ZZBOLT

NEW zero-install web tools

Tiny utilities. Big time-savers.

Everything on this page runs 100% in your browser — no accounts, no tracking. Save the page and it still works.

  • Instant text utilities: case convert, count, encode.
  • 🧪JSON format/validate with one click.
  • 🔳Generate QR codes, favicons, and pick colors for quick design.

Featured tools

Text

Case Converter + Counter

Instantly convert text to uppercase, lowercase, title or sentence case — and count words, characters, and lines. Works offline in your browser.

#tool-case
Words: 0 • Characters: 0 • Lines: 0
Data

JSON Formatter & Validator

Paste any JSON and format, minify, or validate it instantly. Fast, free, and privacy-friendly — no data leaves your browser.

#tool-json
Encode

Base64 / URL Encoder

Quickly encode or decode Base64 and URL strings — no installs, no tracking, just instant conversions.

#tool-encode
Share

QR Code Generator

Create and download custom QR codes for links or text — runs 100% in your browser.

#tool-qr
Design

Favicon Maker

Upload an image to create a favicon (PNG, 16x16 or 32x32) for your website. Runs in your browser.

#tool-favicon

Note: Downloads as PNG. Convert to ICO using an external tool if needed.

Design

Color Picker

Pick a color and convert between HEX, RGB, and HSL formats. Perfect for web design.

#tool-color-picker
HEX: - | RGB: - | HSL: -

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Latest Notes

Roadmap

Upcoming utilities we can ship next: CSV → JSON converter, image compressor (client-side), regex tester, and a simple invoice generator.

Want something specific? Request a tool.

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Powered by caffeine and curiosity — more tools are always on the way.