MetisTools Blog
Tips, guides, and updates about our tools
Case Converter: Instantly Transform Text Case (UPPER, lower, Title & More)
Convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, and more. Free online case converter for writers and developers.
BMI Calculator Guide: Track Your Healthy Weight Range (2026)
Learn how to calculate your BMI, understand weight categories, and use our free BMI calculator. No signup, instant results with metric and imperial support.
Currency Converter Guide: Real-Time Exchange Rates for 170+ Currencies
Convert between 170+ currencies with live exchange rates. Free online currency converter for travel, business, and shopping. No signup required.
Date Difference Calculator: Find Days, Weeks & Months Between Dates
Calculate exact days between any two dates with our free date difference calculator. Business day mode, date addition, and subtraction included.
Encode & Decode Online: Base64, URL, HTML & More (Free Tool)
Encode and decode Base64, URL, HTML entities, Hex, and more. Free online encoding/decoding tool for developers. Auto-detect input type. No signup.
Image Cropper & Resizer: Crop, Resize & Transform Images Online
Crop, resize, rotate, and flip images online for free. Social media presets, drag-to-crop, and aspect ratio locking. No upload — local processing.
Image Format Converter: Convert PNG, JPEG & WebP (Free Online Tool)
Convert images between PNG, JPEG, and WebP formats online. Adjustable quality, optional resize, and batch support. All processing happens locally.
Loan Calculator: Calculate Monthly Payments & Total Interest (Free)
Master your loan planning with our free loan calculator. Calculate monthly payments, total interest, and view full amortization schedules. No signup needed.
Image Compressor Guide: Reduce Image File Size Without Losing Quality
Compress JPEG, PNG, and WebP images online for free. Reduce file size by up to 90% while keeping visual quality. No upload — all local processing.
Lorem Ipsum Generator: Create Placeholder Text for Designs & Mockups
Generate Lorem Ipsum placeholder text in paragraphs, sentences, words, or characters. Free online dummy text generator for designers and developers.
Percentage Calculator: 5 Ways to Calculate Percentages Instantly
Learn how to calculate percentages with our free online tool. Find percentage of a number, percentage change, increase/decrease, and more. No signup.
QR Code Generator: Create Free QR Codes for URLs, WiFi, vCards & More
Generate professional QR codes for URLs, text, WiFi credentials, and vCards. Customize colors, download as PNG/SVG. Free online QR code generator.
Regex Tester: Test Regular Expressions Online with Real-Time Matching
Test regular expressions with live matching, group extraction, and replace mode. Free online regex tester with pattern reference library. No signup.
Sort & Shuffle Lines: Alphabetize, Sort Numerically & Randomize Text
Sort lines alphabetically (A-Z or Z-A), numerically, or randomly shuffle. Free online text sorter for lists, data prep, and randomization.
Text Analyzer: Count Words, Characters & Check Readability (Free)
Analyze text with word count, character count, readability scores, keyword density, and reading time. Free online text analyzer for writers and SEO.
Remove Duplicate Lines: Clean & Deduplicate Text Instantly (Free)
Remove duplicate lines, empty lines, and trim whitespace from text. Free online text cleaner for data processing, log files, and lists. No signup.
Unix Timestamp Converter: Master Epoch Time Conversion (Developer Guide)
Learn to convert Unix timestamps to human-readable dates and back. Free online epoch time converter with live current timestamp. Developer-friendly.
Free vs. Paid Online Tools: A Survival Analysis
Exploring the economics of free tool platforms, why many fail, and how MetisTools stays alive without charging users.
The Future of MetisTools: What’s Coming Next
From AI‑powered tools to offline support – my vision for the next phase of MetisTools.
My Journey Building MetisTools: From Idea to Launch
Read about the story behind MetisTools – why I built it, the challenges I faced, and what keeps me motivated.
Why You See Ads (And How You Can Support MetisTools)
An honest explanation of why we show ads, how they work, and how you can help keep the site free.
What’s Not Perfect Yet – And How You Can Help
An honest list of MetisTools’ current limitations and imperfections. Transparency is key.
A Beginner's Guide to Color Codes: HEX, RGB, and HSL Explained
Learn how to convert between HEX, RGB, and HSL color formats. Free online color converter tool.
Age Calculator: More Than Just a Birthday Countdown
Calculate exact age in years, months, and days. Use our free age calculator for health, legal, and personal purposes.
How to Convert PDF to Word for Free (And Keep Formatting)
Learn the easiest way to convert PDF files to editable Word documents without losing layout. 100% free and private.
Clean Code, Happy Life: How to Beautify Your HTML/CSS/JS
Learn why code formatting matters and how to beautify your HTML, CSS, JavaScript online. Free code beautifier.
The Secret to a Strong Password: Why and How to Generate One
Learn why weak passwords are dangerous and how to create strong, random passwords using our free password generator.
The Ultimate Guide to Using a Tip Calculator (Never Split Bill Again)
Stop doing mental math at restaurants. Learn how to use a tip calculator to split bills fairly and tip the right amount.
Unit Converter 101: How to Convert Like a Pro
Master length, weight, temperature, and other unit conversions with our free online unit converter tool.
Mastering JSON: How to Format and Minify Your Data
Learn to beautify JSON for readability and minify for performance. Free online JSON formatter and minifier.
What Is a JWT? Decode and Understand JSON Web Tokens
Learn how JSON Web Tokens (JWT) work. Use our free JWT decoder to inspect header, payload, and signature.
Why Use a UUID Generator? (And How It Works)
Learn what UUIDs are, why they are useful, and how to generate random UUID v4 online for free.