Free Online Utility Tools
Count a draft, make a downloadable QR code, convert a color or generate a password. These lightweight utilities work on mobile and desktop without an account.
Text and sharing
Count an editable draft or create a QR payload locally. Reading-time estimates are approximate; test QR scans at the size and distance where the code will be used.
Encoding and conversion
Convert color notation, URL components, text encodings and timestamps. YAML and JSON helpers are also useful when preparing configuration snippets.
Color Converter
Convert HEX, RGB and HSL colors with a live preview.
Open tool Encoding & ConversionBase64 Encoder & Decoder
Encode and decode UTF-8 text without losing Unicode.
Open tool Encoding & ConversionURL Encoder & Decoder
Encode or decode a URL component safely.
Open tool Developer ToolsUnix Timestamp Converter
Convert Unix seconds, milliseconds and local dates.
Open tool Developer ToolsYAML to JSON Converter
Convert YAML maps and sequences to indented JSON with local syntax checks.
Open tool Developer ToolsJSON to YAML Converter
Convert valid JSON into readable YAML configuration without uploading data.
Open toolSecurity and generators
Choose a generator for your context: account passwords, standardized UUIDs or sample strings. A digest or decoded token does not by itself establish trust.
Password Generator
Create random passwords with configurable character sets.
Open tool Security & GeneratorsUUID Generator
Generate random version 4 UUIDs using browser cryptography.
Open tool Security & GeneratorsSHA Hash Generator
Generate SHA-256, SHA-384 or SHA-512 hex digests from UTF-8 text locally.
Open tool Security & GeneratorsRandom String Generator
Generate configurable random strings for test data and development identifiers.
Open tool Security & GeneratorsJWT Decoder
Inspect JWT headers and payloads locally.
Open toolFind more useful tools
Browse the complete directory or explore the developer, Flutter & Dart and utility collections.