File Extension Helpers

Tag: File Extension Helpers

3+ tools

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TLD & Domain Extension Lookup - Online All Endings

Search a complete list of all top‑level domains. See which still have availability. For brand naming. Static reference.

Reference domain extension reference TLD

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MIME Type ↔ Extension Lookup - Online Quick Reference

Search by MIME or file extension to see the corresponding type. Helpful when configuring web servers. Static.

Developer Tools extension lookup MIME reference

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Browser Extension Headers Check - Online Detect Injected Scripts

Look at HTTP headers and JavaScript objects to guess which browser extensions might be installed. For awareness.

Info browser checker extension privacy