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UtilKit

About UtilKit

UtilKit is a free, fast, and privacy-focused collection of online utilities for developers, designers, and everyday users. Every tool runs entirely in your browser - your data never leaves your device.

Our Mission

We believe everyday tools should be fast, free, and private. Too many online utilities upload your data to remote servers or hide useful features behind paywalls. UtilKit takes a different approach: every calculation, conversion, and transformation happens client-side using modern browser APIs and well-established open-source libraries.

How It Works

UtilKit is a static web application built with Next.js and React. There is no backend server processing your data. When you paste text, upload an image, or generate a password, everything is computed locally in your browser - that content is never uploaded, stored, or logged.

To be precise about the rest: the Site uses Google Analytics to count page views and which tools get used, and our host records standard server logs. Your theme preference is saved in your browser, and the tool pages are cached on your device so they keep working offline. None of that ever includes what you type, paste, or upload. The one tool that downloads anything from elsewhere is Image to Text (OCR): the first time you use a language, it fetches that language's data from the jsDelivr CDN and keeps it in your browser - the image itself still never leaves your device. Our Privacy Policy spells it all out.

What We Offer

UtilKit currently has 49 tools, in the same groups as on the home page:

  • Text: Case conversion, word and character counting, sorting, duplicate line removal, cleaning, line numbering, diffing, Markdown preview, and lorem ipsum placeholder text.
  • Developer: JSON, XML and SQL formatting; conversion between JSON, CSV, YAML and TypeScript; Base64, URL and HTML entity encoding; JWT decoding; regex testing; hashing; cron expressions; and CSV viewing.
  • Colors: Color conversion, palette generation, tints and shades, gradients, box shadows, and WCAG contrast checking.
  • Images: Resizing, compressing, cropping, format conversion, conversion to and from Base64, EXIF viewing, color picking, text extraction with OCR, and QR code scanning.
  • Generators: Passwords, UUIDs, QR codes, barcodes, and fake test data.
  • Calculators: Unit conversion, percentage calculations, date differences, timestamps, and number base conversion.

Free to Use

Every tool on UtilKit is free to use, with no account or sign-up. We may introduce non-intrusive advertising in the future to help cover the cost of running the site.

Contact

Have a question, suggestion, or bug report? We would love to hear from you. Visit our contact page to get in touch.