Developer & Coding Tools
Encode, decode, generate, test and convert — Base64, URL encoder, UUID generator, RegEx tester, hash generator, CRON builder, and more developer utilities.
.gitignore Generator
Generate .gitignore files for any language, framework, or IDE. Select multiple targets and get a combined, clean .gitignore.
ASCII ↔ Hex Converter
Convert between ASCII text and hexadecimal. Type in either panel — the other updates instantly. Supports space, comma, or 0x-prefix hex formats.
Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 strings back to plaintext or binary. Supports file upload.
CRON Expression Builder
Build and validate CRON job expressions visually. See a human-readable description and the next 5 run times.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes from any text string. Uses the Web Crypto API.
Hex to ASCII Converter
Convert hexadecimal values back to ASCII text. Accepts space-separated, comma-separated, or continuous hex strings.
HTML Entity Encoder / Decoder
Encode special characters to HTML entities and decode them back. Handles &, <, >, Unicode, and more.
JSON ↔ CSV Converter
Convert JSON arrays to CSV spreadsheets and CSV data back to JSON. Supports nested object flattening. Download the result.
JSON ↔ YAML Converter
Convert between JSON and YAML formats instantly. Useful for Kubernetes configs, CI/CD pipelines, and API definitions.
JSON Validator
Validate JSON syntax and get detailed error messages with line and column numbers. Also supports JSON5 comments.
JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, expiry status, and claims — without needing a secret key.
Number Base Converter
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) instantly.
RegEx Tester
Test and debug regular expressions interactively. See match highlights, capture groups, and all matches in real time.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds, with live current time display.
URL Encoder / Decoder
Encode special characters for URLs using percent-encoding, or decode URL-encoded strings back to readable text.
UUID / GUID Generator
Generate cryptographically random UUID v4 identifiers. Generate multiple UUIDs at once and copy them all.