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A free, open toolkit for developers, freelancers, and businesses. Format JSON, decode JWTs, test APIs, calculate taxes, generate invoices — all in one place, all instant, all private.
30+ Tools
ready to use
5 Categories
dev, web, business & more
Open Source
free forever
Everything you need, nothing you don't. A focused toolkit that respects your time and your data.
Every tool processes your input server-side in milliseconds — no waiting, no spinners, no lag.
No login required. No data stored. Your code, tokens, and documents never leave the request cycle.
Keyboard-friendly, dark-mode by default, copy-to-clipboard everywhere. Built by developers, for developers.
All 30+ tools are completely free with no rate limits, no premium tiers, and no hidden costs.
From JSON formatting to Pakistan tax calculations — there's a tool for every task.
Paste text or upload files on your laptop and instantly access them from your phone or any other device. No account, no cloud storage, no complexity. Open a room, share a code, and start transferring.
Click "Create Room" and get a unique 6-character code like A3K-9MP.
Type the code on your other device — or scan the QR code from your phone.
Send text snippets and files. Everything syncs in real time across all devices.
Create a room, get a 6-character code, share it — done. No signup, no login.
Text and files appear instantly on all connected devices via WebSockets.
Upload images, documents, code files up to 10 MB. Download on any device.
Rooms auto-expire in 15–60 minutes. No data lingers — privacy by default.
Scan a QR code from your phone to join a room instantly — no typing needed.
Enhanced CSP headers on downloads, rate limiting, and zero permanent storage.
Free · No signup · Rooms auto-expire
Three steps. No signup. No config. Just results.
Browse 30+ tools across 5 categories — developer, web & API, business, Pakistan-specific, and productivity.
Paste your code, JSON, text, or numbers. Each tool has a clean, distraction-free interface.
Results are returned in milliseconds. Copy the output, download it, or use it directly in your workflow.
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Trusted daily by developers and freelancers across Pakistan and beyond.
“I use the JSON Formatter and JWT Decoder every single day. It's faster than any VS Code extension and works everywhere.”
Asad M.
Full-Stack Developer
“The Freelance Tax Estimator saved me hours of manual calculation. Finally a tool that understands Pakistan's tax structure.”
Fatima K.
Freelance Developer, Karachi
“The API Request Tester is a lifesaver when Postman feels too heavy. Clean UI, instant results, no setup required.”
Usman R.
Backend Engineer
“I use the Invoice Generator for every client. The print-ready preview is professional and my clients love it.”
Sara T.
UI/UX Designer & Freelancer
“DNS Lookup, Headers Checker, Website Status — all in one place. This replaced 3 different browser tabs for me.”
Bilal H.
DevOps Engineer
“The Markdown Editor preview is beautiful. I write all my blog posts here now before pasting them into WordPress.”
Nadia A.
Content Writer & Blogger
30+ tools. Zero signup. Works instantly. Start building faster right now.
Browse All ToolsEverything you need to know about DevTool House.