Guides & How-Tos
Practical, worked explanations of the problems our tools solve — read the guide, then try it in the matching tool.
How to Fix Common JSON Errors: Trailing Commas, Single Quotes, Comments and LLM Output
Why JSON.parse fails and how to fix it: trailing commas, single quotes, comments, unescaped characters, NaN, and messy JSON returned by AI models.
Read guide ›Unix Timestamps Explained: Seconds vs Milliseconds, Time Zones and the Year 2038 Problem
What a Unix timestamp really counts, how to tell seconds from milliseconds, why time zones do not apply, the 2038 limit, and epoch code for common languages.
Read guide ›A Practical UTM Naming Convention for Small Teams (and How GA4 Reads It)
A simple UTM tagging convention: required parameters, lowercase rules, values that map to GA4 default channel groups, and the mistakes that create unassigned traffic.
Read guide ›Robots.txt vs Noindex vs Canonical: Which One to Use and When
Robots.txt controls crawling, noindex controls indexing, canonical consolidates duplicates. Learn which to use for filters, staging, PDFs, and thin pages.
Read guide ›Core Web Vitals in Plain English: LCP, INP, CLS and the Fixes That Matter Most
What LCP, INP and CLS measure, the good thresholds, why lab and field data disagree, and the specific fixes that move each metric on real sites.
Read guide ›How to Write Google Ads Responsive Search Ads That Fit the Limits and Perform
Responsive Search Ad limits (15 headlines of 30 characters, 4 descriptions of 90), how to plan assets, when to pin, and what Ad Strength does and does not mean.
Read guide ›How EMI Is Calculated and Whether You Should Prepay Your Loan
The reducing-balance EMI formula with a worked ₹20 lakh example, why early EMIs are mostly interest, and how prepaying compares when you cut tenure vs EMI.
Read guide ›Compressing Images for the Web: JPG vs PNG vs WebP, Quality Settings and Dimensions
Choose the right image format, pick quality settings that do not show, resize to the displayed width, and see why image weight drives page speed.
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