kitzos is a collection of free online tools for everyday tasks — merging PDFs, compressing images, formatting JSON, counting words, and more. Everything is built to run entirely in your web browser, without sending your files to our servers.
Why kitzos exists
Many online tools ask you to upload sensitive documents or create an account before you can do something simple. kitzos takes the opposite approach: open a tool, get the job done, and leave. No signup walls, no waiting for uploads, and no wondering where your data ended up.
Privacy and speed by design
When you use a kitzos tool, your PDFs, images, and text are processed on your device using modern browser APIs. We don't operate a backend that receives or stores that content. That means faster workflows for you and a smaller privacy footprint — your files stay with you.
The site may show ads to help keep the tools free. Advertising is provided by third-party advertising partners (currently Adsterra) and is separate from how the tools themselves work. See our Privacy Policy for details.
What we offer
Tools are organized into seven categories. Each category groups related utilities so you can find what you need quickly:
PDF Tools
Merge, split, and work with PDF files entirely in your browser.
Image Tools
Compress, resize, and optimize images without uploading to a server.
Text Tools
Count words, convert case, and transform text instantly.
Developer Tools
Format JSON, encode Base64, generate QR codes, and more.
- QR Code Generator
- Barcode Generator
- JSON Formatter
- Base64 Encoder / Decoder
- Hash Generator
- UUID Generator
- Color Picker
- Color Code Converter
- Color Palette Generator
- Regex Tester
- JWT Decoder
- CSV ↔ JSON Converter
- JSON to TypeScript
- URL Encoder / Decoder
- CSS Minifier & Formatter
- JavaScript Minifier
- XML Formatter
- SQL Formatter
- CSS Gradient Generator
- Box Shadow Generator
- Glassmorphism Generator
- SVG Pattern Generator
- Open Graph Image Generator
- Favicon Generator
- Meta Tag Generator
- Click Ripple Effect Generator
- .htaccess Redirect Generator
- Cron Expression Parser
- Placeholder Image Generator
Calculators
Free online calculators for health, finance, dates, and more.
Converters
Convert units, measurements, and values instantly.
Utilities
Handy everyday utilities and productivity tools.
Audio Tools
Cut, convert, merge, and record audio entirely in your browser.
A note on accuracy
We work to keep tools reliable and useful, but software has limits. Always double-check important output — especially for legal, medical, or financial documents. kitzos is a practical utility, not a certified professional service.
Get in touch
Have feedback, a bug report, or an idea for a new tool? We'd like to hear from you on our Contact page.