Every Tool You Need,
One Click Away
Free online tools for developers, creators, and makers. No sign-up, no ads tracking, no data collection. Everything runs right in your browser.
Everything We Offer
Jump to any section — developer tools, AI utilities, blog articles, or learn about us.
Developer Tools
JSON, Base64, QR Code, RegEx, Diff, UUID & more — 11 powerful utilities.
AI Tools
AI Summarizer, Rewriter, Translator & Chat — smart text processing with AI.
Blog
Articles about developer tools, AI trends, and productivity tips for makers.
About OneSeek
Learn about our mission, why we built this platform, and how to reach us.
11 Free Developer Tools
All tools run entirely in your browser. No data ever leaves your device.
JSON Formatter
Format, validate & beautify JSON with syntax highlighting and error detection.
Base64 Encoder / Decoder
Encode or decode Base64 strings instantly. File-to-Base64 support included.
QR Code Generator
Create custom QR codes with adjustable colors, sizes & download as PNG.
Password Generator
Generate strong, secure passwords with custom length, characters & rules.
URL Encoder / Decoder
Encode & decode URL components in real-time with character counting.
UUID Generator
Generate UUID v4 identifiers in bulk — copy individually or all at once.
Markdown Preview
Write & preview Markdown with live rendering, GitHub Flavored Markdown support.
Color Converter
Convert between HEX, RGB, HSL, HSV. Pick colors with built-in swatches.
Text Diff Checker
Compare two texts side-by-side. Highlights additions & deletions instantly.
Regex Tester
Test regular expressions with real-time match highlighting & capture groups.
Image Compressor
Compress JPEG, PNG & WebP images. Adjust quality, preview before saving.
Intelligent AI Tools
Supercharge your workflow with AI. Summarize, rewrite, translate, and chat.
AI Text Summarizer
Turn long articles into concise summaries — short, detailed, or bullet points.
AI Text Rewriter
Rewrite content in 5 different tones — professional, casual, concise & more.
AI Translator
Translate between 10+ languages with context-aware, natural-sounding results.
AI Chat Assistant
Conversational AI for brainstorming, problem-solving & quick answers.
Built for Privacy & Speed
Every tool is designed with your privacy in mind — no server, no tracking, no nonsense.
Privacy First
All processing happens on your device. Your data never leaves your browser — ever.
Lightning Fast
No server round-trips. Tools respond instantly as you type. Zero latency.
100% Free
No subscriptions, no paywalls, no premium tiers. Every tool is completely free.
Works Everywhere
Fully responsive. Use on desktop, tablet, or phone. Same great experience.