utmanalyticsmarketing
8 minWhat are UTM tags and why are they needed?
UTM parameters are the basis of traffic analytics. We analyze each of the 5 parameters with examples, talk about typical mistakes and best practices.
February 23, 2026Read →
Blog
Guides & Instructions
Articles about marketing, analytics, and development. Each article is linked to a corresponding tool.
a/b testcroconversion
8 minA/B Testing: A Beginner's Guide
How to properly run A/B tests, calculate statistical significance and avoid common mistakes. With examples from e-commerce.
February 23, 2026Read →
regexregular expressionsjavascript
8 minRegular expressions: a complete guide with examples
What is regex, how to read patterns, 10 ready-made regulars for validating email, phone numbers, URLs and dates.
February 23, 2026Read →
base64codingjavascript
8 minBase64: what is it and why is it needed?
Let's explain Base64 in simple words. Where it is used, how to encode and decode, examples in JavaScript.
February 23, 2026Read →
cronlinuxschedule
8 minCron Jobs: The Complete Guide
What is crontab, cron expression syntax, example tasks, common errors and debugging tools.
February 23, 2026Read →
colorhexrgb
8 minHEX, RGB, HSL: what is the difference between color formats
Let's look at four color formats: HEX, RGB, HSL and CMYK. When to use each, how to convert, code examples.
February 23, 2026Read →
youtubethumbnailsmm
8 minHow to download preview (thumbnail) of YouTube video
A detailed guide to downloading YouTube video covers in HD quality. All URL formats, best practices for SMM and content marketing.
February 23, 2026Read →
imagesoptimizationwebp
8 minHow to compress photos without losing quality
A practical guide to image compression for the web. What's the difference between JPEG, PNG and WebP, what quality to choose, and why file size is important for SEO.
February 23, 2026Read →
securitypasswordscybersecurity
8 minHow to create a strong password: complete guide
What makes a password strong, why Math.random() is insecure, how to store passwords, and password security best practices in 2026.
February 23, 2026Read →
open graphseosocial networks
8 minWhat are Open Graph tags and how do they work?
Open Graph tags control how links appear on social networks. Let's look at og:title, og:image, og:description - what to set to increase CTR by 2-3 times.
February 23, 2026Read →
jsonapijavascript
8 minJSON: a complete guide to syntax and working with the format
What is JSON, its syntax, data types, common parsing errors and examples in JavaScript, Python and PHP.
February 23, 2026Read →
roiroasadvertising
8 minHow to calculate ROI and ROAS of advertising: formulas and examples
What is ROI, ROAS, and CPA in marketing. Formulas with examples. How to understand that advertising is paying off and when to turn it off.
February 23, 2026Read →
qr codewi-fimarketing
8 minQR codes: how they work and where they are used
Design of QR codes, error correction standards, application in business. How to create QR for Wi-Fi, business cards, menus and links.
February 23, 2026Read →
utm parseranalyticsgoogle analytics
8 minHow to analyze and parse UTM links
How to extract UTM parameters from an advertising link, automate parsing in Google Sheets and GA4, and use UTM Parser to audit campaigns.
February 23, 2026Read →
a/b testsamplingstatistics
8 minSample size for an A/B test: how to calculate it correctly
Why you can’t stop a test ahead of time, how to calculate the required number of users before launching, and what is test power.
February 23, 2026Read →
whatsapptelegramviber
8 minDirect links for WhatsApp, Telegram and Viber: how to create
How to make a link to open a chat in WhatsApp and Telegram with ready-made text. Application in marketing, advertising and bots.
February 23, 2026Read →
qrгенератормаркетинг
8 minУниверсальный генератор QR-кодов: создание и применение (EN)
Как быстро сгенерировать QR-код для сайта, текста, телефона или email. Настройки уровней коррекции ошибок и форматы скачивания. (EN)
February 23, 2026Read →
GA4AnalyticsGoogle Analytics
8 minGA4 for Beginners: Setup and First Reports
Complete guide to Google Analytics 4: how to set it up, key reports, events and UTM tracking.
February 23, 2026Read →
WhatsAppTelegramViber
8 minHow to Create Messenger Links: WhatsApp, Telegram, Viber
Ready-made deep link formats for WhatsApp, Telegram, Viber and other messengers for marketing.
February 23, 2026Read →
SEOTechnical SEOCore Web Vitals
8 minTechnical SEO: 10 Key Factors in 2026
Technical SEO checklist: HTTPS, Core Web Vitals, structured data, mobile, hreflang and canonical.
February 23, 2026Read →
CROConversionUX
8 minCRO: 15 Ways to Increase Website Conversion
Proven CRO methods: CTA testing, speed improvement, persuasive copy, forms and social proof.
February 23, 2026Read →
APIRESTJSON
8 minHow to Work with REST APIs: Requests, Responses, Authentication
Practical REST API guide: HTTP methods, headers, JSON responses, error codes and authentication.
February 23, 2026Read →
SecurityBreachPasswords
8 minPassword Leaks 2024-2026: How to Protect Yourself
Major data breaches, how to check your password in breach databases, what to do if hacked.
February 23, 2026Read →
WebPImagesOptimization
8 minWebP: The New Image Standard for the Web
What WebP is, how to convert PNG and JPEG to WebP, browser support and real traffic savings.
February 23, 2026Read →
LCPCore Web VitalsPerformance
8 minLCP: How to Improve Largest Contentful Paint Under 2.5s
Detailed guide to optimizing LCP — the main page load metric. Images, fonts, server time.
February 23, 2026Read →
EmailUTMNewsletters
8 minUTM Parameters for Email Campaigns: Best Practices
How to correctly tag email newsletter links for GA4. utm_medium=email standard, segmentation tips.
February 23, 2026Read →
Code ReviewDevelopmentTeamwork
8 minCode Review: How to Check Code Effectively
Code review checklist, common issues, constructive feedback rules and automation tools.
February 23, 2026Read →
A/B TestMVTCRO
8 minA/B Test vs Multivariate Test: When to Use Which
How Multivariate Testing differs from A/B testing, traffic requirements for each, real examples.
February 23, 2026Read →
DockerCronDevOps
8 minDocker and cron Inside a Container: Setup Guide
Running cron jobs in Docker containers, dockerfile for scheduler, best practices and common issues.
February 23, 2026Read →
HTMLImagesResponsive
8 minResponsive Images in HTML: srcset and sizes
How to use srcset and sizes attributes to deliver optimal images for every device.
February 23, 2026Read →
TelegramMarketingMessenger Marketing
8 minTelegram for Marketing: Channels, Bots and Deep Links
How to use Telegram in your marketing strategy: channels, bots, direct links for advertising.
February 23, 2026Read →
PWAWebJavaScript
8 minPWA: How to Make Your Website a Smartphone App
What a Progressive Web App is, capabilities, manifest.json setup, Service Worker and meta tags.
February 23, 2026Read →
JavaScriptPerformanceOptimization
8 minJavaScript Performance: 10 Tips for Faster Code
How to speed up JavaScript: debounce, throttle, lazy loading, Web Workers, memoization and DOM.
February 23, 2026Read →
QR CodeBusiness CardvCard
8 minQR Code for Business Cards: Complete Guide
How to create a QR code for business cards with vCard, what data to include, print sizes and design tips.
February 23, 2026Read →
regexданныеочистка
9 minРегулярные выражения для очистки данных: практические примеры
Как использовать regex для удаления лишних пробелов, спецсимволов и форматирования текста.
March 1, 2026Read →
производительностьjsonоптимизация
6 minМинификация кода: как это ускоряет ваш сайт
Почему удаление лишних знаков в JSON и коде важно для производительности и SEO.
March 2, 2026Read →
jwtбезопасностьbase64
10 minЧто такое JWT: структура, безопасность и Base64
Разбираем JSON Web Tokens: заголовок, нагрузка и подпись. Роль Base64 в аутентификации.
March 3, 2026Read →
дизайнцветcro
8 minПсихология цвета в маркетинге и её влияние на конверсию
Как выбор цвета кнопок и фона влияет на поведение пользователей и продажи.
March 4, 2026Read →
wi-fiqr-кодбезопасность
5 minКак настроить гостевой Wi-Fi через QR-код
Пошаговое руководство по созданию безопасного QR-кода для вашей домашней или офисной сети.
March 5, 2026Read →
roiаналитикамаркетинг
12 minРасчёт ROI маркетинга в 2026 году: новые вызовы
Как изменились подходы к оценке окупаемости рекламы с приходом ИИ и новых систем аналитики.
March 6, 2026Read →
a/b тестcroошибки
11 min7 фатальных ошибок в A/B тестировании
Почему ваши тесты могут врать: недостаточная выборка, подглядывание и другие ошибки.
March 7, 2026Read →
безопасностьпаролименеджер паролей
9 minЛучшие практики управления паролями в 2026 году
Как не забыть сотни паролей и при этом оставаться в безопасности.
March 8, 2026Read →
youtubeдизайнctr
7 minОптимизация обложек YouTube для высокого CTR
Как сделать превью, на которое хочется кликнуть: лица, текст, контраст.
March 9, 2026Read →
кодировкиразработкаbase64
6 minBase64 против ASCII: в чем разница?
Разбираемся в кодировках: когда использовать текстовый формат, а когда бинарный.
March 10, 2026Read →
cronlinuxбэкап
8 minНастройка Cron задач для автоматического бэкапа
Как автоматизировать резервное копирование ваших данных на сервере.
March 11, 2026Read →
facebook adsutmреклама
9 minИспользование UTM-меток в Facebook Ads
Как правильно размечать рекламу в Meta, чтобы видеть все продажи в Google Analytics.
March 12, 2026Read →
webpпроизводительностьcore web vitals
7 minУлучшение Core Web Vitals с помощью формата WebP
Как переход на WebP помогает пройти проверку Google PageSpeed.
March 13, 2026Read →
seoe-e-a-tдоверие
8 minПочему политика конфиденциальности важна для вашего SEO
Как легальные страницы влияют на доверие поисковиков (E-E-A-T).
March 14, 2026Read →
продуктивностьинструментыобзор
5 minКак использовать Tools Hub для повышения продуктивности
Обзор наших бесплатных инструментов для маркетологов и разработчиков.
March 15, 2026Read →
regexразработкаалгоритмы
12 minПродвинутый Regex: Lookahead и Lookbehind
Разбираемся в сложных конструкциях регулярных выражений для экспертного поиска.
March 16, 2026Read →