Yes. Every tool is free to use with no limits, no account and no watermarks. The site is supported by unobtrusive advertising, which lets us keep everything free and add new tools regularly.
37 free tools · runs in your browser
The toolbox for everyday web work.
Count, convert, format, generate and check – instantly, privately, without an account. Built for writers, marketers, developers and anyone who just needs the tool to work.
01Categories
All 37 tools02Popular tools
- Text
Case Converter
Convert text to sentence case, lower, UPPER, Title Case (AP/APA/Chicago/MLA), alternating, camelCase, snake_case and kebab-case instantly.
- Text
Character Counter
Count characters with and without spaces, words, sentences and bytes live, and check text against X, Instagram, LinkedIn and SEO limits.
- Developer
JSON Formatter & Validator
Format, validate and minify JSON with exact error lines, one-click fixes for common mistakes and lossless output.
- Calculators
Percentage Calculator
Six percentage calculators on one page: percent of, what percent, change, difference, add/subtract and reverse.
- Utilities
Strong Password Generator
Create strong random passwords or memorable passphrases, with a strength meter based on real entropy. Nothing is sent or saved.
- Text
Word Counter
Count words, characters, sentences and paragraphs in real time, with reading time and keyword density.
03Recently added
Browse all- Text
Alphabetical Order Tool
Put any list in alphabetical order, A to Z or Z to A, or sort by last name, length or number. Nothing is uploaded.
- Design
CSS Border Radius Generator
Drag corner handles or use sliders to build CSS border-radius shapes, elliptical corners and blobs, then copy CSS or Tailwind.
- Design
CSS Box Shadow Generator
Build layered CSS box shadows visually, preview them on light and dark, and copy the CSS, Tailwind class or custom property.
- Text
Case Converter
Convert text to sentence case, lower, UPPER, Title Case (AP/APA/Chicago/MLA), alternating, camelCase, snake_case and kebab-case instantly.
- Text
Character Counter
Count characters with and without spaces, words, sentences and bytes live, and check text against X, Instagram, LinkedIn and SEO limits.
- Developer
Chmod Calculator (Linux File Permissions)
Tick owner, group and others permissions to get the octal mode, symbolic mode and copy-ready chmod commands, including recursive find.
04How ToolkitJar works
Instant
Pages are pre-rendered and each tool loads only the code it needs. Results update as you type – no submit button, no server round-trip.
Private
Your text and files are processed on your device. There is no upload step because there is no upload – we never see your data.
Explained
Every tool page shows the method or formula behind the result, with worked examples, so you can trust what you copy.
No sign-up
No accounts, no quotas, no watermarks, no “pro” tier. Open the page and use the tool.
05Tool directory
Common questions
Are the tools on ToolkitJar really free?
Is my data safe when I use these tools?
All processing happens inside your browser using JavaScript. Text you paste and files you open are never uploaded to our servers, so there is nothing for us to store, read or share. Close the tab and it is gone.
Do I need to install anything?
No. Every tool runs in a normal web browser on desktop, tablet and phone. There is nothing to download and nothing to update – you always get the latest version.
How do you decide which tools to build next?
We look at what people actually search for, what existing tools do badly, and what visitors ask for through the contact page. New tools ship every week; the newest ones are listed on this page.