The Ultimate In-Browser Toolkit for Devs & Makers
Edit JSON, convert YAML, redact PDFs, analyze GitHub, generate UUIDs, and more — all locally, instantly, and without signups.
Blazing-Fast Tools — All in Your Browser (24)
From chess utilities to text converters, calculators, redaction tools, and GitHub preview generators — every feature works offline, with privacy built-in. No accounts. No uploads.
🔀 Chessboard
Explore randomized Chess960 starting positions and understand their dynamics.
📈 ELO Calculator
Estimate your new rating after a game or tournament using customizable ELO formulas.
⏳ Pomodoro Timer
Boost focus and productivity with guided Pomodoro sessions.
🌍 Timezone Viewer
Compare global timezones at a glance.
📂 CSV Tools
Edit, preview, and convert CSV files with ease.
🧾 JSON Tools
Clean, format, and validate JSON in-browser.
🎨 Color Converter
Convert HEX, RGB, and HSL formats — visually.
🔤 String Utilities
Transform, decode, and clean text or encoded strings to braille/morse.
🔁 OpenAPI to Postman V2
Convert OpenAPI specifications to Postman Collection V2.1 format in-browser — no upload needed.
🔀 Reverse Proxy
Securely route and manage external API calls through a single, unified gateway.
🆔 UUID Generator
Generate secure UUIDs locally with zero tracking.
📝 Markdown Editor
Write and preview Markdown with live formatting, syntax highlighting, and export support.
📘 Manifest Editor for PWA & Extensions
Edit and validate manifest.json files for Progressive Web Apps and browser extensions with intelligent suggestions and structure-aware editing.
🛡️ PDF Redaction
Redact sensitive content visually or permanently — all offline.
📊 GitHub Language Stats
Visualize language distribution in any public GitHub repository.
🖼️ GitHub Social Preview Generator
Generate sleek Open Graph preview images for your GitHub repositories.
🎨 Image Filter
Apply artistic filters and effects to enhance or stylize your photos.
🔎 Image OCR
Extract and copy text from images using built-in OCR technology.
📷 QR Code Generator
Generate QR codes from text, links, or contact info.
📏 Universal Calculator
All-in-one converter for bases, currencies, and measurements — including crypto, forex, length, weight, angle, temperature, data (bits/bytes), and time units.
💬 AI Chat
Use a built-in AI chat assistant for productivity, questions, or coding help — locally in your browser.
🔗 DOI Reference Lookup
Retrieve and format scholarly references from DOI links in APA style.
🧪 Periodic Table Explorer
Explore detailed info about all chemical elements.
📊 Status Monitor
Check the current system status and service uptime.
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All-in-One Productivity & Dev Suite — No Installs Required
Whether you’re editing code, converting formats, redacting PDFs, exploring chess theory, or generating visuals — do it all, instantly, right in your browser.