Blog
By Siavash Ghanbari · Founder of Emojar
✒️What Size Should You Export an SVG to PNG? A Practical Guide
Exporting an SVG logo or icon to PNG? Pick the right pixel width for screens, retina displays and print, and avoid missing fonts and blurry results.
Tool GuideImageSVGImages🧾What to Include on an Invoice: A Practical Checklist
A field-by-field invoice checklist with a worked tax and discount example, plus the number-format mistakes that quietly turn a line item into zero.
Tool GuideGeneratorsBusinessInvoices⚖️What Your BMI Tells You (and What It Misses)
BMI is a quick screening number, not a verdict on your health. Learn how it is calculated, what the WHO categories mean and when BMI is misleading.
Tool GuideCalculatorsHealthExplainer🔎What Your Photo's Metadata Reveals – A Pre-Sharing Checklist
Photos can carry your GPS location, the exact time, your camera and even your name. Here's what to check before sharing an original file, and how to clean it.
Tool GuideImagePrivacyImages🔡When Should You Inline an Image as Base64? A Decision Guide
Base64 data URIs save an HTTP request but add a third to the file size and can't be cached separately. When inlining images helps, and when it hurts.
Tool GuideImageWeb DevelopmentImages🅰️When to Use ALL CAPS (and When to Let CSS Do It)
Seven practical places where uppercase text works, a few where it backfires, and why typing capitals isn't always the same as styling them.
Tool GuideTextWritingTypography🔓Where Base64 Hides in Your Stack, and How to Decode It
Basic auth headers, Kubernetes secrets, data URLs, JWT parts, email bodies. Six places Base64 shows up, how to recognize it, and what decoding tells you.
Tool GuideDeveloperBase64Debugging▥Which Barcode Format Should You Use? Code 128, EAN-13, UPC
Code 128 for internal labels, EAN-13 or UPC-A for retail, ITF-14 for cartons. A plain-English guide to choosing a barcode type, with check digit examples.
Tool GuideGeneratorsBarcodesRetail🚦Which HTTP Status Code Should You Return? A Decision Guide
301 or 308? 404 or 410? 401, 403 or 422? A practical guide to picking the right HTTP status code for redirects, errors, logins and maintenance.
Tool GuideDeveloperHTTPAPIs🔀Why "Item 10" Sorts Before "Item 2" (Natural Sort Explained)
Alphabetical, ASCII and natural sort order give different results for the same list. Here's how each works and which one to choose for your data.
Tool GuideTextListsSorting⏳Why a Month Is 30.44 Days in Time Conversions
Seconds, hours and weeks convert exactly, but months and years don't. Here's how average month and year lengths work, and when to use a date tool instead.
Tool GuideUnitsTimeExplainer🧾Why a PDF Form Won't Fill In, and How to Fix It
No fields found, an XFA warning, answers missing in someone else's viewer, or a box that cuts you off? What each PDF form problem means and what to do next.
Tool GuidePDFFormsTroubleshooting💾Why Does My 1 TB Drive Show 931 GB? GB vs GiB Explained
Your new drive isn't missing space. The gap comes from decimal GB vs binary GiB, and bits vs bytes explains slow downloads. Here's how to convert both.
Tool GuideUnitsTechStorage🎯Why Does My CSS Rule Lose? Specificity Scores Explained
How browsers score selectors as (a, b, c), how :is(), :not(), :has() and :where() count under Selectors Level 4, and how ties are broken.
Tool GuideDeveloperCSSFront End🗺️Why Is It Night There? How to Read a Live Day and Night Map
How the shaded night side of a world map is calculated from the sun's position, what the 15° stripes mean, and how to compare UTC offsets and daylight saving.
Tool GuideDate & TimeTime ZonesMaps📃Why PDF Text Extraction Comes Out Empty or Jumbled (and Fixes)
Extracted text from a PDF and got nothing, mixed-up columns or gibberish? Here's what causes each problem and how to clean up the result quickly.
Tool GuidePDFTextTroubleshooting🔃Why Photos Show Up Sideways (and How to Fix Them for Good)
Your photo looks fine on your phone but sideways once uploaded or emailed. Here's what causes it, how to fix it permanently, and how to straighten tilted shots.
Tool GuideImageImagesRotate🔁Why Reversing Text Breaks Emoji (and How to Do It Properly)
Reversing a string looks trivial until a flag or family emoji falls apart. How grapheme clusters work, what each reverse mode does, and where reversing helps.
Tool GuideTextUnicodeHow it works🧾Why Subtracting 20% Doesn't Remove 20% VAT
Taking 20% off a VAT-inclusive price gives the wrong net amount. Here's why, how to remove VAT correctly and how to fix other common VAT mistakes.
Tool GuideCalculatorsFinanceTax📷Why Won't My QR Code Scan? Common Causes and Fixes
Blurry photos, low contrast, glare, a blocked camera or a code that isn't a QR code at all. How to fix a QR code that won't read, and scan it safely.
Tool GuideGeneratorsQR CodesTroubleshooting