// 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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Readability Score Checker
Analyze text readability with 7 algorithms. Visual sentence highlighting, improvement tips, and grade-level targeting. Free and private.
Writing
EXIF Metadata Viewer
View and remove EXIF data from photos. See camera settings, GPS location, and strip metadata before sharing. 100% browser-based.
Privacy
AI Token Counter
Count tokens and estimate API costs for GPT, Claude, and Gemini. Compare pricing across models instantly. Exact counts for OpenAI models.
Developer
Salary Visualizer
See what you earn per second and race your earnings against Jeff Bezos in real time. Live counter, purchase power breakdown, and shareable results.
Finance
Browser Privacy Checker
See what your browser reveals about you. 20+ fingerprinting tests, a letter grade, and actionable recommendations. Everything runs locally.
Privacy
Meeting Cost Calculator
See what meetings really cost in real time. Enter attendees and hourly rate, press Start, and watch the cost tick up. Shareable result cards.
Productivity
Morse Code Translator
Convert text to Morse code and back with audio playback. Visual dot-dash display, adjustable speed and tone. Works entirely in your browser.
Encoding
Fancy Text Generator
Convert your text into 40+ font styles. Bold, cursive, gothic, stars, hearts, and more. One-click copy, works everywhere.
Text
Percentage Calculator
Calculate discounts, tips, grades, margins, and more. Real-world percentage tools that actually make sense.
Calculator
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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Readability Scores Explained: How to Write Content Anyone Can Understand
54% of U.S. adults lack proficiency in literacy. Learn what 7 readability algorithms measure, what grade level to target, and how to improve your writing with real data.
Building a Readability Checker with 7 Algorithms in Pure JavaScript
Syllable counting is surprisingly hard. I built a tool that runs 7 readability formulas in the browser with real-time sentence highlighting — and the cursor problem nearly broke me.
Building an EXIF Viewer That Puts Privacy First
Most EXIF tools upload your photos to a server. I built one that parses metadata, shows GPS on a map, and strips everything — entirely in the browser.
What Your Photos Reveal About You: Understanding EXIF Metadata
Your photos contain hidden GPS coordinates, device info, and timestamps. Learn what EXIF metadata exposes and how to protect yourself before sharing.
Building an AI Token Counter That Shows What Your Prompts Actually Cost
Most token counters show a number. I built one that loads OpenAI's tokenizer in the browser and compares costs across 13 models from three providers — no server required.
What Are Tokens in AI? How LLMs Process and Price Your Text
Learn what tokens are, how AI models break text into pieces using BPE tokenization, and why token count directly determines your API costs across GPT, Claude, and Gemini.