Free Online Tools for
Developers & Writers
Professional-grade tools for word counting, UUID generation, JSON formatting, and more. All free, privacy-focused, and works offline.
Popular Tools
Most UsedWord Counter
Count words, characters, and analyze text readability with keyword density tracking.
Try it nowUUID Generator
Generate RFC 4122 compliant UUID v4 identifiers for databases and APIs.
Try it nowMarkdown Editor
Edit markdown with live preview. Supports GitHub Flavored Markdown.
Try it nowJSON Formatter
Format, validate, and minify JSON with syntax highlighting and error detection.
Try it nowText Tools
Developer Tools
UUID Generator
Generate RFC 4122 compliant UUID v4 identifiers for databases and APIs.
URL Slug Generator
Convert text to SEO-friendly URL slugs with lowercase and hyphens.
Random String Generator
Generate secure random strings for passwords, API tokens, and secret keys.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting and error detection.
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Try NotepadOne FreePrivacy First
All tools run in your browser. Your data never leaves your device.
Lightning Fast
Client-side processing means instant results with no waiting.
100% Free
No signup, no credit card, no hidden costs. Free forever.
Why Use Our Free Online Tools?
Our collection of free online tools is designed for developers, writers, content creators, and digital professionals who need reliable, fast, and privacy-focused utilities. Every tool runs entirely in your browser, ensuring your data stays private and secure.
Popular Free Tools
- Word Counter: Professional text analysis tool with real-time word counting, character counting, reading time estimation, and Flesch readability scoring. Perfect for bloggers, students, and content marketers optimizing for SEO.
- UUID Generator: Generate RFC 4122 compliant UUID v4 identifiers for databases, APIs, and distributed systems. Supports bulk generation and download for efficiency.
- JSON Formatter: Format, validate, and beautify JSON data with syntax highlighting. Includes minification and custom indentation options for developers.
- Markdown Editor: Live preview markdown editor supporting GitHub Flavored Markdown (GFM). Create, edit, and export markdown files with instant preview.
Frequently Asked Questions
Are these tools really free?
Yes, all tools are 100% free to use with no signup, no credit card required, and no hidden costs. They will remain free forever. We believe in providing value to the developer and content creator community.
Do I need to create an account?
No, all tools work without any signup or registration. Just visit the page and start using the tool immediately. No email required, no tracking, no hassle.
Is my data safe and private?
Absolutely. All tools run entirely in your browser using client-side JavaScript. Your data never leaves your device and is never sent to our servers. We don't track, store, or analyze your content.
Do these tools work offline?
Yes, once the page is loaded, all tools work completely offline. They process data locally in your browser without requiring an internet connection. Perfect for working on planes, trains, or anywhere with spotty internet.
Can I use these tools for commercial projects?
Yes! All tools are free to use for both personal and commercial projects without any restrictions. Use them in your business, client work, or open-source projects freely.
Will you add more tools in the future?
Yes! We're constantly adding new free tools based on user feedback and popular demand. Check back regularly for updates, or follow us to stay informed about new releases.
Need More Than Just Tools?
If you need a full-featured notepad with unlimited notes, cloud sync across devices, real-time collaboration, and 5GB of storage for attachments, try NotepadOne. It's perfect for teams and power users who need more than just quick utilities.
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