215 tools · Open source · Local-first

Your everyday toolkit

Make everyday work simpler.

Browse all tools

Popular: JSON formatterUUID v4 generatorBase64 encoder and decoderUnix timestamp converter

Files stay on your device

Local file tools process files on your device. No upload required.

Know where your data goes

Most web tools run on your device. API and remote MCP requests are processed on the server.

Offline when you need it

Install ToolTab for quick access. Cached local tools work offline; online lookups need an internet connection.

Browse by category

Passwords, encryption & hashes59 tools JSON & data39 tools Developer tools34 tools Images, design & QR codes25 tools Dates, time & calculations15 tools Networks & addresses14 tools PDF & files12 tools Text & writing12 tools

Popular tools

View all 215 tools

JSON formatterFormat and prettify JSON with proper indentation. Paste JSON or import a file; preview, copy, and download.QR code generatorGenerate QR codes for text, links, Wi-Fi credentials, contacts, phone actions, locations, and calendar events. Download the result as PNG, JPG, WebP, or SVG.UUID v4 generatorGenerate one lowercase UUID v4 locally with secure randomness Base64 encoder and decoderEncode plain text to Base64 and decode Base64 back to Unicode text directly in your browser.Unix timestamp converterConvert timestamps and dates with exact nanosecond precision.Random password generatorGenerate passwords, passphrases, grouped codes, and PINs in your browser.