Is mermaid.live safe?

http://mermaid.live/

SafeStatus

Coveragestrong2 of 4 applicable core capabilities

Verdict

Mermaid Live Editor is a legitimate open-source diagramming tool.

The site at mermaid.live is the official live editor for the Mermaid.js diagramming library. It is hosted on GitHub Pages, carries no malware warnings, and offers a free trial for optional paid features.

The site is safe to use for creating diagrams. Visitors who want the paid AI features can start the free trial directly from the official page.

Read full analysis

Loading saved screenshot

Preparing the saved page preview.

Saved site captureCaptured safely during this scan No antivirus detections across 90 engines

Calibrated safety spectrum

Where this site sits

Dangerous1–20
High Risk21–44
Moderate Risk45–69
Low Risk70–84
Safe85–100

The score combines saved evidence strength and analysis quality. Coverage is reported separately.

01 · Investigation Brief

Investigation Brief

Technical and project evidence

the browser threat feed returned no threat warning for the domain.

The connection uses valid TLS encryption.

The project is documented on the official mermaid.js site and maintained in the public mermaid-js/mermaid-live-editor GitHub repository.

Commercial CTA and visitor experience

The page displays a 'Try the full Mermaid experience' prompt that links to a paid tier offering AI diagram generation, drag-and-drop editing, and unlimited storage.

No evidence of hidden subscription traps, forced redirects, or deceptive checkout flows was observed.

Why the score is 92

The saved analysis does not include enough completed checks for a Safe rating. Coverage remains separate so missing sources cannot be mistaken for clean results.

02 · Security Evidence

Security evidence

Collected signals and independent provider data for this URL.

Antivirus Engines

0/ 90

No detections

Saved result - stale

No detections across 90 engines

No antivirus engine in this saved scan raised an adverse result. This is one signal, not a guarantee.

Malicious: 0
Suspicious: 0
Total: 90

All 90 engine results

0xSI_f33d - unrated - Clean
Abusix - clean - Clean
Acronis - clean - Clean
ADMINUSLabs - clean - Clean
AILabs (MONITORAPP) - clean - Clean
AlienVault - clean - Clean
alphaMountain.ai - clean - Clean
AlphaSOC - unrated - Clean
Antiy-AVL - clean - Clean
ArcSight Threat Intelligence - unrated - Clean
AutoShun - unrated - Clean
Bfore.Ai PreCrime - unrated - Clean
BitDefender - clean - Clean
Bkav - unrated - Clean
BlockList - clean - Clean
Blueliv - clean - Clean
Certego - clean - Clean
ChainPatrol - unrated - Clean
Chong Lua Dao - clean - Clean
CINS Army - clean - Clean
CRDF - clean - Clean
Criminal IP - unrated - Clean
CSIS Security Group - unrated - Clean
CTX AI - clean - Clean
Cyan - unrated - Clean
Cyble - clean - Clean
CyRadar - clean - Clean
desenmascara.me - clean - Clean
DNS8 - unrated - Clean
Dr.Web - clean - Clean
EmergingThreats - clean - Clean
Emsisoft - clean - Clean
Ermes - unrated - Clean
ESET - clean - Clean
ESTsecurity - clean - Clean
Forcepoint ThreatSeeker - clean - Clean
Fortinet - clean - Clean
Fortra - unrated - Clean
G-Data - clean - Clean
GCP Abuse Intelligence - unrated - Clean
Google Safe Browsing - clean - Clean
GreenSnow - clean - Clean
GreyNoise - unrated - Clean
Gridinsoft - unrated - Clean
Guardpot - unrated - Clean
Heimdal Security - clean - Clean
Hunt.io Intelligence - unrated - Clean
IPsum - clean - Clean
Juniper Networks - clean - Clean
K7AntiVirus - unrated - Clean
Kaspersky - clean - Clean
LevelBlue - clean - Clean
Lionic - clean - Clean
Lumu - unrated - Clean
Malwared - clean - Clean
MalwarePatrol - clean - Clean
MalwareURL - unrated - Clean
Mimecast - unrated - Clean
Netcraft - unrated - Clean
OpenPhish - clean - Clean
PhishFort - unrated - Clean
Phishtank - clean - Clean
PREBYTES - clean - Clean
PrecisionSec - unrated - Clean
Quick Heal - clean - Clean
Quttera - clean - Clean
Rising - clean - Clean
SafeToOpen - unrated - Clean
Sangfor - clean - Clean
Sansec eComscan - unrated - Clean
Scantitan - clean - Clean
SCUMWARE.org - clean - Clean
Seclookup - clean - Clean
Snort IP sample list - unrated - Clean
SOCRadar - unrated - Clean
Sophos - clean - Clean
StopForumSpam - clean - Clean
Sucuri SiteCheck - clean - Clean
ThreatHive - clean - Clean
URLhaus - clean - Clean
URLQuery - unrated - Clean
Viettel Threat Intelligence - clean - Clean
VIPRE - unrated - Clean
ViriBack - clean - Clean
VX Vault - clean - Clean
Webroot - clean - Clean
Xcitium Verdict Cloud - unrated - Clean
Yandex Safebrowsing - clean - Clean
ZeroCERT - clean - Clean
ZeroFox - unrated - Clean

Security Scans

Browser Threat Feed

Not flagged on major threat lists

Checked against the browser threat feeds available to this scan — no hit.

What we observed

Loading saved screenshot

Preparing the saved page preview.

CAPTURED PAGE

mermaid.live

Visual analysis

Visual context from the captured page

Try the full Mermaid experience

Context only

What the captured page showed

1 observation

01
Try the full Mermaid experience

03 · Investigation Story

Investigation story

The behavior, reputation, and operator evidence that explains how this site may affect a visitor.

What the site claims
Online FlowChart & Diagrams Editor - Mermaid Live Editor
What we observed
The page content was captured and checked alongside 90 antivirus results.
What independent research found
2 external findings were saved and compared with the page evidence.
What remains unverified
2 of the 4 applicable core capabilities did not complete, so those gaps remain visible in the coverage ledger.

What kind of site and risk is this?

Threat category

No threat category confirmed

Service and business model

Saas

Subscription

Observed behavior

No disruptive browser behavior saved

Evidence behind this classification

01the browser threat feed returned no threat warning
02Valid TLS encryption confirmed
03Mermaid.js now lives at mermaid.ai Mermaid | Diagramming and charting tool https://mermaid.js.org/

Risk pattern correlation

Evidence correlation

Captured signals match known risk patterns

Moderate correlation

This view separates independent infrastructure evidence from pattern labels derived from the same captured page. Pattern matches add context, but they do not prove that the site belongs to a cross-domain scam network.

Correlation score

20/100

ClearLowModerateHighCritical

Evidence (2)

IP 185.199.108.153 has 187 abuse reports — likely part of a network.
Short name on low-trust .live TLD — over-represented on scam farms.

Correlated evidence (1)

Pattern · LOW Trust TLD

Web research findings

Independent findings for mermaid.live, including public complaints, named review sources, registration records, and look-alike-domain evidence. A missing result is shown as unverified, never converted into a clean bill of health.

Business registration

No public record found

Could not match the site to a registered company — common for small sites.

Clone check

No clone detected

The completed research found no supported clone indicator.

Typosquat check

No look-alike match

The completed research found no supported look-alike match.

Web mentions

2 positive

Positive reviews (2)

Public quotes that support the operator's credibility.

Mermaid | Diagramming and charting toolopen
"Mermaid.js now lives at mermaid.ai"
mermaid-js/mermaid-live-editor: Edit, preview and share ... - GitHubopen
"Edit, preview and share mermaid charts/diagrams. New implementation of the live editor."

Reputation Sources

How this domain rates across independent threat-intelligence and blocklist providers.

Google Safe Browsing

Not listedCheck ↗

VirusTotal

Not listedCheck ↗

AbuseIPDB

ListedCheck ↗

Also verify:Spamhaus ↗DNSBL / SURBL ↗PhishTank ↗

04 · Domain & Infrastructure

Domain & infrastructure

Timeline · identity · encryption · redirects · hosting

The plumbing behind the site — who registered it, how it’s encrypted, where it’s hosted, and where it links out. A valid certificate or a calm server doesn’t mean the business is honest — scam sites pass these checks too. Use this to corroborate the verdict, not to overturn it.

Infrastructure map

How the saved page connected to the wider web.

Domainmermaid.live
Redirects tomermaid.live
Hosted byGitHub, Inc.

Domain Timeline

Aug 15, 2021
Domain registered
First appeared in WHOIS records — 5.1 years old today.
Sep 8, 2026
Saved security review — Reviewed as safe
This saved scan found no active threat signals in the checks it completed.

mermaid.live has operated for years with no threat signals in this review — a long, stable track record, though it is never a guarantee on its own.

Contact Verification

Saved contact details can help identify the operator. Their presence supports traceability; it does not prove the business is trustworthy.

What We Found

No clear contact details on the page

Emails on site's domainNone

Phone numbersNone

Postal addressNot listed

Linked social profiles0

Signal Summary

Several contact red flags

No direct contact email found on the captured page.

Domain & Encryption

Domain History

Age5 years old

RegistrarPorkbun LLC

RegisteredAug 15, 2021

ExpiresAug 15, 2027

Owner privacyUnknown

Encryption Certificate

StatusValid

ProtocolTLSv1.3

IssuerLet's Encrypt · YR1

ExpiresOct 8, 2026 (30d)

Self-signedNo

Hosting & Technology

HostingGitHub, Inc.

Server locationUS

Web serverGitHub.com

Redirect Chain

Hops

Cross-domain

Lookalike

Punycode

1301http://mermaid.live/
2206https://mermaid.live/

Server Reputation

Abuse Intelligence

Confidence score50%

Reports on file187

ISPGitHub, Inc.

Usage typeContent Delivery Network

05 · Evidence Ledger

Evidence ledger

Coverage, provenance, and source freshness remain separate so a missing check is never mistaken for a clean result.

Antiviruspartial
Browser threat feedcomplete
Page contentpartial
Analysiscomplete
Visual evidencecomplete

Completed analysis

The conclusion is supported by the evidence saved with this report.

Technical threat

unknown

Malware, phishing, credential theft and hostile infrastructure.

No confirmed evidence in this dimension.

Operator / customer risk

unknown

Complaints, withdrawals, business conduct and commercial traps.

No confirmed evidence in this dimension.

Source coverage and freshness

Status shows whether usable evidence was saved; finding shows what that evidence observed.

Source coverage
Source	Result	Completion	Finding	Freshness
Antivirus	0 of 90 engines flagged	Limited	No saved finding	stale fallback · Sep 8, 2026
Browser protection	No browser threat-list match	Completed	No adverse finding	Not available
Page content	Page fetched · HTTP 200	Limited	No saved finding	Not available
Visual evidence	1 visible observation saved with the page capture	Completed	No adverse finding	Not available
Independent research	2 independent findings were saved	Completed	No adverse finding	Not available

Antivirus: Result0 of 90 engines flagged; CompletionLimited; FindingNo saved finding; Freshnessstale fallback · Sep 8, 2026
Browser protection: ResultNo browser threat-list match; CompletionCompleted; FindingNo adverse finding; FreshnessNot available
Page content: ResultPage fetched · HTTP 200; CompletionLimited; FindingNo saved finding; FreshnessNot available
Visual evidence: Result1 visible observation saved with the page capture; CompletionCompleted; FindingNo adverse finding; FreshnessNot available
Independent research: Result2 independent findings were saved; CompletionCompleted; FindingNo adverse finding; FreshnessNot available

06 · Your Next Move

Your next move

Still, stay alert

No major threat indicators — but a clean scan does not guarantee every page is safe, and phishing emails routinely spoof real domains.

Double-check the exact URL in your address bar
Confirm you are actually on mermaid.live and not a lookalike like m-ermaid.live or an IDN homoglyph.
Use a password manager
Password managers only auto-fill on the exact domain they were saved for — they refuse to fill lookalike domains, which is the single best phishing defence.
Discuss this site on the forum
If you have first-hand experience with this site — good or bad — share it with the MalwareTips community.
Open

07 · Safety FAQ

Safety FAQ

Common questions, answered directly from the scan data above — so the answers reflect the saved verdict and evidence in this report.

Is mermaid.live legit and safe?

Our automated security review found no threat indicators on mermaid.live, so it appears legitimate. All 90 antivirus engines we queried report it clean, and the domain is 5.1 years old, registered on August 15, 2021 — established domains are far less likely to be scams. Even so, always double-check the exact address in your browser, because phishing emails routinely spoof real, trusted domains like this one.

Is mermaid.live safe to use?

mermaid.live has a Safety Score of 92/100 (Safe). The saved analysis does not include enough completed checks for a Safe rating. at scan time. Treat unexpected login or payment requests with normal caution.

Could a legitimate site like mermaid.live still be used in a scam?

Yes — and this is worth understanding. Even trustworthy domains get spoofed in phishing emails (a fake message that only looks like it's from mermaid.live), and legitimate sites are occasionally compromised on specific pages. A clean verdict means the site itself checks out today; it does not mean every email or link claiming to be from mermaid.live is genuine. Always reach the site by typing the address yourself rather than clicking links in unexpected messages.

Has mermaid.live been flagged by antivirus engines?

No — all 90 antivirus and blocklist engines in our malware network currently report mermaid.live as clean. That's a good sign, though antivirus coverage is only one of the many signals we weigh, and brand-new scam sites can appear clean before vendors catch up.

Is mermaid.live on any phishing or malware blacklists?

No — mermaid.live is not currently on the major browser blocklist feeds that Chrome, Safari, Firefox, and Edge rely on. Note that blocklists can lag behind brand-new scam domains, so "not listed" is reassuring but not a guarantee on its own.

How old is the mermaid.live domain?

mermaid.live is 5.1 years old, registered on August 15, 2021 through Porkbun LLC. A multi-year registration history is one of the stronger signals against a scam, though it's never a guarantee on its own — established domains can still be misused.

Does mermaid.live have a valid SSL certificate?

Yes — mermaid.live presents a valid TLSv1.3 certificate issued by Let's Encrypt · YR1, valid for another 30 days. Important caveat: SSL only encrypts the connection between you and the site — it does not verify who runs it. Almost all scam sites now have valid SSL too, so a padlock alone never means "safe".

Where is mermaid.live hosted?

mermaid.live resolves to an IP operated by GitHub, Inc. in US (Content Delivery Network). Hosting location alone doesn't make a site good or bad — but hosting that doesn't match a brand's claimed country, or that sits on networks known for abuse, is one of the many signals we weigh alongside the verdict above.

How often is the mermaid.live report updated?

This report is a record of the scan run on September 8, 2026, and the verdict reflects that point in time. Scam sites change fast — they can go live, get flagged, or vanish within days — so if you believe something about mermaid.live has changed, MalwareTips staff can run a fresh scan that re-checks every signal from scratch and republishes an updated verdict.

08 · Final Verdict

Final verdict

The saved conclusion, decisive evidence, and practical action in one final view.

Verdict score

92/100

Safe

Mermaid Live Editor is a legitimate open-source diagramming tool.

Captured during this scan. Opening this report does not revisit the site.

Conclusion

Recommended actionThe site is safe to use for creating diagrams. Visitors who want the paid AI features can start the free trial directly from the official page.

Continue toCommunity

09 · Community

Community

First-hand experiences add human context after the scanner has reached its conclusion.

Is mermaid.live safe?

Mermaid Live Editor is a legitimate open-source diagramming tool.

Technical and project evidence

Commercial CTA and visitor experience

Why the score is 92

What the captured page showed

What the site claims

What we observed

What independent research found

What remains unverified

Captured signals match known risk patterns

Technical threat

Operator / customer risk

Still, stay alert

Double-check the exact URL in your address bar

Use a password manager

Discuss this site on the forum

Mermaid Live Editor is a legitimate open-source diagramming tool.

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