Free Online Developer Tools
Free online developer tools for working with text, JSON, encoding, hashes, and more. Fast, private, browser-based utilities for developers.
Encoding & Hashing
Base64 Encoder & DecoderEncode and decode Base64 strings online with UTF-8 support. Fast, simple, and processed entirely in your browser.MD5 Hash GeneratorGenerate MD5 hashes online instantly. Simple, fast, and processed entirely in your browser.SHA-1 Hash GeneratorGenerate SHA-1 hashes online instantly. Note that SHA-1 is considered cryptographically weak and should not be used for security-sensitive applications.SHA-256 Hash GeneratorGenerate SHA-256 hashes online instantly. Fast, simple, and processed entirely in your browser.SHA-512 Hash GeneratorGenerate SHA-512 hashes online instantly. Fast, simple, and processed entirely in your browser.Bcrypt Hash Generator & VerifierGenerate and verify Bcrypt password hashes online. Passwords are processed entirely in your browser and are not sent to a server.
Generator
UUID GeneratorGenerate UUID v4 and UUID v7 identifiers locally in your browser.ULID GeneratorGenerate valid ULIDs with configurable quantity and casing.Random String GeneratorGenerate secure random strings with configurable character sets.Password GeneratorGenerate strong random passwords locally in your browser.QR Code GeneratorCreate QR codes for URLs and plain text directly in your browser.QR StudioCreate styled QR codes locally in your browser.Lorem Ipsum GeneratorGenerate Lorem Ipsum placeholder text by paragraphs, sentences, or words.
Developer Tools
Base64 Encoder & DecoderEncode and decode standard Base64 text in your browser with UTF-8 support.URL Encoder & DecoderEncode and decode URL components locally in your browser.JWT DecoderDecode JWT header, payload, and signature locally in your browser.Regex TesterTest JavaScript regular expressions with flags, match details, and capture groups locally.Unix Timestamp ConverterConvert Unix timestamps and ISO 8601 UTC dates locally in your browser.Hash GeneratorGenerate SHA hash digests from text locally in your browser.Cron ExpressionValidate Unix cron expressions, explain fields, and preview upcoming local runs.