Articles by Vitalii Holben
E-commerce price monitoring with screenshots: what we actually found
We set up screenshot-based price monitoring on Amazon across several product categories. Instead of clean price data, we got error pages, layout shifts, and a visual diff that catches things text scrapers miss entirely. Here's the full breakdown with real data.
How to bypass age verification on websites using custom cookies
Some websites block content behind an age verification form — three input fields for date of birth, no simple button to click. Click selector can't help here. We show how to bypass these gates using custom cookies, with jackdaniels.com as a real example.
When layout shifts break your price monitoring: a real Amazon tracking story
We set up price monitoring on an Amazon product page and immediately started getting 22% diff alerts — not because the price changed, but because a promotional banner kept appearing and disappearing in the navigation, shifting the entire layout down by a few dozen pixels. Here's how we figured out what was happening and what we'd recommend doing about it.
7% of Amazon Pages Returned Errors With HTTP 200. Here's the Proof.
We added a handful of Amazon pages to track product prices. Instead of price changes, we started getting alerts about error pages. Turns out scheduled screenshots double as availability monitoring, and they catch things Pingdom never will.
We Ran Hetzner Through the Wayback Machine and Our Own Tool
We tested both tools on the same site for a week. The capture frequency, cookie handling, and comparison features told us more than any feature table could.
How to Hide Cookie Banners, Popups and Age Gates From Automated Screenshots
We tested click selector on three real sites — Hetzner (cookie banner), Fine Wine & Good Spirits and CWSpirits (age verification). One CSS selector in the settings, and every screenshot comes back clean.
False Positives in Screenshot Monitoring: What Causes Them and What to Do
We got 14 alerts in one day from a single website. The problem was a live counter and a logo carousel triggering visual diff on every capture. Here is how we fixed it with threshold tuning and hide selectors.
The Deploy That Broke Our Hero Section for 63 Hours
We pushed a one-line CSS fix on a Friday, closed our laptops, and didn't realize the hero section was broken until Monday. Every automated test had passed.
What Courts Accept as Website Evidence (And What They Don't)
Screenshots are admissible in court, but not all screenshots are equal. This guide explains what makes a website screenshot legally valid and how to set up automated evidence collection that holds up under scrutiny.
How to Track Terms of Service & Privacy Policy Changes
Terms of service and privacy policy pages change without warning. Here is how to set up automated screenshot monitoring so you always know what changed and when.
We Caught a 32% SaaS Price Drop Live
On April 27th, proxy-cheap dropped their Static Residential Proxy price from $3.39 to $2.29 with zero announcement. We caught it the same morning.
Text Monitoring vs Visual Diff: What Each One Actually Catches
Text monitoring and visual diff solve different problems. One reads the code, the other compares what visitors actually see. Here's how to pick the right one.