Technology
Practical guides to digital security, apps and technology for everyday life and small businesses.
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Tools for this topic
- Base64 encoder and decoderEncode and decode Base64 online for free: text with accents and emoji (UTF-8), files and images, data URLs and the URL-safe variant. All in your browser.
- Color converterConvert between HEX, RGB, HSL, HWB and OKLCH, check WCAG contrast (AA/AAA) and generate tints and shades, ready for CSS and Tailwind.
- Hash generatorGenerate MD5, SHA-1, SHA-256 and SHA-512 hashes of text or files, compare with the expected checksum and compute HMAC. Free, in your browser: nothing is uploaded.
- JSON formatterFormat, validate and minify JSON online for free. Shows the exact error line and column, sorts keys and has a tree view. Runs in your browser: nothing is uploaded.
- JWT decoderDecode JWTs online: see the header, payload and exp, iat and nbf dates, and verify HS256 signatures. The token never leaves your browser.
- Password generatorGenerate strong passwords and easy-to-remember passphrases, with entropy and estimated time to crack explained honestly. All in your browser.
