About Tinker Tools

Tinker Tools is a free, open collection of browser-based utilities built for developers, designers, content creators, and anyone who regularly works with data. We started with a handful of formatting tools in early 2026 and have grown to over 75 individual tools that span six categories: Developer Tools, Image Tools, PDF Tools, Calculators, Video Tools, and Creator Tools.

Our Mission

The web is full of online tools that quietly upload your data to remote servers, run ads before you can use them, or lock basic features behind paywalls. We built Tinker Tools to prove that a different model works. Every tool on this site runs entirely inside your browser. Your files, your text, your numbers — none of it ever touches our servers. There is no sign-up, no usage cap, and no hidden premium tier.

How It Works

Under the hood, Tinker Tools is a static Next.js application. When you open a tool page, the code that powers the tool is downloaded to your browser as part of the page itself. File conversions, compressions, calculations, and formatting all happen through client-side JavaScript, WebAssembly (for video and PDF processing), and Canvas APIs. Because the processing is local, performance scales with your own hardware rather than with a remote server queue.

What You Can Do

Our toolkit covers a broad range of everyday tasks. Developers can format JSON, generate UUIDs, test regular expressions, encode URLs, compare text diffs, and convert between data formats like JSON, CSV, and XML. Designers and content creators have access to an image compressor, background remover, GIF maker, color palette extractor, gradient generator, and social-media image size guides. PDF tools let you merge, compress, and convert documents without installing desktop software. Financial and health calculators handle mortgage payments, salary breakdowns, BMI, calorie needs, and Korean tax computations. Video tools use FFmpeg compiled to WebAssembly so you can compress and convert video clips right in the browser tab.

Privacy by Design

We use Google Analytics to understand which tools are popular and how visitors navigate the site. We also display Google AdSense advertisements to cover hosting costs. Beyond those two services — both of which you can block with standard browser extensions — we collect nothing. No cookies for tracking, no fingerprinting, no server logs of your tool inputs. The source of truth is simple: if a tool does not make a network request, your data stays on your machine.

Technology

Tinker Tools is built with Next.js 15, React 19, TypeScript, and Tailwind CSS. Heavy lifting for image and video processing is handled by libraries like Sharp (via Canvas fallbacks), FFmpeg.wasm, and pdf-lib. The site is statically exported and served from a CDN for fast load times worldwide.

Get in Touch

Have a suggestion for a new tool, found a bug, or just want to say hello? Visit our contact page to reach out. We read every message and do our best to respond within a few days.