23.02.2026
3 min
312
To begin our analysis of the web-based applications that can make performing everyday tasks much simpler, we are going to start with an overview of web-based tools which can be used to generate keys and tokens, create identifiers, assess password strength, work with hashes and encryption, or easily convert between date and format types without added complexity.
All of the tools listed below can run directly in your browser — no need to download software or set up anything complex. The tools will serve as a useful resource for developers, systems administrators, and anyone else who regularly works with data and/or security; we will clearly explain each tool’s function and provide examples of how they can save you time.
A simple tool that generates a random token of the length you need. You can choose the character set — numbers only, letters only, or a mix of everything. It’s especially handy when you need to quickly create a key for a test API or service access without opening separate utilities or writing extra code.
You paste your text in, and it instantly gives you the hash using different algorithms. It’s a quick way to check whether identical strings produce the same result or to see what an MD5 or SHA hash looks like for a specific value. I often use it for fast checks when I don’t feel like opening the terminal.
It generates a mnemonic phrase for crypto wallets — the familiar 12 or 24 words. If you’re into crypto or testing something blockchain-related, it’s an easy way to see how a seed phrase looks. That said, for real funds, it’s always safer to generate one offline.
A dedicated tool specifically for hashing passwords with bcrypt. You’ll notice that the hash changes even when you use the same password — and that’s exactly how this algorithm is supposed to work. 
It generates an RSA public and private key pair in seconds. Perfect for a test environment or when you just want to quickly see how public-key encryption works in practice. No need to install OpenSSL or mess around with the command line.
You can encrypt a piece of text and then immediately decrypt it to see how everything works. It’s great for testing or learning, especially when you don’t want to dig into libraries or write code from scratch.
You paste in a password and instantly see how weak or strong it is. It estimates how long it would take to crack and highlights the weak spots. It’s a quick way to show someone why “123456” doesn’t count as a real password.
It lets you generate an HMAC using a piece of text and a secret key. This is often used to sign API requests or verify the authenticity of messages. When you’re debugging an integration, it can save you a lot of time.
Similar to a UUID, but a bit more modern. It’s especially useful when you need identifiers that can also be sorted by creation time. You won’t need it every day, but it definitely comes in handy now and then.
It generates standard UUIDs — those long strings with hyphens you see everywhere. You’ll need them in almost any project: databases, logs, test records. When you don’t feel like writing code just to create a single ID, you open it, generate one, and paste it in.
It checks whether a PDF contains a digital signature and whether it’s valid. That’s useful when you receive documents and want to make sure they haven’t been altered after being signed. It works quickly and doesn’t require any complicated software.
It converts dates into different formats and back into a timestamp. A lifesaver when you’re staring at a string of numbers in the logs and trying to figure out what date it actually represents. It’s a small thing, but developers and admins use it all the time.
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