Blog
By Siavash Ghanbari · Founder of Emojar
🪪How to Preview a Link Card Before You Share It on Social Media
How Open Graph link cards are built, which image size and text lengths work, and a worked example of mocking up a share card before publishing.
Tool GuideDeveloperSocial MediaOpen Graph🔍How to Validate JSON-LD Structured Data and Fix Common Errors
What a JSON-LD check looks for, how to read errors and warnings by JSON path, and a worked example of fixing broken Article markup step by step.
Tool GuideDeveloperSEOStructured Data⚛️HTML to JSX: What Changes When You Move Markup into React
Pasting HTML into a React component breaks on class, style strings, unclosed tags and braces. Here is every change a converter makes, and what to fix yourself.
Tool GuideDeveloperReactJSX📑Turn CSV or Spreadsheet Data into a Markdown Table
Paste CSV or cells copied from Excel and get a GitHub Markdown table for a README, pull request or wiki, with alignment, escaped pipes and line breaks.
Tool GuideDeveloperMarkdownCSV🎫Debugging 401s With a JWT Decoder: A Claim-by-Claim Checklist
When an API rejects your token, decode it and check exp, nbf, aud, iss, alg and the rest in order. A practical checklist for JWT authentication bugs.
Tool GuideDeveloperJWTAuthentication📦Does Minifying JSON Still Matter If You Use Gzip?
Minified JSON is much smaller as raw text, but the gap shrinks once gzip or Brotli is applied. Real numbers, and the cases where minifying still pays off.
Tool GuideDeveloperJSONPerformance✅9 Common JSON Syntax Errors and How to Fix Each One
Trailing commas, single quotes, comments, NaN, leading zeros. See the error message each mistake produces and the one-line fix for it.
Tool GuideDeveloperJSONTroubleshooting🧾How to Pretty-Print JSON API Responses and Compare Them
Turn a one-line API response into readable, indented JSON, then sort keys so two payloads diff cleanly. A practical walkthrough with examples.
Tool GuideDeveloperJSONAPIs🔍Emoji Unicode Inspector — See Every Codepoint Instantly
Paste any text and instantly see the Unicode codepoints, names, versions, and categories for every character. Built for developers and emoji enthusiasts.
Tool GuideUnicodeDeveloper