ToolsForNerds

Free Online Tools & Utilities

Professional-grade online tools for developers, writers, and anyone who needs quick text analysis

Time & Date

2

Timezone Converter

Convert time between 400+ timezones worldwide with automatic DST handling

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates with seconds and milliseconds support

Developer Tools

11

Devtools Network Headers to JSON

Convert DevTools network headers into JSON format for easy use in code

String Difference Checker

Compare two strings character by character and find exactly where they differ

Fake Email Generator

Generate realistic fake email addresses for testing

JSON Viewer

View, format, and validate JSON with interactive tree visualization

URL Query String to JSON Converter

Convert URL query strings and parameters into clean JSON format

Multipart To JSON

Parse multipart/form-data HTTP payloads into readable JSON format

HTTP Cookie Parser & Decoder

Parse and decode cookie strings from browser headers into JSON

HTTP Request Builder

Convert DevTools network requests into code for fetch, axios, curl, Node.js, and Python

SweepFlow Browser AIO HUD

Visualize and manage SweepFlow automation instructions with interactive editing and command reference

UUID/GUID Generator

Generate universally unique identifiers (UUID/GUID) in v1, v4, and v7 formats with multiple output styles

Web Automation Practice

Practice site with all HTML form elements, Shadow DOM, and iframes for testing Puppeteer, Selenium, and web scraping bots

Text Tools

4

Character Counter

Count characters, words, sentences, and more in your text

Invisible Character Viewer

Detect and remove hidden or invisible Unicode characters in text, including zero-width and multi-character sequences.

Typo Generator

Generate realistic typos and misspellings for testing

Case Converter

Convert text between uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more

Data Converters

6

CSV to JSON/XML Converter

Convert CSV files to JSON or XML format instantly for data migration and API integration

XML to JSON Converter

Convert XML data to JSON format for modern web services and API integration

YAML to JSON Converter

Convert YAML configuration files to JSON format for DevOps and development workflows

Markdown to HTML Converter

Convert Markdown syntax to clean HTML code with optional inline styles and live preview

HTML to Markdown Converter

Convert HTML code to clean Markdown syntax for easy editing and content migration

JSON to TypeScript Converter

Convert JSON data to TypeScript interfaces or type aliases with automatic nested type generation

Encoding Tools

4

Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings with support for URL-safe encoding

HTML Entity Encoder & Decoder

Encode special characters to HTML entities or decode them back to prevent XSS attacks

URL Encoder & Decoder

Encode URLs and decode URL-encoded strings for safe URL parameters and query strings

Image to Base64 Converter

Convert images to Base64 strings or decode Base64 back to images with support for all formats

Security Tools

2

Hash Generator

Generate MD5, SHA-1, SHA-2 (224/256/384/512), SHA-3 (224/256/384/512), and RIPEMD-160, cryptographic hashes for text

JWT Decoder

Decode and inspect JSON Web Tokens (JWT) to view header, payload, and claims

Utilities

1

QR Code Generator

Generate QR codes for URLs, text, WiFi, email, phone numbers, and more

Design Tools

2

Color Picker & Converter

Pick colors and convert between HEX, RGB, HSL, and HSV formats with live preview

CSS Gradient Generator

Create beautiful CSS gradients with visual editor for linear and radial gradients

Generators

1

Random Identity Generator

Generate complete fake identities with personal, contact, financial, and employment details

Network Tools

1

IP Address Lookup

Get geolocation, ISP, and network information for any IPv4 or IPv6 address with detailed location data

Image Tools

1

Template Matching

Find and locate template images within larger images using OpenCV's template matching algorithms with multiple methods

Financial Tools

1

Asset Correlation Checker

Analyze correlation between stocks, ETFs, and assets to build diversified portfolios and manage risk

About ToolsForNerds

ToolsForNerds provides free, professional-grade online utilities designed to make your daily tasks easier.

Why Choose ToolsForNerds?

  • 100% Free: No signup required, no hidden costs
  • Privacy: All processing happens in your browser
  • Mobile Friendly: Works seamlessly on all devices
  • Always Accurate: Real-time updates and precise calculations
  • Fast & Lightweight: No unnecessary bloat or slow loading
  • Developer Friendly: Tools built by developers, for developers