Every time you visit a website, your browser and the server exchange hidden bits of information called HTTP headers. These headers tell browsers how to display content, manage caching, enforce security policies, and more. With the HTTP Header Checker on…
In today’s internet, SSL certificates are no longer optional—they’re essential. From search engine rankings to user trust, SSL plays a crucial role in keeping your website secure and professional. But what if you need to quickly check whether your SSL…
When you run services on a server—websites, game servers, remote desktops, or mail servers—those services listen on network ports. A port scanner checks which of those ports appear open or closed. The Port Scanner (Simulated) on 99tools.in lets you safely…
Have you ever wondered how long it will take to download a movie, upload a file, or back up data to the cloud? That’s where a Bandwidth Calculator Tool comes in handy. It helps you estimate download and upload times…
If you’ve ever dealt with data transfer, file handling, or web development, you’ve likely come across Base64 encoding. It’s one of the most widely used encoding methods for representing data in a safe, text-based format. But what exactly is Base64?…
Subnetting is a term you may have heard of if you’ve ever set up IP addresses or managed a network. Network engineers, system administrators, and even developers who work with servers need to know how to do this. But it’s…
Ever wondered who owns a domain name, when it was registered, or when it’s set to expire? That’s exactly what a Whois Lookup Tool can tell you. Whether you’re a website owner, digital marketer, or just curious about a domain,…
When you type a website address into your browser, magic happens in the background to take you to the right place. But that “magic” is actually powered by DNS (Domain Name System). If you’re a developer, network admin, SEO professional,…
Alright, let’s get real—if you’ve ever smashed your head against the wall trying to get your game server online, or wondered why your email just straight-up vanishes into the void, you’ve probably heard folks muttering about “open ports” and “closed…
