Tools, Tips & Tutorials
Expert guides on image optimization, PDF tools, AI writing, web performance, and developer productivity.
How to Create Strong Passwords That Hackers Can't Crack
'123456' is still the most common password in 2025. Here's the actual science of what makes passwords strong.
JSON Explained: A Beginner's Guide to Understanding JSON Data
JSON is the language the internet uses to pass data between apps. Six data types, two rules — then everything clicks.
Image SEO: How to Optimize Images for Google Rankings
Google Image Search is 22.6% of all web searches. Most sites ignore it completely.
Why Your Website's Images Are Killing Your Page Speed
The average webpage is 2.5MB. Images are half of that.
How to Calculate GPA in Pakistan: Complete Guide for Students
Pakistani university grading follows the 4.0 scale. Here's exactly how to calculate your CGPA and what it means.
Instagram Hashtag Strategy in 2025: What Actually Works
Instagram changed how hashtags work — most advice online is outdated.
PDF Security: How to Protect Your Documents (And When Not To)
Most people think highlighting text black makes it unreadable. It doesn't. Here's how PDF security actually works.
Title Case vs Sentence Case: When to Use Each (With Examples)
Inconsistent capitalisation undermines professional credibility. Here's the exact rule for every style guide.
Celsius, Fahrenheit, and Kelvin: Why Three Temperature Scales Exist
Three scales exist because three different people invented them for three different purposes, a century apart.
True Random vs Pseudo-Random: How Random Number Generators Actually Work
Your computer can't actually generate a truly random number. Here's how it fakes randomness — and why it matters.
How to Calculate Days Between Dates: Common Questions Answered
Date calculations seem simple until you hit edge cases: leap years, month-end overflow, timezones.
Free Online Tools vs Desktop Software: Which Should You Use?
Most online tools upload your files to someone else's server. We built GMC Tools differently.
How to Convert JPG to PNG (And When You Actually Should)
JPG and PNG look similar but they behave very differently. Here is when switching formats helps — and when it just makes your file bigger for no reason.
How to Split a PDF Into Separate Pages — Simple Step-by-Step Guide
Got a big PDF and only need a few pages from it? Here is the easiest way to pull out exactly the pages you want — for free.
What Is WebP? A Simple Guide to the Format That Makes Images Smaller
WebP makes your images load faster without looking any different. Here is what it is, why it matters, and how to use it even if you have never heard of it before.
How to Calculate Percentages: The Easiest Guide (With Real Examples)
Percentages show up everywhere — from exam scores to shopping discounts. Here is how to calculate them easily, with examples even a child can follow.
How to Convert Images to PDF — Free, Fast, and Private
Need to turn your photos into a PDF document? Here is the fastest way to do it without any apps, software, or uploading your images to the internet.
How to Count Words in Any Document — Free Online Word Counter
Whether you are writing an essay, a tweet, or a blog post, knowing your word count matters. Here is the fastest and easiest way to check it.
How to Make a Strong Password — A Simple Guide Anyone Can Follow
Most passwords people use can be guessed in under a minute. Here is what actually makes a password strong — explained simply — and how to create one instantly for free.
How to Resize Images for Any Platform — The Right Size Every Time
Upload the wrong size image and it gets cropped, stretched, or blurry. Here are the exact dimensions for every platform and how to resize images in seconds for free.