Tools
Small, fast tools for everyday work. All of them run in your browser: nothing you type is sent to us or anywhere else.
Privacy: the tools on this page run entirely on your computer or phone. Passwords, keys and texts never reach our server and are not stored.
Generates hard-to-guess random passwords and shows the rough strength of one you type. Randomness comes from the browser's cryptographic generator. Look-alike characters (l, I, O, 0, 1) are left out.
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Computes the SHA-1, SHA-256, SHA-384 and SHA-512 digest of a text - handy for comparing a download's checksum. SHA-1 is no longer safe and is shown for compatibility only.
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Turns text into Base64 or URL encoding and back. Non-ASCII characters are handled as UTF-8. Base64 is not encryption: anyone can decode it.
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Pretty-prints JSON, squeezes it onto one line, and says why when it is invalid.
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Makes a JSON Web Token's header and payload readable and shows when it expires. The signature is not verified.
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Generates random (version 4) UUIDs for database rows, file names or test data.
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From an IP address and prefix (like 192.168.1.10/24) or a mask, works out the network, broadcast, usable range and address count.
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Turns a Unix timestamp (seconds or milliseconds) into a date and a date into a timestamp - useful when reading logs.
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Turns a link, Wi-Fi details or any text into a QR code you can download as SVG. The code is made in your browser.
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Well-known, legal tools and services for defence and for checking your own systems. Use them only on your own systems or where you have permission; unauthorised scanning and testing is a crime in Turkey too (TCK 243-245).