# Web & Network Tools

> DNS lookup, subnet calculator, JWT decoder, meta tag generator and chmod calculator. Free web and network tools for webmasters and admins.

Tools for websites and networks: calculate subnets, check DNS records, decode JWTs and generate meta tags.

## Tools in this category

- [Chmod Calculator](https://pockettoolbox.org/en/chmod-calculator): Easily calculate Linux file permissions (chmod) in numeric and symbolic formats.
- [DNS-over-HTTPS Lookup](https://pockettoolbox.org/en/dns-lookup): Find the IP address behind a domain and query DNS records (A, AAAA, MX, TXT) securely over HTTPS.
- [Flexbox Playground](https://pockettoolbox.org/en/flexbox-playground): Interactive guide to CSS Flexbox properties.
- [JWT Decoder](https://pockettoolbox.org/en/jwt-decoder): Decode JSON Web Tokens (JWT) to view header, payload, and signature.
- [Keycode Info](https://pockettoolbox.org/en/keycode-info): Shows information about pressed keys.
- [Meta Tag Generator](https://pockettoolbox.org/en/meta-tag-generator): Generate HTML SEO meta tags for your website.
- [Subnet & CIDR Calculator](https://pockettoolbox.org/en/subnet-calculator): Calculate network boundaries, IP address ranges, netmasks, and usable hosts for IPv4.

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PocketToolbox (https://pockettoolbox.org/en)