Figure 1. Trust signal radar for z-lib.by. Larger shaded area indicates stronger trust signals.
How we scored z-lib.by
On-page mentions:
Books
Tech signals:
Web Application, Cloudflare Browser Insights
Positive signals:
an active SSL certificate (3 months)
multi-language support
a domain age of 17 months
presence in public traffic rankings
Negative signals:
a low third-party reputation score
Last checked October 19, 2026 at 7:05 AM by
Gridinsoft Trust Model v2.5.8
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What is Z-lib?
According to its current page title, z-lib.by presents itself as “Z-Library – the world’s largest e-book library. Your gateway to knowledge and culture.”. The sections below evaluate the site-specific reputation and technical findings.
This domain was registered June 5, 2025 at 9:00 PM through the company Open Contact, Ltd
and ownership information is not publicly available.
Complaint contact not found.
Is z-lib.by safe?
Use caution with z-lib.by. Its current Gridinsoft trust score is 35/100; review the site-specific findings below before use.
Why is z-lib.by marked "Suspicious Website"?
Gridinsoft's current assessment of z-lib.by is based on generic page wording. The listed status means the domain currently appears in Gridinsoft's own Threat List; it is not a consensus of external providers. None of the 25 publicly displayed security sources report a warning.
A structured view of the site's detected themes, page signals, and related online footprint elements.
Deals
Books
Bootstrap Framework
This site uses Bootstrap, a widely-adopted open-source framework for responsive web development. Bootstrap enables efficient creation of mobile-friendly interfaces through standardized components and styling.
Multilanguage
The website provides multi-language support, demonstrating international accessibility and commitment to diverse user populations. Multi-language implementation typically indicates professional development standards and global operational scope, representing a positive trust indicator.
Web Application
z-lib.by is configured as an installable web application (PWA-style behavior) with app-like interaction patterns.
Cloudflare Browser Insights
This website is proxied through Cloudflare's CDN/network and has Cloudflare Browser Insights enabled.
AI-generated Text
This site contains text patterns consistent with machine-generated or AI-assisted content production.
Listed by Gridinsoft
Gridinsoft Internet Security classified z-lib.by as unsafe. As a VirusTotal partner, our detections contribute to broader protection across tools and browsers.
Domain Information
CreatedJune 5, 2025 at 9:00 PMUpdated: July 23, 2026 at 9:00 PM
SSL CertificateWE1TLSv1.3 · Valid for: 3 months · from October 8, 2026 at 7:18 AM · to January 6, 2027 at 8:17 AM
Name Serversbyron.ns.cloudflare.com kelly.ns.cloudflare.com
Content from the analyzed website
Quoted for security analysis. These statements belong to the source website and are not endorsed by Gridinsoft.
Original page titleZ-Library – the world’s largest e-book library. Your gateway to knowledge and culture.
Original descriptionZ-Library is an online library dedicated to enhancing global education through easy access to books. Recognizing books as a valuable source of knowledge throughout history, we aim to provide free literature access to ...
Available languages
Mentioned hosts (42)
ja.z-lib.byru.z-lib.byid.z-lib.byth.z-lib.bylibrary-access.skfr.z-lib.byvi.z-lib.byx.comit.z-lib.byz-library.imms.z-lib.byz-lib.byz-library.skpl.z-lib.byar.z-lib.by
and 27 more
Security Analysis
Detection SignaturesThese signatures are used to generate the security fingerprint below.
DealsBooksBootstrap FrameworkWeb Application
Security FingerprintUnique identifier based on site analysis
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Help protect others by sharing this page on social media! The more people who know about z-lib.by, the fewer chances they have to deceive someone else.Help others evaluate z-lib.by by sharing this page on social media!
Help protect others by sharing this page on social media! The more people who know about z-lib.by, the fewer chances they have to deceive someone else. Help others evaluate z-lib.by by sharing this page on social media!