPv6 when users report network issues that are hard to reproduce internally.
  • Compress and resize images before upload to reduce page weight and improve Core Web Vitals.

FAQ

Are these tools free to use?

Yes. All current tools on huynp.dev are free.

Do I need an account to use them?

No. You can use the tools directly in your browser.

When should I use SEO Checker vs HTTP Header Checker?

Use SEO Checker for high-level metadata checks. Use HTTP Header Checker for detailed redirect and header diagnostics.