Articles & Guides
Practical tips, tutorials, and how-tos for every tool in your free online toolbox.
How to Generate RSA Key Pairs Online
Generate RSA public and private key pairs online for free. Create 2048 or 4096-bit keys for SSH, JWT signing, and encryption.
How to Encrypt Text Online with AES-256
Encrypt and decrypt text online with AES-256 for free. Protect sensitive messages with a password directly in your browser.
How to Minify JavaScript Online
Minify JavaScript code online for free. Reduce file size by removing whitespace, comments, and shortening variables for faster page loads.
How to Minify CSS for Faster Websites
Minify your CSS code online for free. Remove whitespace, comments, and redundant code to reduce file size and speed up page loads.
How to Decode a JWT Token Online
Decode and inspect JWT tokens online for free. See the header, payload, and claims of any JSON Web Token instantly.
Generate UUID v4 Online for Free
Generate random UUID v4, ULID, or NanoID values online for free. Copy unique identifiers instantly for your database or API.
How to Generate a SHA-256 Hash Online
Generate SHA-256 hashes online for free. Create MD5, SHA-1, and SHA-512 hashes from any text instantly in your browser.
How to URL Encode Special Characters
URL encode and decode special characters online for free. Fix broken links, encode query parameters, and handle spaces in URLs.
How to Encode and Decode Base64 Online
Encode or decode Base64 strings online for free. Convert text, images, and files to Base64 format instantly in your browser.
Regex to Extract Emails from Text
Get the exact regex pattern to extract email addresses from any text. Test it free online with highlighted matches.
How to Test Regex Patterns Online
Test and debug regex patterns online for free. See matches highlighted in real time with our regex tester. No install needed.
How to Pretty Print JSON Online
Pretty print minified JSON online for free. Turn unreadable one-line JSON into clean, indented format you can actually read.
How to Fix Invalid JSON Errors Fast
Fix invalid JSON errors quickly with our free formatter. Find syntax mistakes, missing brackets, and bad commas instantly.
How to Create a Bar Chart Online Free
Create bar charts, line charts, and pie charts from your data. Free online tool — no signup, download as PNG or SVG.
How to Calculate Aspect Ratio for Video
Calculate video aspect ratios instantly. Find dimensions for 16:9, 4:3, 21:9, and custom ratios. Free online tool.
How to Create a CSS Grid Layout Visually
Design CSS Grid layouts visually with a drag-and-drop tool. Set rows, columns, and gaps. Copy the CSS code free.
How to Create a CSS Box Shadow
Design beautiful CSS box shadows visually. Adjust blur, spread, color, and offset. Copy the code instantly. Free tool.
How to Create a CSS Gradient Background
Create beautiful CSS gradient backgrounds visually. Copy the CSS code instantly. Free online gradient generator tool.
How to Create a Color Palette From a Hex Code
Generate a full color palette from any hex code. Get complementary, analogous, and triadic colors instantly. Free tool.
How to Blur an Image Online for Free
Blur photos online in seconds. Apply Gaussian blur to hide faces, backgrounds, or sensitive info. Free, no signup.
How to Generate Placeholder Images for Wireframes
Create custom placeholder images for mockups and wireframes. Set any size, color, and text. Free, instant download.
How to Create a Favicon From Any Image
Generate a favicon (ICO, PNG, SVG) from any image. Free online tool creates all sizes for browsers and devices.
How to Remove Background From an Image Free
Remove image backgrounds instantly in your browser. Free online tool — no signup, no watermark, 100% private.
How to Crop an Image Into a Circle
Crop any photo into a circle shape for profile pictures and avatars. Free online tool, instant download as PNG.
How to Convert Images to WebP Format
Convert PNG or JPEG images to WebP for smaller files and faster websites. Free online converter, no signup needed.
How to Convert PNG to JPG Online Free
Convert PNG to JPG instantly in your browser. Free online tool — no upload to servers, no signup, no watermark.
How to Convert an Image to Base64 for HTML
Convert any image to a Base64 data URL for embedding directly in HTML or CSS. Free tool, instant conversion.
How to Resize a Photo to Passport Size
Resize any photo to passport size (2x2 inches, 600x600 pixels). Free online tool, no software needed.
How to Resize Images for Instagram
Resize photos to Instagram's exact dimensions. Free online tool for posts, stories, reels, and profile pictures.
How to Compress Images for Your Website
Compress images for faster website loading. Free online tool reduces file size by up to 80% without losing quality.
How to Reduce Image Size for Email
Reduce image file size for email attachments in seconds. Free online compressor — no signup, no software needed.
How to Create a Markdown Table for GitHub
Create Markdown tables for GitHub READMEs visually. No syntax to remember. Build your table, copy the Markdown, and paste it.
How to Get Fancy Fonts for Social Media Bios
Get fancy fonts for Instagram, TikTok, and Twitter bios. Convert plain text to stylish Unicode fonts. Copy and paste for free.
How to Copy Emojis for Your Instagram Bio
Find and copy the perfect emojis for your Instagram bio. Search by keyword, click to copy, and paste into your bio instantly.
How to Type and Learn Morse Code SOS Signal
Learn Morse code for SOS and other common words. Translate text to Morse code dots and dashes instantly with a free online tool.
How to Test Your Typing Speed in WPM
Test your typing speed in words per minute for free. Get your WPM score and accuracy instantly. Tips to type faster included.
How to Make Your Computer Read Text Aloud
Make your computer read any text aloud for free. Convert articles, notes, and documents to speech instantly. No software needed.
How to Preview Markdown Before Publishing
Preview your Markdown as formatted HTML instantly. See headings, links, tables, and code blocks before you publish. Free online tool.
How to Compare Two Text Files Online
Compare two text files side by side online for free. Find differences instantly with highlighted changes. No software to install.
How to Generate Lorem Ipsum for Web Design
Generate lorem ipsum placeholder text for web design mockups. Choose paragraphs, sentences, or words. Free tool, instant results.
How to Count Words in an APA Paper
Count words in your APA paper accurately. Learn what's included in APA word count and meet your assignment's length requirements.
How to Check Word Count for a College Essay
Check your college essay word count instantly for free. Learn exact word limits for Common App, UC, and coalition essays.
How to Make Blog Posts Easier to Read
Make your blog posts easier to read with proven readability tips. Check your score free and boost engagement with simpler writing.
How to Check the Reading Level of Your Writing
Check your writing's reading level instantly with a free tool. Get Flesch-Kincaid grade, readability score, and tips to simplify your text.
How to Organize Tasks With an Online To-Do List
Organize your tasks with a free online to-do list. Create multiple lists, set priorities, and stay productive. No sign-up.
How to Create a Strong Password You Can Remember
Learn how to make strong passwords that are easy to remember. Free password generator creates secure passwords instantly.
How to Make an Invoice as a Freelancer (Free)
Create professional freelance invoices for free. Add your logo, line items, and tax. Download as PDF instantly.
How to Write Meta Tags for SEO (With Examples)
Learn how to write meta title and description tags that boost your SEO. Free meta tag generator with live preview.
How to Make a QR Code for Your WiFi Password
Create a free WiFi QR code so guests connect instantly. No typing passwords. Works on iPhone and Android.
How to Make a QR Code for Your Restaurant Menu
Create a free QR code for your restaurant menu in under a minute. No app needed — just paste your menu URL and download.
How to Calculate Your Final Grade (Weighted)
Calculate your final grade with weighted percentages. Free grade calculator handles homework, exams, and extra credit.
How to Use a Metronome for Guitar Practice
Learn how to practice guitar with a metronome. Free online metronome with tap tempo. Improve timing and speed.
Random Number Between 1 and 100 (Instant Generator)
Generate a random number between 1 and 100 instantly. Free online tool for games, decisions, raffles, and classroom use.
How to Use an Online Stopwatch for Running Laps
Track your running lap times with a free online stopwatch. Records splits, shows averages, and works on any phone.
How to Use the Pomodoro Technique for Studying
Learn the Pomodoro technique for studying: 25-minute focus sessions with short breaks. Free online timer included.
Set a Timer for 20 Minutes Online (With Alarm)
Start a free 20-minute countdown timer with a loud alarm. Works in your browser — no app needed. Great for studying or cooking.
Convert Time Between EST and PST (Quick Chart)
Instantly convert time between EST and PST. Free timezone converter with a quick reference chart. No app needed.
How Old Is My Baby in Weeks? Quick Calculator
Find your baby's exact age in weeks and days. Free calculator for tracking infant milestones, vaccinations, and growth.
How to Calculate Your Exact Age in Days
Find out exactly how many days old you are. Free age calculator shows your age in years, months, weeks, and days instantly.
How to Fix 403 Forbidden Error on a Website
Fix the 403 Forbidden error on your website or API. Learn what causes it and get step-by-step solutions that actually work.
Test HTML CSS JavaScript Online for Free
Write and test HTML, CSS, and JavaScript code online with live preview. Free code playground with instant results, no setup needed.
HTTP Status Codes Explained Simply
Complete guide to HTTP status codes. Learn what 200, 301, 404, 500, and every other status code means in plain English.
How to View CSV Data as a Table Online
View CSV files as interactive tables online. Sort, filter, and search your data instantly. Free tool, no Excel or software needed.
Convert HTML to Markdown for GitHub README
Convert HTML to Markdown format for GitHub READMEs, docs, and blogs. Free online tool handles tables, links, images, and code blocks.
How to Format and Validate XML Online
Format messy XML with proper indentation and validate it for errors. Free online XML formatter with instant results and no signup.
Convert JSON to YAML for Kubernetes Configs
Convert JSON to YAML format for Kubernetes, Docker, and CI/CD configs. Free online tool with instant output and no signup required.
How to Convert YAML to JSON Online
Convert YAML to JSON format instantly with this free online tool. Perfect for Kubernetes configs, CI/CD pipelines, and API development.
How to Convert JSON to CSV for Excel
Convert JSON data to CSV format for Excel in seconds. Free online converter handles nested objects and arrays automatically.
How to Encode HTML Entities for Special Characters
Encode special characters as HTML entities to display them safely on web pages. Free online tool, no coding needed.
How to Decode a JWT Token Without Code
Decode JWT tokens online without writing code. See header, payload, and claims instantly with this free JWT decoder tool.
How to Detect Base64 Encoded Text Online
Detect and decode Base64 encoded text instantly. Free online encoding detector identifies Base64, URL encoding, hex, and JWT tokens.
Calculate Subnet Mask From CIDR Notation
Convert CIDR notation to subnet mask and calculate network details. Free subnet calculator for IPv4 and IPv6. See hosts, range, and more.
Calculate Pregnancy Due Date From Last Period
Calculate your pregnancy due date from your last menstrual period. Free calculator shows weeks, trimester, and key milestones.
How to Measure Body Fat Percentage at Home
Estimate your body fat percentage at home using the Navy method. Free calculator — just need a measuring tape. No equipment required.
How Many Calories to Eat to Lose 10 Pounds
Find out exactly how many calories to eat daily to lose 10 pounds. Free calculator with personalized results based on your body.
Calculate Monthly Loan Payment (EMI Formula)
Calculate your monthly loan payment (EMI) for any loan amount and rate. Free calculator with payment schedule and total interest.
How Compound Interest Works (With Examples)
See how compound interest grows your money with real examples. Free calculator shows yearly breakdown. Start planning your savings.
How Much Mortgage Can I Afford on My Salary
Find out how much mortgage you can afford based on your income. Free calculator with monthly payment breakdown and amortization.
How to Calculate Percentage of a Number
Calculate any percentage of a number instantly. Learn the formula and see examples. Free calculator for tips, discounts, and more.
Convert Plain Text to PDF Document Free
Turn plain text into a formatted PDF document free. Set fonts, margins, and page size. No software needed, works in your browser.
Convert PDF Pages to PNG or JPEG Images
Extract PDF pages as PNG, JPEG, or WebP images free. Choose resolution and format. No upload needed, runs in your browser.
Convert Images to PDF: JPG, PNG to PDF Free
Convert JPG, PNG, and other images to a PDF document free. Combine multiple images into one PDF. No upload, works in your browser.
Merge PDF Files Into One Document Free
Combine multiple PDF files into one document free. No upload, runs in your browser. Drag to reorder pages before merging.
Convert PDF to Word Document Free Online
Convert PDF to Word (DOCX) free online. No sign-up, no upload to servers. Your file stays private in your browser.
Convert Excel to CSV Without Losing Data
Convert XLSX to CSV files without losing formatting or special characters. Free online tool, no upload needed. Works offline.
Convert Text to Binary Code Instantly
Convert any text to binary code free. See the 0s and 1s behind your words. Also converts to hex, octal, and decimal.
USD to EUR: Convert Dollars to Euros Today
Convert USD to EUR with today's exchange rate. Free currency converter for 30+ currencies. Fast, accurate, no sign-up needed.
Convert Unix Timestamp to Readable Date
Convert Unix timestamps to human-readable dates instantly. Free tool handles seconds and milliseconds. See current epoch time.
Celsius to Fahrenheit: Formula and Converter
Convert Celsius to Fahrenheit instantly. Easy formula: multiply by 9/5 and add 32. Free converter with common temperature chart.
Convert Kilograms to Pounds (kg to lbs)
Convert kg to lbs instantly with our free tool. Simple formula: multiply kg by 2.205. Conversion chart and calculator included.
Convert Hexadecimal to Decimal Quickly
Convert hex numbers to decimal in seconds. Free online converter with step-by-step method. Great for programmers and students.
Convert Binary to Decimal: Easy Step-by-Step
Learn how to convert binary numbers to decimal with simple steps. Free converter tool for instant results. Great for students.
HSL to HEX: Convert HSL Colors to HEX Codes
Convert HSL color values to HEX codes instantly. Free tool with live color preview. Perfect for CSS and web design.
How to Convert HEX to RGB for CSS Colors
Convert HEX color codes to RGB values for CSS instantly. Free online tool with live preview. Works for any color code.
50/30/20 Budget Rule: How to Split Your Income
Use the 50/30/20 rule to budget your paycheck. Free calculator splits your income into needs, wants, and savings instantly.
Flip a Coin Online for Quick Decisions
Flip a virtual coin with 3D animation. Fair 50/50 coin toss for quick decisions. Free, instant, works on any device.
Random Name Picker for Teachers and Classrooms
Pick random students fairly in class. Free name picker wheel for teachers — paste your class list and spin. No sign-up needed.
How to Make a Weighted Pros and Cons List
Make better decisions with a weighted pros and cons list. Free tool scores each factor by importance for a clear answer.
Daily Schedule Template for Maximum Productivity
Plan your day with a free daily schedule template. Time-block tasks, set priorities, and get more done with less stress.
How Long Will I Live? Life Expectancy Estimate
Estimate your life expectancy based on health, habits, and lifestyle. Free calculator gives a personalized longevity estimate.
Pick a Random Movie to Watch Tonight
Can't pick a movie? Get personalized movie suggestions by genre, mood, and decade. Free movie recommender, no sign-up needed.
How to Build a Habit That Sticks for Good
Learn how to build habits that actually last. Free habit tracker with streaks helps you stay consistent every day.
Fun Things to Do When Bored at Home
Stuck at home with nothing to do? Get random fun activity ideas instantly. Free activity generator with hundreds of suggestions.
Spin the Wheel to Decide What to Eat
Can't decide what to eat? Spin a custom wheel with your favorite foods and let it choose. Free, fun, no app needed.
How to Make Decisions When You Can't Decide
Stop overthinking and make decisions faster. Free decision-making tools help you choose when you're stuck between options.
Unique Baby Names That Are Not Too Weird
Find unique baby names that stand out without being strange. Browse thousands of names filtered by origin, style, and meaning.
Track Your Mood Daily for Better Mental Health
Start a daily mood journal in under a minute. Free mood tracker helps you spot patterns and improve mental health.
How Many Hours of Sleep Do I Need by Age
Find out exactly how many hours of sleep you need based on your age. Free sleep calculator for babies, kids, teens, and adults.
What Time Should I Go to Bed to Wake Up Refreshed
Find your perfect bedtime based on sleep cycles. Free calculator shows exactly when to sleep to wake up feeling refreshed.