Runs in your browser
Every tool is written in plain JavaScript and runs locally. Your text, files, and passwords never leave the page.
A library of free utilities
Small tools, sharp edges, no nonsense.
stoolme is a growing collection of free browser-based tools for writing, coding, design, and everyday math. Every utility runs locally in your browser — nothing is uploaded, nothing is stored.
25
Free tools
0
Sign-ups
100%
Client-side
∞
Uses per day
Most-used utilities
The handful of tools that most visitors come back for.
Writing
Word counter
Live word, character, sentence, paragraph and reading-time stats.
→ Security Password generatorStrong, customizable passwords generated in your browser.
→ Developer JSON formatterPretty-print, minify, and validate JSON with helpful errors.
→ Generator QR code generatorTurn any text, URL or Wi-Fi credential into a downloadable QR.
→ Writing Case converterUPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case.
→ Design Color converterConvert between HEX, RGB, HSL with a live swatch.
→ Developer Base64 encoderEncode and decode text to Base64 with UTF-8 support.
→ Math Percentage calculatorFive common percentage problems solved in one place.
→Why another tools site?
Most tools sites are buried in ads and trackers. Ours aren't.
No sign-up, no limits
We don't ask for an email, set a quota, or paywall the "pro" version. There is no pro version. The tools are the product.
Light by design
Pages are typically under 50 KB, work on slow connections, and don't load heavy third-party scripts.
Honest documentation
Every tool comes with a short guide explaining what it does, when to use it, and where it fails. No fluff, no SEO padding.
Browse by category
Pick the kind of task and jump straight to the tools that handle it.
8 tools
Writing & text
Counters, case converters, slug generators, lorem ipsum, line tools.
→ 6 tools DeveloperJSON, Base64, URL encoding, UUID, HTML escape, binary.
→ 2 tools DesignColor converter and CSS gradient generator.
→ 5 tools Math & financePercentage, BMI, age, tip, and loan calculators.
→ 3 tools GeneratorsQR codes, passwords, random numbers, UUIDs.
→ 2 tools Web & SEOMeta-tag generator, unix timestamp converter.
→
A note from the maker
Made because the alternatives kept getting worse.
Search "json formatter" and you'll land on a page with three banner ads, a pop-up, and a tool that breaks on inputs over 5 KB. stoolme is the simple alternative — a clean page, a working tool, and a short guide. That's it.
The site is built and maintained by a small independent team. We add a tool roughly every two weeks based on what people ask for on our contact page. If a tool you use is missing or broken, we'd genuinely like to hear about it.
Quick questions
Is stoolme really free?
Yes. There is no paid tier, no usage cap, and no sign-up. The site is supported by a small number of non-intrusive ads and that's it.
Do my files or text get uploaded to a server?
No. All processing happens in your browser using JavaScript. You can verify this by opening the developer network tab — you'll see no outgoing requests when you click a tool button.
Can I use the tools offline?
Once a tool page has loaded in your browser, it generally works offline. You'll lose access to fonts and shared assets, but the tool itself will run.
Can I suggest a new tool?
Please do. The contact page has a short form, or you can email us. Most of the catalog started as a reader request.