Tips & Guides
Practical articles to help you get the most out of everyday digital tasks.
Image Size Guide for Instagram, YouTube, and Social Media
A complete reference of recommended image dimensions for every major platform. Learn how to resize your images to exact pixel sizes before uploading.
How to Remove Image Backgrounds for Free
A step-by-step guide to removing backgrounds using AI in your browser — no installation needed. Covers e-commerce product photos, profile images, and more.
What Is JSON? A Plain-Language Explanation
JSON explained simply — what it is, how it is structured, and where it is used in the real world. Includes examples for APIs, config files, and data exchange.
VAT Calculation Guide — How to Split Supply Price and Tax Correctly
A clear explanation of how VAT works in Korea: the relationship between supply price and total amount, the 10% rate, and common calculation mistakes to avoid.
How to Reduce Image File Size — PNG, JPG, and WEBP Explained
A practical guide to image compression: the differences between PNG, JPG, and WEBP, when to use each format, and how to reduce file size without visible quality loss.
MBTI 16 Types Guide — What Does Your Personality Type Mean?
An overview of all 16 MBTI personality types: what the E/I, S/N, T/F, and J/P dimensions mean, and the key traits, strengths, and tendencies of each type.
What Is an IP Address? Public IP, Private IP, IPv4, and IPv6 Explained
A plain-language explanation of IP addresses: the difference between public and private IPs, IPv4 vs. IPv6, how to find your own IP, and what a VPN does to it.
PDF and Image Conversion Guide — When and How to Use Each
When should you merge images into a PDF vs. extract PDF pages as images? This guide explains the best use cases for each direction and what to watch out for.
Color Combination Basics — Complementary, Analogous, and Triadic Colors
A beginner-friendly guide to color theory: complementary, analogous, triadic, split-complementary, and monochromatic combinations explained with practical design tips.
Character Limits by Platform — Twitter, Instagram, SMS, and More
A complete reference of character limits for Twitter/X, Instagram, SMS, YouTube, and other major platforms. Includes notes on how Korean text differs from English in character counting.