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
JSON, encoding, formatting, validation, and code utilities for developers.
JSON Formatter & Beautifier
Format, prettify, and validate JSON instantly in your browser.
JSON Validator
Validate JSON syntax and structure. Get clear error messages.
JSON Diff Checker
Compare two JSON objects and see what changed.
Base64 Encoder
Encode text or files to Base64 format instantly.
Base64 Decoder
Decode Base64 strings back to text or binary.
URL Encoder
Percent-encode text for safe use in URLs and query strings.
URL Decoder
Decode percent-encoded URL strings back to readable text.
HTML Escape
Escape special HTML characters to prevent injection.
HTML Unescape
Convert HTML entities back to their original characters.
UUID Generator
Generate one or many UUIDs (v4) instantly.
Regex Tester
Test and debug regular expressions with live match highlighting.
Text Diff Checker
Compare two text blocks and highlight what changed.
Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, and more.
Word Counter
Count words, characters, lines, and reading time.
Markdown Preview
Write Markdown and preview the rendered HTML in real-time.
Networking & Sysadmin
DNS, IP, WHOIS, HTTP headers, subnet calculators, and sysadmin essentials.
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.
Subnet Calculator
Calculate subnet masks, network ranges, and host counts from CIDR.
Cron Expression Builder
Build and understand cron expressions with a visual interface.
Security
Password tools, hash generators, JWT inspection, and security utilities.
Password Generator
Generate strong, random passwords with custom rules.
Password Strength Checker
Check how strong your password really is.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly.
JWT Decoder
Decode and inspect JWT tokens without verification.
Bcrypt Hash Generator
Generate and verify bcrypt password hashes.
Data Tools
CSV, JSON, TSV converters and file data utilities.
Productivity & Time
Epoch converters, timezone tools, timers, and scheduling utilities.
Epoch / Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back.
Timezone Converter
Convert times between any two timezones instantly.
Pomodoro Timer
Focus timer using the Pomodoro Technique.
Date Difference Calculator
Calculate the number of days, weeks, or months between two dates.
Stopwatch
Online stopwatch with lap times and split tracking.
Countdown Timer
Set a countdown timer with hours, minutes, and seconds.
World Clock
See the current time in multiple cities worldwide at once.
Meeting Timer
Keep meetings on track with a visual countdown and agenda timer.
Image Tools
Resize, compress, convert, and generate favicons from images.
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.
Image Resizer
Resize images to exact dimensions or by percentage, in browser.
Image Compressor
Compress JPG, PNG, and WebP images with quality control.
JPG to PNG Converter
Convert JPG images to PNG format instantly in your browser.
PNG to JPG Converter
Convert PNG images to JPG format with adjustable quality.
JPG to WebP Converter
Convert JPG images to WebP for smaller web file sizes.
PNG to WebP Converter
Convert PNG images to WebP for smaller file sizes.
WebP to JPG Converter
Convert WebP images to JPG for maximum compatibility.
WebP to PNG Converter
Convert WebP images to PNG with lossless quality.
Compress JPG
Reduce JPG file size with quality control. Browser-based, instant.
Compress PNG
Compress PNG images or convert to WebP for maximum savings.
Compress WebP
Compress WebP images with a quality slider. Smallest modern format.
Reference
HTTP codes, MIME types, ports, ASCII tables, and keyboard shortcuts.
HTTP Status Code Reference
Complete reference for all HTTP status codes with explanations.
Common Ports Reference
Searchable list of all well-known and common network ports.
Color Format Converter
Convert between HEX, RGB, HSL, and CSS color formats.
Linux Commands Reference
Searchable reference for common Linux commands with examples.
Learning & Checklists
IT quizzes, checklists, templates, and interactive learning tools.
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 |
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