Free IT Tools — All 55+

Developer utilities, networking diagnostics, security helpers, data converters, and reference guides. No signup required for most tools — open and run.

Developer Tools

19 tools

Networking & Sysadmin

Jump to: Developer Tools Networking & Sysadmin Security Data Tools Productivity & Time Image Tools Reference Learning & Checklists All categories →

Developer Tools

JSON, encoding, formatting, validation, and code utilities for developers.

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Browser

JSON Formatter & Beautifier

Format, prettify, and validate JSON instantly in your browser.

Browser

JSON Validator

Validate JSON syntax and structure. Get clear error messages.

Browser

JSON Diff Checker

Compare two JSON objects and see what changed.

Browser

Base64 Encoder

Encode text or files to Base64 format instantly.

Browser

Base64 Decoder

Decode Base64 strings back to text or binary.

Browser

URL Encoder

Percent-encode text for safe use in URLs and query strings.

Browser

URL Decoder

Decode percent-encoded URL strings back to readable text.

Browser

HTML Escape

Escape special HTML characters to prevent injection.

Browser

HTML Unescape

Convert HTML entities back to their original characters.

Browser

UUID Generator

Generate one or many UUIDs (v4) instantly.

Browser

Regex Tester

Test and debug regular expressions with live match highlighting.

Browser

Text Diff Checker

Compare two text blocks and highlight what changed.

Browser

Text Case Converter

Convert text between UPPERCASE, lowercase, Title Case, camelCase, and more.

Browser

Word Counter

Count words, characters, lines, and reading time.

Browser

Markdown Preview

Write Markdown and preview the rendered HTML in real-time.

Networking & Sysadmin

DNS, IP, WHOIS, HTTP headers, subnet calculators, and sysadmin essentials.

View all 14

IP Address Lookup

Look up geolocation, ISP, and network info for any IP address.

DNS Lookup

Query DNS records for any domain: A, AAAA, MX, TXT, CNAME, and more.

WHOIS Lookup

Check domain registration info and ownership details.

Browser

Subnet Calculator

Calculate subnet masks, network ranges, and host counts from CIDR.

Browser

Cron Expression Builder

Build and understand cron expressions with a visual interface.

Security

Password tools, hash generators, JWT inspection, and security utilities.

View all 11

Browser

Password Generator

Generate strong, random passwords with custom rules.

Browser

Password Strength Checker

Check how strong your password really is.

Browser

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly.

Browser

JWT Decoder

Decode and inspect JWT tokens without verification.

Browser

Bcrypt Hash Generator

Generate and verify bcrypt password hashes.

Data Tools

CSV, JSON, TSV converters and file data utilities.

View all 8

Browser

CSV to JSON Converter

Convert CSV files to JSON format instantly.

Browser

JSON to CSV Converter

Convert JSON arrays to CSV format for spreadsheets.

Browser

CSV Viewer

Open and view CSV files as a formatted table.

Productivity & Time

Epoch converters, timezone tools, timers, and scheduling utilities.

View all 8

Browser

Epoch / Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and back.

Browser

Timezone Converter

Convert times between any two timezones instantly.

Browser

Pomodoro Timer

Focus timer using the Pomodoro Technique.

Browser

Date Difference Calculator

Calculate the number of days, weeks, or months between two dates.

Browser

Stopwatch

Online stopwatch with lap times and split tracking.

Browser

Countdown Timer

Set a countdown timer with hours, minutes, and seconds.

Browser

World Clock

See the current time in multiple cities worldwide at once.

Browser

Meeting Timer

Keep meetings on track with a visual countdown and agenda timer.

Image Tools

Resize, compress, convert, and generate favicons from images.

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Browser

Image to Base64

Convert images to Base64 data URIs for embedding in HTML/CSS.

Favicon Generator

Generate favicon files in all sizes from any image.

Browser

Image Resizer

Resize images to exact dimensions or by percentage, in browser.

Browser

Image Compressor

Compress JPG, PNG, and WebP images with quality control.

Browser

JPG to PNG Converter

Convert JPG images to PNG format instantly in your browser.

Browser

PNG to JPG Converter

Convert PNG images to JPG format with adjustable quality.

Browser

JPG to WebP Converter

Convert JPG images to WebP for smaller web file sizes.

Browser

PNG to WebP Converter

Convert PNG images to WebP for smaller file sizes.

Browser

WebP to JPG Converter

Convert WebP images to JPG for maximum compatibility.

Browser

WebP to PNG Converter

Convert WebP images to PNG with lossless quality.

Browser

Compress JPG

Reduce JPG file size with quality control. Browser-based, instant.

Browser

Compress PNG

Compress PNG images or convert to WebP for maximum savings.

Browser

Compress WebP

Compress WebP images with a quality slider. Smallest modern format.

Reference

HTTP codes, MIME types, ports, ASCII tables, and keyboard shortcuts.

View all 10

Browser

HTTP Status Code Reference

Complete reference for all HTTP status codes with explanations.

Browser

Common Ports Reference

Searchable list of all well-known and common network ports.

Browser

Color Format Converter

Convert between HEX, RGB, HSL, and CSS color formats.

Browser

Linux Commands Reference

Searchable reference for common Linux commands with examples.

Learning & Checklists

IT quizzes, checklists, templates, and interactive learning tools.

View all 7

Browser

IT Quiz of the Day

Test your IT knowledge with a new quiz every day.

Browser

Runbook Template Builder

Build a structured IT runbook template you can download.

Why use it.you tools?

Every tool on it.you is built to work without signup, without ads in the way, and without sending your data to a server (for browser-only tools). Whether you're a sysadmin diagnosing a DNS issue at 2am or a developer formatting JSON mid-review, these tools are designed to get out of your way and get the job done.

Browser-based

Most tools run entirely in your browser — no data is ever sent to our servers.

No signup required

Jump straight to the tool. Create an account only if you want to save favourites.

Always free

No paywalls, no token limits, no premium tiers. Free means free.

IT-focused

Built around real sysadmin and developer workflows, not generic web tools.

Tool types at a glance

Type	How it runs	Examples
Browser	100% client-side JavaScript. Zero server requests.	JSON Formatter, Password Generator
Backend	Server-side query needed (DNS, WHOIS, IP geolocation).	DNS Lookup, WHOIS

Quick links

JSON Formatter Password Generator DNS Lookup Subnet Calculator Base64 Encoder JWT Decoder Hash Generator UUID Generator

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