// free tools, no signup
Free online tools,
Free online tools,
built for everyone.
SudoTool is a collection of free, browser-based utilities for developers and non-developers alike. No account, no installation — just open and get things done.
Featured Tools
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Fake Data Generator
Generate realistic test data for development. Names, emails, addresses, credit cards, and 20+ types. No row limits, no signup.
Developer
Pomodoro Timer
Immersive focus timer with ambient sounds, Flowtime mode, and session tracking. CSS-only backgrounds and GitHub-style heatmap.
Productivity
Password Generator
Generate cryptographically strong passwords, passphrases, and memorable passwords with real-time entropy visualization and strength analysis.
Security
Travel Currency Converter
See what prices really cost in your home currency while traveling. Track your
spending and stay within budget.
Travel
Running Weather Scheduler
Plan your weekly running schedule with 7-day weather forecasts. Get temperature, rain
probability, air quality, and personalized run scores.
Lifestyle
Image Compressor
Compress images with visual before/after comparison, auto-fit to target file size, and WebP conversion. 100% browser-based.
Media
World Clock & Meeting Planner
See your team's time zones at a glance. Add cities, set aliases, and find the best meeting time across multiple time zones.
Productivity
Investment Growth Simulator
Visualize compound interest growth with fees, taxes, and inflation. Compare scenarios side by side and plan for FIRE.
Finance
Why SudoTool?
No signup required
Every tool on SudoTool is available instantly. No account, no email, no password.
Just open your browser and start working.
Built for everyone
Whether you're a software engineer or just need to format a file for the first time,
our tools are designed to be simple and approachable.
Free, always
All tools on SudoTool are completely free to use. We believe useful utilities should
be accessible to everyone, without paywalls.
About SudoTool
SudoTool is a growing collection of free online utilities designed to make everyday tasks easier. Each tool is purpose-built to be fast, reliable, and useful — whether you're a developer or just someone who needs to get something done.
We built SudoTool because too many useful tools are hidden behind sign-up walls, ads, or paywalls. Our goal is simple: provide clean, no-nonsense tools that work in any browser, on any device, for anyone.
New tools are added regularly. If you have a suggestion for a tool you'd like to see, feel free to reach out.
From the Blog
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Why I Built a Pomodoro Timer When Hundreds Already Exist
Most Pomodoro timers are either too simple or too complex. I built one with immersive backgrounds, ambient sounds, and Flowtime mode — a focus space you want open all day.
Why I Built a Password Generator When Hundreds Already Exist
Most password generators show a random string and say "strong." I built one that shows entropy, crack times, and three modes for different real-world needs.
Why I Built a Free QR Code Generator When "Free" Ones Already Exist
Every "free" QR code generator charges for colors, logos, and SVG downloads. I built one where every feature is actually free and nothing leaves your browser.
Why I Built an Investment Growth Simulator When Every Bank Has a Calculator
Most compound interest calculators ignore fees, taxes, and inflation. I built a simulator that shows realistic numbers — and what you can actually live on after retirement.
Why I Built a World Clock and Meeting Planner When Phone Apps Already Exist
Your phone can tell you what time it is in London. It can't tell you when London, Seoul, and New York are all awake at the same time. So I built a tool that does.
Why I Built a Browser-Based Image Compressor When Free Ones Already Exist
Free compressor sites have usage limits, skip WebP, and store your files on their servers. So I built one that runs entirely in the browser — no upload, no server, no limits.