Free Online Tools
Fast, private, browser-based utilities for developers & everyone. No sign-up, no tracking, no nonsense.
JSON Formatter
Format, validate & minify JSON
Word Counter
Count words, characters & sentences
Password Generator
Generate strong random passwords
Base64 Codec
Encode & decode Base64 strings
URL Encoder / Decoder
Encode & decode URL components
UUID Generator
Generate v4 UUIDs instantly
Case Converter
Transform text between cases
Color Converter
Convert between HEX, RGB & HSL
Hash Generator
Generate MD5, SHA-1 & SHA-256 hashes
Lorem Ipsum Generator
Generate placeholder text
Timestamp Converter
Convert Unix timestamps & dates
Markdown Preview
Live preview of Markdown text
Developer Cheatsheets
Quick-reference guides you can bookmark and use daily
Why DuskTools?
100% Private
Everything runs in your browser. Your data never touches a server.
Instant & Free
No sign-up, no limits, no waiting. Open a tool and start using it.
Developer-Friendly
Built by developers, for developers. Clean, fast, keyboard-friendly.
Recommended Developer Tools
Tools we use and recommend alongside DuskTools
VS Code↗
Free, extensible code editor by Microsoft with built-in JSON, Markdown, and terminal support.
Bitwarden↗
Open-source password manager. Free for individuals, syncs across all devices.
Postman↗
API development platform for building, testing, and documenting HTTP APIs.
Obsidian↗
Free Markdown knowledge base with linking, graph view, and a rich plugin ecosystem.
ProtonVPN↗
Privacy-focused VPN from the makers of ProtonMail. Free tier available.
Vercel↗
Deploy frontend projects instantly. Free tier perfect for personal projects and tools.
DuskTools is free and always will be.
If these tools save you time, buy us a coffee to keep them running.