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Content based on real data about AI Visibility, SEO, marketing automation and the tools we build.
What is Perplexity AI and how does it work? 2026 guide
What Perplexity AI is, how it searches and cites, what Pro and Max cost, the student plan, and who owns it. Current as of November 2026, with our own data....
What is ChatGPT and how does it work? 2026 guide
What ChatGPT is, how it works, what each plan costs and where its sources come from. Current as of November 2026, with a section for websites and brands....
ChatGPT Shopping: How Products Appear in ChatGPT Answers
What ChatGPT Shopping shows, what happened to Instant Checkout, how products get in and which stores block its crawler, from our own measurement....
Google Rankings in Flux: What the Volatility from August 1–6, 2026 Actually Shows
Between August 1 and 6, part of the industry saw a lot of movement at Google, but tracking tools don't agree. Here's what to check before you touch your site....
AI Overviews and Traffic: What the Data Shows and What You Can Do
When an AI Overview appears, people click less: several measurements agree on that, though not on how much. Cited brands do better than uncited ones, but below ...
GEO is not a silver bullet: what the new AI-visibility narrative leaves out
There's a narrative that frames GEO as if someone had finally cracked AI visibility. If you actually build with these systems, the picture is different — and th...
In-house Search Engine Instead of SaaS: What We Built in Our Test Shop in 24 Hours
Mercadona replaced its product search with its own search engine, built with the help of AI, and cut its cost by 94%. We followed the same path in our own test ...
B2B SEO for Manufacturers: The Channel You're Not Exploiting
SEO is the B2B marketing channel with the highest ROI. Yet, almost no one does it well. In the B2C world, SEO is a mature and highly competitive discipline. But...
Hotel SEO: how to win direct bookings alongside Booking and Expedia
For searches like "hotels in London", the top organic results are portals and chains, and a good article won't change that on its own....
e-Commerce SEO: The Complete Guide 2026
e-Commerce SEO: The Complete Guide 2026. e-Commerce SEO is likely the most complex discipline within web positioning. You not only need to master the fundamenta...
Marketing Automation: From Visitor to Customer on Autopilot
Most of the leads you generate aren't ready to buy. Marketing Automation prepares them. You generate leads with SEO, Google Ads, and content. But most don't buy...
Amazon SEO: how to do it and how it differs from Google SEO
Amazon SEO means preparing a product listing so it shows up in the store's search and persuades the people who land on it. What the term covers and where its ja...
Headless CMS and SEO: Advantages, Pitfalls, and Our Experience with Astro
Headless CMS is the future. But if implemented incorrectly, you risk losing all your organic traffic. Headless architecture separates the CMS from the frontend....
INP vs FID: The Core Web Vitals Change Nobody Saw Coming
In March 2024, Google changed a Core Web Vital. Most websites have yet to adapt. First Input Delay (FID) was the interactivity metric for Core Web Vitals since ...
Website migration: how to limit traffic loss, step by step
A website migration goes well when every old URL leads to its new equivalent, Google can crawl the new site without being blocked, and someone watches old and n...
Core Web Vitals: Why Your Developer Gets It Wrong
Most Developers Optimise Core Web Vitals for the Wrong Metric Many developers who “optimise” CWV do it incorrectly. Not because they are bad programmers — but b...
International SEO: Why Translating Keywords Doesn't Work
International SEO: Why Translating Keywords Doesn't Work. There's a mistake we see repeated in almost every international expansion project we audit: a company ...
JavaScript SEO: diagnosis and fixes for React, Next.js, Vue and Nuxt
JavaScript doesn't hurt your SEO by itself. Google runs it, even for titles and canonicals. The trouble starts when important content exists only after renderin...
Schema.org: The Complete Guide to Structured Data for SEO
Structured data is the language Google and AIs speak. Schema.org isn't new – it's been around since 2011. By 2026, its importance has multiplied. It's no longer...
E-E-A-T: how to show it on your site and what's known about its effect
E-E-A-T stands for experience, expertise, authoritativeness and trust, the criteria Google uses to describe reliable content. The full definition is in what is ...
Zero-click searches: How to gain visibility when no one clicks
Almost 6 in 10 Google searches end without a single click. According to SparkToro's study with Datos panel data, published on 2 July 2024, 58.5% of Google searc...
AI-Generated Content vs. Human Content
Google doesn't penalise AI content. But it does penalise bad content. One of the most frequent questions we receive at ZDS is: “Does Google penalise content gen...
How to make ChatGPT recommend your brand
According to OpenAI, ChatGPT had 700 million weekly active users in September 2025. When one of them asks "what's the best SEO agency in Barcelona?" or "which t...
Google Core Updates in 2026
From Panda and Penguin to the AI Era If you've been in SEO for over a decade, you'll clearly remember (and perhaps with some pain) the names that defined an era...
What is GEO (Generative Engine Optimization) and why your brand needs it
What is GEO (Generative Engine Optimization) and why your brand needs it. Imagine a potential customer asking ChatGPT: "What's the best digital marketing agency...
6 Keys to Converting Visitors into Subscribers
While increasing web traffic volume is an undeniable aspect of any online marketing strategy, it is no less important to focus on another fundamental factor: nu...
Segmentation in Digital Marketing
For online marketing or a conventional marketing strategy, the first question is: who do we want to sell our products and services to? To answer this, it's esse...
Google and the User Experience
January proved to be a turbulent month for webmasters worldwide, with unprecedented shifts in search result rankings. Many experts initially attributed this to ...
7 Tricks to Improve Your Website's Indexing
7 Tricks to Improve Indexing There's no turning back: if you've made it this far, you understand the importance of website positioning for any digital strategy....
The Importance of a Robust Backlink Strategy
External links are crucial for improving and strengthening our website's visibility and, consequently, its positioning in Google's search results. They can have...
Structured Data and Rich Snippets: Updated Guide
Google's algorithm does not consider structured data for PageRank. At least, that's what the internet giant has officially maintained to the public for some tim...
The Most Common SEO Mistakes (and How to Avoid Them in 2026)
Search engine optimisation (SEO) can deliver a better return on investment (ROI) than other marketing activities, such as pay-per-click (PPC) advertising, email...
Google Analytics Alternatives: Web Analytics Tools Compared
Google Analytics 4 is free, and for many sites it's enough. There are three reasons to look at alternatives: privacy, the weight of the script, and that you may...
Tools for Working From Home as if You Were in the Office
The COVID-19 coronavirus outbreak and the call to stay at home whenever possible have prompted many companies to consider the need to incorporate remote work in...
10 Online Marketing Trends for 2019
In addition to encouraging good resolutions, the start of a new year is an ideal time to take stock and try to anticipate the changes and innovations that the c...
Tips for Better Content Distribution
To achieve online visibility, it's not enough to create relevant, high-quality content or to strictly follow the guidelines of major search engines. In addition...
Digital Marketing Trends for 2018
Few economic sectors are subject to as many changes as digital marketing. This is not only due to the incessant innovations in software tools or social media pl...
Google Confirms Algorithm Ranking Updates
Google has acknowledged what some digital marketing experts have been observing in recent weeks: algorithm updates are altering the ranking of links on the sear...
Twitter begins testing 280-character tweets
Since its inception, the maximum length of messages on Twitter has been a source of complaints from users, who felt it excessively limited communication. Howeve...
The web design errors that most harm SEO
Just like a writer or filmmaker who aims to captivate both their audience and critics, a web designer also has two open fronts: on one side, users, and on the o...
Half of Google's First Page Results are Now HTTPS
Internet transfer security has become a primary concern for many organisations, explaining the rise of the Secure Sockets Layer (SSL) protocol. This is indicate...
Google launches a tool to filter offensive comments
While fostering user interaction on social media is a priority for companies within their digital marketing strategy, this practice can have a well-known boomer...
The most searched keywords of 2016? What Google's list really measures
Until very recently, it was said that what mattered wasn't knowing, but having the phone number of someone who did. Well, today, that providential friend is non...
10 Christmas Gifts for Marketers and Geeks
With the Christmas holidays just around the corner, marketers' concerns are not limited to ensuring an e-commerce platform is functioning correctly or that a di...
Google's Rich Cards Now Available for Restaurants and Online Courses
Last May, Google introduced its rich cards, a more advanced version of its rich snippets, designed to improve the user experience (UX) when viewing search resul...
Content Creation Trends for 2017
With just over a month left of the year, it's time to start thinking about what the next 365 days hold for content creation, undoubtedly one of the pillars of a...
6 Tricks to Make Your Emails Irresistible
The weeks leading up to Christmas are a true test for marketing agencies and departments. Not only due to the sheer volume of campaigns to launch and manage in ...
How to increase e-commerce sales: measure first, then act
An online shop's revenue comes down to three numbers: visitors times conversion rate times average order value. To increase it, measure which of the three is we...
SEO is the top priority for businesses in inbound marketing
With the rise and consolidation of social media over the past 10 years, many predicted the beginning of the end for SEO. In fact, many experts believed this new...
6 Tips for Crafting the Perfect Meta Description
When optimising a webpage for on-page SEO, the meta description is often overlooked. However, we should all pay much more attention to this: while it doesn't di...
Google Extends Deadline for Old AdWords Format
As we announced a few weeks ago, Google AdWords' new Expanded Text Ads are here. Specifically, since July, businesses have had access to this new format, which ...
Google to Allow Searching Content within Android Apps
True to its policy of continuously introducing features that enhance user experience, Google joins the post-holiday 'back-to-work' rush with a mobile-focused in...
A new system to add or edit information in Google Maps is born
In a scenario where the app market continues to soar, Google Maps can boast of being the second application to have reached 1 billion downloads, after another G...
10 Free Travel Apps (You Probably Didn't Know About)
According to The App Date a few months ago, Spain now has 27.7 million mobile app users. If we add to this the fact that over 151 million trips are made in this...
10 Reasons Why Physical Stores Must Sell Online
Not every Spanish business offers the option to buy its products online. Both retailers' reluctance and consumers' reservations play a part....
Has Snapchat Overtaken Twitter in Popularity?
If there's one area where the rules of the game change at a frantic pace, it's undoubtedly social media. This dynamic is driven by over 2.2 billion users who re...
Google Announces Major Changes to AdWords Format
There's no respite; although Google's policy of continuous improvements and modifications is part of every marketer's daily life, it's rare for so many new feat...
How to make an infographic: steps, tools and AI
Making an infographic comes down to seven steps: decide what you want to say, gather data with sources, choose the form, set the reading order, build it, check ...
6 Indicators You Must Consider in Your Web Analytics
Let's face it: when measuring website performance, traffic volume – and its month-on-month evolution – often takes centre stage, to the point of obscuring the b...
7 Common Mistakes in Online Content Creation
Are you tired of being reminded that content is king? While this maxim can be tedious, it's true. A blog gives a website more pages that search engines can inde...
Google Is Not a Search Engine, According to the EU
That SEO criteria are subject to continuous – and sometimes perplexing – changes is something every marketer expects. Nevertheless, news like the new European U...
Only 1 in 3 Spanish Companies Prioritise SEO
Few things in digital marketing generate as much consensus as the importance of a website appearing at the top of Google search results, achieved through a robu...
How to Create an Effective Content Marketing Strategy
You've surely heard the phrase "content is king" ad nauseam. This statement hasn't lost its relevance since the crisis began; in fact, it's more pertinent than ...
Free keyword research tools: what they really show without an account
Most lists of free keyword research tools tell you what each tool claims to do. We wanted to see what happens when you type the same query into all of them, pay...
The 10 Keys to Effective Mobile Marketing
Did you know that since autumn 2014, there have been more mobile connections than people in the world? Specifically, the GSMA's counter passed 7.2 billion at th...
Email marketing spend to see the highest growth this year
Who said email was on its way out? If we look at marketing agencies' budgets for 2016, this prediction couldn't have been more wrong. Far from stagnating or dec...
Google Tests Including More Ads in Search Results
Meeting user needs and expectations to the fullest. While this has always been Google's core premise – and the principle behind continuous changes to its algori...
Facebook and Twitter Join the Video Marketing Trend
Videos have become an integral part of everyday online use. Internet users consume numerous videos daily, primarily through Google's YouTube platform. They sear...
Google Takes the Pulse of the Tourism Industry
Rumours have been circulating since the beginning of the month that Google is making moves to establish itself as a hotel booking platform. And as often happens...
Don't leave your Adwords URL updates until the last minute
One of the new features recently introduced by Google Adwords to facilitate the tracking and measurement of online advertising campaign success relates to URLs....
Google Also Penalises in Spain (Expedia Case Study)
The Expedia.com Case in the US: 19.01.2014 As outsiders, we simply don't know the exact cause of Expedia's current situation, or if the domain will recover soon...
Google Panda 4.0 (2026: The Evolution Towards Helpful Content and E-E-A-T)
Panda no longer exists, but its spirit lives on! Today, your content quality is assessed by Google's core ranking systems, which have included the former Helpfu...