Blog
By Siavash Ghanbari ยท Founder of Emojar
๐๏ธHow to Make a Clear Timeline: Layouts, Spacing and Export
When to use proportional or even spacing, horizontal or vertical layouts, and SVG or PNG export, with a worked example built from a five-event project plan.
Tool GuideProductivityTimelineDesign๐How to Make a Mesh Gradient in CSS Without Any Image File
CSS has no mesh gradient, but stacked radial-gradient() layers come close. See how the layers work, with the exact code for an aurora background.
Tool GuideColorCSSGradients๐๏ธHow to Make a Video File Smaller โ Which Settings Actually Matter
Resolution, quality or format? A practical guide to shrinking a video for email or chat, with worked bitrate maths and the settings that save the most space.
Tool GuideAudio & VideoVideoCompressionโ๏ธHow to Make a Weighted Decision Matrix (With a Worked Example)
Pick criteria, set weights, score each option and let the arithmetic rank them. A step-by-step weighted scoring example, plus how to read ties and close calls.
Tool GuideProductivityDecision MakingExplainer๐กHow to Read an ASCII Table, From A = 65 to the Control Codes
Why ASCII stops at 127, how decimal, hex, octal and binary columns line up, and what control codes like LF, CR and ESC still do in files and terminals today.
Tool GuideDeveloperASCIIEncodingโ๏ธHow to Read the Periodic Table, With Iron as a Worked Example
What periods, groups, blocks and bracketed masses mean, and how to look up any element's configuration, melting point and density in seconds.
Tool GuideReferenceChemistryPeriodic Table๐How to Remove UTM Tags and Edit a URL's Query String
A walkthrough of cleaning a tracked link, decoding a nested redirect URL and adding a parameter safely, with the exact output you should expect.
Tool GuideDeveloperURLsMarketing๐How to Schedule a Meeting Across Time Zones Without Mistakes
A worked example of planning a call between London, New York, California and India, including the daylight saving weeks that quietly shift everyone's time.
Tool GuideDate & TimeTime ZonesRemote Work๐ฅHow to Split a Group Into Fair Random Teams (With Captains)
A practical walkthrough for coaches, teachers and game-night hosts on splitting people into even random teams, using captains and avoiding common mix-ups.
Tool GuideGeneratorsTeamsClassroomโ๏ธHow to Trim a Video Without Losing Quality (Fast vs Precise Cuts)
Why a lossless video cut can start a moment early, how keyframes and GOPs work, and when to choose fast stream copy or a frame-exact re-encode.
Tool GuideAudio & VideoVideoHow-to๐How to Turn JSON API Data Into a Spreadsheet (CSV)
Convert an array of JSON objects into a CSV file that opens in Excel or Google Sheets, and see how nested objects, arrays and missing fields are handled.
Tool GuideDeveloperJSONCSVโHow to Type Math Symbols in Documents, LaTeX and HTML
One symbol, three forms. How to choose between pasting โ, writing \sum in LaTeX or using an HTML entity, and how to avoid look-alikes such as ฮฃ versus โ.
Tool GuideReferenceMathLaTeX๐จHow to Unminify CSS and Debug a Production Stylesheet
A walkthrough for tracking down a style override in minified production CSS: beautify it, find the rule, understand the cascade, and fix it at the source.
Tool GuideDeveloperCSSDebugging#๏ธโฃHow to Verify a Downloaded File with a SHA-256 Checksum
A step-by-step walkthrough for checking that an installer or ISO is exactly what the publisher released, plus what a mismatch means and what it can't prove.
Tool GuideGeneratorsSecurityChecksumsโฑ๏ธHow TOTP 2FA Codes Are Calculated, With a Worked Example
A six-digit 2FA code is just a shared secret plus the current time, run through HMAC. Here's the math step by step, checked against the RFC 6238 test vectors.
Tool GuideDeveloperSecurity2FA๐ท๏ธHow XML Formatting Works and When Whitespace Matters
What an XML beautifier actually does to your document, how it finds mismatched tags, and why minifying mixed-content XML can change your text.
Tool GuideDeveloperXMLFormattingโกhp, PS, Electrical hp and BTU/h: Power Ratings Explained
Why a 150 PS car is "only" 148 hp, what an electric motor's hp means, and how many kilowatts a 12,000 BTU/h air conditioner really delivers.
Tool GuideUnitsCarsHome๐จHSL to RGB: Why Same Lightness Doesn't Mean Same Contrast
Pure yellow and pure blue share 50% HSL lightness yet differ eightfold in contrast with white. Why converting HSL to RGB matters for accessible colors.
Tool GuideColorAccessibilityCSSโ๏ธIdeal Body Weight Formulas: Five Myths, Checked With Numbers
Devine, Robinson, Miller and Hamwi give four different answers for the same height. Here is what those formulas were built for and what they can't tell you.
Tool GuideCalculatorsHealthMyths๐ปInvisible Character Not Working? Fixes for Names and Hidden Bugs
Why apps reject blank names, why a pasted password suddenly fails, and how to find and remove zero-width spaces and other hidden characters.
Tool GuideTextUnicodeTroubleshooting