SSL Certificate Checker
Check a website's SSL/TLS certificate: issuer, validity, expiry date, SANs and chain.
Security & Encoding Tools
16 free tools
Free security and encoding tools to generate strong passwords, hash text with MD5, SHA and bcrypt, encode Base64 and URLs, check SSL certificates and validate cards.
All 16 security & encoding tools
Password Generator
Generate strong, random passwords with custom rules.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text (UTF-8 safe).
Password Strength Checker
Test how strong a password is and how long it would take to crack, privately in your browser.
URL Encoder / Decoder
Percent-encode or decode URLs and query string values.
Credit Card Validator
Check whether a card number is valid with the Luhn algorithm and identify the card network.
BIN Checker
Look up a card's issuing bank, country, network and type from its first 6–8 digits.
Bcrypt Hash Generator
Create bcrypt password hashes with a chosen cost, and check passwords against a hash.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
Email Verifier
Check whether an email address is valid: syntax, domain, mail servers and disposable domains.
CRC32 Checksum Generator
Calculate the CRC32 checksum of any text, as used by ZIP and PNG files.
RIPEMD-160 Hash Generator
Generate the RIPEMD-160 hash of any text, as used in Bitcoin addresses.
Whirlpool Hash Generator
Generate the 512-bit Whirlpool hash of any text.
Passphrase Generator
Create strong, memorable passphrases from random words, with a strength meter.
Morse Code Translator
Translate text to Morse code and back, then play it as sound.
ROT13 Encoder / Decoder
Encode or decode text with ROT13, ROT5, ROT18, ROT47 or any Caesar shift.
Practical guides
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How to Use SSL Certificate Checker
Check the SSL/TLS certificate of any website: issuer, expiry date, days left, trust, host name match, protocol, SANs and the full certificate chain.
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How to Use Password Generator
Generate strong, random passwords with your choice of length, uppercase, numbers and symbols. Created in your browser and never sent anywhere. Free.
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How to Use Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text. Switch between standard and URL-safe alphabets and copy the result directly in your browser.
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How to Use Password Strength Checker
Test how strong a password is and how long it could take to crack. Detects common passwords, words, dates and keyboard patterns, entirely in your browser.
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How to Use URL Encoder / Decoder
Encode or decode URL text with component and full-URL modes. Convert spaces and special characters to percent encoding and copy the result.
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How to Use Credit Card Validator
Check whether a card number is valid with the Luhn algorithm, detect the network (Visa, Mastercard, Amex and more) and verify the length, privately.
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