Base64 Encoder & Decoder
Encode text to Base64 and decode it back, in the standard or URL-safe alphabet, without your text leaving the page.
Nothing leaves your browser: the conversion happens here, in the page.
Base64
UXVhY2t5YXJkIPCfpoY=
14 bytes of UTF-8, written as 20 Base64 characters.
More in the yard
- chmod CalculatorConvert Unix permissions between octal and symbolic notation, special bits included.
- CIDR & Subnet CalculatorWork out what an IPv4 or IPv6 block covers, split it into subnets, and check whether an address is inside it.
- Color Converter & Contrast CheckerConvert a colour between HEX, RGB, HSL and OKLCH, and check two colours against WCAG.
- Cron BuilderRead and write cron expressions in plain English, with the next run times in any timezone.
- CSS SelectorsWrite one CSS selector that picks exactly the elements a level highlights, in as few characters as you can.
- Hash GeneratorHash text with MD5, SHA-1, SHA-256, SHA-384 and SHA-512 at once, and check a hash against it.
- JSON Formatter & ValidatorFormat, minify and check JSON, and see the exact line and column where it breaks.
- JSON ↔ YAML ConverterConvert between JSON and YAML: anchors resolved, multi-document files handled, and output that round-trips.
- JWT DecoderDecode a JSON Web Token in your browser and read its header, claims and expiry in plain words.
- QR Code GeneratorMake a QR code for a link, Wi-Fi, an email or a phone number, and download it as SVG or PNG.
- Regex TrainerLearn regular expressions one level at a time: match one list, skip the other, in as few characters as you can.
- SQL DetectiveSolve a yard mystery with SQL: ten levels of queries against a small database, in as few characters as you can.
- Diff CheckerCompare two texts line by line, word by word or character by character, and copy the unified diff.
- Unix Timestamp ConverterTurn Unix timestamps into dates and back, in any timezone.
- URL Encoder & DecoderPercent-encode text for URLs, decode it back, and take a URL apart into its pieces.
- UUID Generator & DecoderGenerate version 4 and 7 UUIDs, or take any UUID apart: its version, its variant, and when a time-based one was made.
- Word CounterCount words, characters, sentences and paragraphs as you type, with reading and speaking time.