Generators
Random string
Generate random strings with selected character groups, a custom alphabet and an option to exclude ambiguous characters.
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Generators
Random hexadecimal
Create random hexadecimal strings in uppercase or lowercase, with adjustable length and batch size.
Open tool Generators
Random number
Pick random integers or decimal numbers within a chosen range, with endpoint controls, precision and batch generation.
Open tool Generators
UUID generator
Generate cryptographically random UUID v4 identifiers in bulk, with uppercase and hyphen formatting options.
Open tool Security & tokens
Password generator
Generate passwords locally with cryptographic randomness, required character groups, exclusions and batch output.
Open tool Generators
ULID & NanoID
Create time-sortable ULIDs or compact NanoIDs, including custom NanoID length and alphabet options.
Open tool Generators
Lorem Ipsum
Generate Lorem Ipsum placeholder text by word, sentence or paragraph for layout and typography testing.
Open tool Text & code
JSON formatter
Validate, pretty-print or minify JSON, optionally sort object keys and locate syntax errors in pasted data.
Open tool Converters
YAML ↔ JSON
Convert YAML configuration to JSON or JSON to readable YAML using safe parsing without executable custom tags.
Open tool Converters
Base64 / Base64URL
Encode Unicode text as Base64 or decode it back to UTF-8, with a URL-safe alphabet for tokens and query values.
Open tool Converters
URL encoder
Percent-encode or decode a complete URI or a single URL component, including Unicode and reserved characters.
Open tool Converters
HTML entities
Escape text as HTML entities or decode entity references, with decoded markup displayed safely as plain text.
Open tool Security & tokens
Hash, HMAC & PBKDF2
Calculate MD5 and SHA digests, keyed HMACs or PBKDF2-derived bytes locally, with hexadecimal or Base64 output.
Open tool Converters
Unix timestamp
Convert Unix seconds or milliseconds to ISO 8601, UTC and local time, or turn a date back into a timestamp.
Open tool Security & tokens
JWT encoder & decoder
Decode JWT claims, sign HS256/384/512 tokens, and verify HMAC signatures locally.
Open tool Converters
Color converter
Convert HEX, RGB, HSL, HSV and CMYK colors, preview the result and compare text contrast against a background.
Open tool Text & code
Regex tester
Test JavaScript regular expressions, inspect matches and capture groups, and preview replacement text with timeout protection.
Open tool Text & code
Text diff
Compare two texts by character, word or line, highlight additions and removals, and copy a unified diff.
Open tool Everyday utilities
QR code generator
Turn text or a URL into a downloadable QR code with size, error correction and foreground/background color controls.
Open tool Everyday utilities
Cron expression
Validate five- or six-field Cron expressions and inspect their next execution times in UTC or your browser timezone.
Open tool Text & code
Case converter
Convert names and text to camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case and more.
Open tool Converters
Image ↔ Base64
Encode a local image as a Base64 data URL or decode a data URL into a preview and downloadable image.
Open tool Converters
Base / radix converter
Convert arbitrarily large integers among bases 2–36, including binary, octal, decimal and hexadecimal.
Open tool Generators
Chinese ID test data
Generate or check syntactically valid 18-character mainland China resident ID numbers for testing.
Open tool Converters
CSV ↔ JSON
Convert quoted, multiline CSV data to JSON records and JSON arrays back to CSV.
Open tool Text & code
Unicode inspector
Inspect code points, UTF-8 bytes and escaped forms for each character.
Open tool Everyday utilities
URL inspector
Break a URL into origin, path, query parameters and fragment.
Open tool Text & code
Text statistics
Count characters, Unicode code points, words, lines and UTF-8 bytes.
Open tool Text & code
Line sorter & deduplicator
Sort, reverse or deduplicate lines, with optional case-insensitive comparison.
Open tool Text & code
URL slug generator
Turn a title into a tidy URL segment with configurable separators and Unicode handling.
Open tool Converters
Base32 encoder / decoder
Encode UTF-8 text to RFC 4648 Base32 and decode it back.
Open tool Everyday utilities
HTTP status lookup
Look up common HTTP response codes and their meanings.
Open tool Text & code
XML validator & formatter
Validate XML syntax and optionally format documents without fetching external resources.
Open tool