All ByteTools

16 core privacy-first tools + AI Studio with 7 AI developer tools. Everything runs in your browser - your data never leaves your device.

Developer Tools

JWT Decoder

Decode and inspect JSON Web Tokens safely

JSON Formatter

Format, validate, and minify JSON data

Regex Tester

Test regular expressions with real-time matching

Base64 Encoder

Encode text to Base64 or decode Base64 back to text

URL Encoder

Encode and decode URLs for safe transmission

Security Tools

Passphrase Generator

Generate secure, memorable passphrases

File Hash Generator

Generate cryptographic hashes for your files

Privacy Scanner

Detect tracking pixels, analytics, and fingerprinting

Email Header Analyzer

Analyze email authentication and detect spoofing

Utility Tools

QR Generator

Create QR codes for WiFi, contact info, etc.

IP Subnet Calculator

Calculate subnets, CIDR notation & supernetting

Calculators

Percentage Calculator

Calculate percentage increase, decrease, change & more

Unit Price Calculator

Calculate price per lb, oz, g, or kg with multipack support

Cost Average Calculator

Calculate Dollar Cost Averaging for stocks, crypto & investments

ROI Calculator

Calculate Return on Investment percentage & profit/loss

Payback Calculator

Calculate break-even time for solar panels, appliances & more

AI Developer Tools

AI Studio

7 essential tools for AI developers: Prompt Designer, Token Calculator, Guardrail Builder, Function Schema Builder, Chunking Optimizer, Pipeline Designer, and Vector Simulator.

Resources

Blog

Tutorials, guides, and best practices

Guides & Tutorials

Step-by-step guides to master our tools

Privacy Policy

Our privacy-first commitment