Tools

Fast calculators, converters, and generators. Most tools run entirely in your browser and never send what you type anywhere, and there is no sign-up. The network tools contact outside services to work, as explained in the privacy policy.

IT Tools for sysadmins33 technical tools grouped by task: DNS, email, SSL, security and converters, each with a plain note on when to use it.Open IT Tools →

Network & Security Tools

Islamic & MENA

Converters

Dev & IT

JSON Formatter & Validator

Pretty-print, minify, and validate JSON entirely in your browser.

CSV ⇄ JSON Converter

Convert CSV to JSON or JSON to CSV, handling quoted fields and custom delimiters correctly.

YAML ⇄ JSON Converter

Convert YAML to JSON or JSON to YAML, supporting mappings, sequences, and comments.

XML ⇄ JSON Converter

Convert XML to JSON or JSON to XML, handling attributes, nested elements, and repeated tags.

Word & Character Counter

Live word, character, sentence, and paragraph counts with reading time estimate.

Base64 Encoder & Decoder

Encode/decode Base64 with correct UTF-8 handling for Arabic, emoji, and other Unicode text.

Color Converter

Convert colors between HEX, RGB, and HSL with a live preview swatch.

Number Base Converter

Convert integers between binary, octal, decimal, hex, and any base 2-36.

URL Encoder & Decoder

Percent-encode or decode a full URL or a single URL component.

Text Case Converter

Convert text to UPPERCASE, Title Case, camelCase, snake_case, kebab-case, and more.

Hash Generator

Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text, instantly.

Image Format Converter

Convert images between JPG, PNG, WEBP, and ICO, entirely in your browser.

Meta Tag Generator

Generate SEO, Open Graph, and Twitter Card meta tags for any page, ready to paste.

HTML Entity Encoder & Decoder

Convert text to HTML entities or decode HTML entities back to plain text, instantly.

Regex Tester

Test JavaScript regex patterns against sample text with live match highlighting and capture groups.

Text Diff Checker

Compare two blocks of text line by line and see exactly what was added, removed, or unchanged.

Unix Timestamp Converter

Convert between Unix epoch timestamps and human-readable dates, instantly.

IPv4 Subnet Calculator

Get the network address, broadcast address, usable host range, and subnet mask from an IP and CIDR prefix.

Markdown Previewer

Write Markdown and see a live-rendered HTML preview side by side.

JWT Decoder

Decode a JSON Web Token's header and payload, and see expiry status, entirely in your browser.

Crash Dump Analyzer

Upload a Windows minidump (.dmp) or Linux core file to extract readable structural info, entirely in your browser.

EXE to MSI Wrapper

Upload a Windows .exe and download it wrapped in a minimal MSI installer package.

Design & Media

Generators

Games & Puzzles

Calculations

General Health

Finance & Markets