Javier Tenjo runs Einscube, the web engineering and automation studio that has operated out of Bogotá since 2008, building websites, stores and custom systems for companies in Colombia and abroad, and supporting many of them for years.
Javier writes about what comes up in that work: technical SEO, performance, migrations, security and process automation, and is also the author of LintGrafía, the Chrome extension that checks a page’s spelling the way its visitors see it.
More about the studio on About us, and about the extension on LintGrafía.
Articles47
- Critical PHP and Node.js vulnerabilities: what happened and what to do
- How can you tell how popular a website is?
- Your public IP address: what is it, and what does it reveal?
- What is a Unix timestamp, and why do so many systems use it?
- How to recover a site’s old URLs before migrating it
- Does HTML validation matter for SEO?
- Why are forgotten subdomains a security risk?
- Which GA4 events should your online shop track?
- What is IndexNow, and is it worth using?
- Cron expressions explained: how to read and write them
- What to automate first when everything looks automatable
- Migrating off WordPress without losing your SEO
- What to do if Google flags your site as dangerous
- How do broken links affect your website and your SEO?
- How to find out what a website is built with
- What is hreflang, and how do you set it up without errors?
- How to create strong passwords and actually manage them
- How to check if your password was leaked
- 301 vs 302 redirects: what is the difference?
- Why does a DNS change take time to propagate?
- What is an XML sitemap, and what should yours contain?
- What is Open Graph, and why does your link show no image?
- What is a vulnerability, and why does your website need maintenance?
- What happens when a domain expires?
- What is structured data, and what can you expect from it?
- LintGrafía: spell-check a website the way your customers see it
- HTTP security headers: which ones does your website need?
- What are UTM parameters, and how do you use them well?
- What robots.txt does, and how to decide what to do about AI crawlers
- How to write title tags and meta descriptions
- WhatsApp click-to-chat links for your business
- What are SPF, DKIM and DMARC, and why do your emails land in spam?
- What are Core Web Vitals, and how do you read them?
- Why does web accessibility matter?
- Responsive design: why it still matters and what actually gets measured
- Images for your website: which format to use and what size
- What is an SVG, and why is it worth using?
- How do QR codes work?
- Backlinks: more than links, authority and reputation
- Search intent: the absolute key to keyword research and SEO
- What is usability from your user's perspective? And a few tips
- Everything you need to know about how a search engine works
- From keywords to experiences: how search engines have evolved
- Access to information: how search engines changed the world
- The digital customer: 10 keys to understanding your buyers today
- SEO from zero: the complete guide to search rankings
- How do you contact a business through Google Maps?
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