hackmd.io - HackMD - Collaborative Markdown Knowledge Base

Quick Summary

Online Status

Online

Server IP address resolved: Yes
Http response code: 200
Response time: 1.58 sec.
Last Checked: 12/01/2023

Over the time hackmd.io has been ranked as high as 3,767 in the world, while most of its traffic comes from Taiwan, where it reached as high as 454 position.

Hackmd.io receives about 12,029 unique visitors and 26,464 pageviews per day. The estimated value of hackmd.io is 464,280 USD. Each unique visitor makes about 2.2 pageviews on average.

Hackmd.io is registered under .IO top-level domain. Check other websites in .IO zone.

At the time of the last check (November 27, 2019) hackmd.io has an expired SSL certificate issued by Amazon (expired on February 11, 2020). Check other websites using SSL certificates issued by Amazon.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust hackmd.io is quite a safe domain.

Mobile-Friendly test indicates that hackmd.io is well optimized for mobile and tablet devices.

Hackmd.io General Information

Global Rank

25,773

Average Load Time

1.60sec

Links In Count

Website Value

$464,280

Audience Geography. Where are hackmd.io visitors located?

Country	Rank
Taiwan TW	454
Costa Rica CR	1271
Viet Nam VN	31164
Canada CA	38846
India IN	43095
United States US	91537

Country	Percent of Pageviews
Taiwan TW	76.1%
India IN	6.7%
Costa Rica CR	3.4%
United States US	2.9%
Canada CA	1.1%
Viet Nam VN	0.4%
Other	9.3%

Country	Percent of Visitors
Taiwan TW	72.9%
India IN	5.2%
United States US	4.6%
Costa Rica CR	2.2%
Canada CA	1.1%
Viet Nam VN	0.7%
Other	13.3%

Where do visitors go on hackmd.io?

Subdomain	Pageviews
hackmd.io	93.66%
g0v.hackmd.io	6.34%

Subdomain	Pageviews per User
hackmd.io	2.1
g0v.hackmd.io	1.6

Subdomain	Reach
hackmd.io	92.48%
g0v.hackmd.io	8.1%

How popular is hackmd.io?

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	24034	3279	28	-20.51%
30	21659	-3734	32	20%
7	23022	-2117	30	10%
1	20828	6140	36	-26.84%

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	37811	5187	17	-17.76%	2.2	3%
30	37957	-1580	18	8%	2	-10.48%
7	37457	-8989	19	30%	2.3	20%
1	31572	3722	25	-9.014%	3	20%

Period	Global Rank	Global Rank Delta
past 3 months	25773	3480
past month	23972	-3489
past week	25006	-4261
yesterday	20573	4753

Hackmd.io Alexa Rank History

Alexa Rank shows how popular hackmd.io is in comparison with other sites. The most popular site has Alexa Rank equals 1. If hackmd.io has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to hackmd.io and pageviews on hackmd.io over the past 3 months.

Hackmd.io Safety Information

Overview

Last Updated: 04/18/2024

Overall result - "hackmd.io" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/24/2024

hackmd.io is safe.

Norton ConnectSafe evaluates hackmd.io for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 10/26/2016

hackmd.io is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

Malware not found at "hackmd.io".
"hackmd.io" is not a phishing page.
"hackmd.io" does not install unwanted software.
"hackmd.io" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/23/2021

hackmd.io is safe.

McAfee assesses hackmd.io for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze hackmd.io for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/12/2019

hackmd.io child safety isvery good.

The WOT calculates reputation of the hackmd.io. This reputation system receives ratings from users and information from third-party sources, assesses the hackmd.io for safety features and confirms, whether hackmd.io is suitable for children.

SSL Information

SSL Checker Tool

Domain	hackmd.io
Issuer Organization	Amazon
Issuer	Amazon
Algorithm	RSA-SHA256
Valid form	01/11/2019
Expiration	02/11/2020
Signed	Certificate is not self signed
Additional Domains	hackmd.io *.hackmd.io

Hackmd.io Server Information

Server Location

Geolocation Tool

Seattle

Washington

United States

ASN Information

ASN Lookup Tool

ASN ID: 16509
ASN Title: AMAZON-02 - Amazon.com, Inc., US

Last Update: 02/25/2024

ASN Whois

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 16509
ASName: AMAZON-02
ASHandle: AS16509
RegDate: 2000-05-03
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/16509

OrgName: Amazon.com, Inc.
OrgId: AMAZON-4
Address: 1918 8th Ave
City: SEATTLE
StateProv: WA
PostalCode: 98101-1244
Country: US
RegDate: 1995-01-23
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/AMAZON-4

OrgAbuseHandle: AEA8-ARIN
OrgAbuseName: Amazon EC2 Abuse
OrgAbusePhone: +1-206-266-4064
OrgAbuseEmail: abuse@amazonaws.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/AEA8-ARIN

OrgTechHandle: ANO24-ARIN
OrgTechName: Amazon EC2 Network Operations
OrgTechPhone: +1-206-266-4064
OrgTechEmail: amzn-noc-contact@amazon.com
OrgTechRef: https://rdap.arin.net/registry/entity/ANO24-ARIN

RTechHandle: AC6-ORG-ARIN
RTechName: Amazon-com Incorporated
RTechPhone: +1-206-266-2187
RTechEmail: ipmanagement@amazon.com
RTechRef: https://rdap.arin.net/registry/entity/AC6-ORG-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Hackmd.io Domain Name Information

WHOIS

WHOIS Lookup Tool

Domain Whois

Domain Name: hackmd.io
Registry Domain ID: 676692ee28ab4a2f94fb8a8e34e20c01-DONUTS
Registrar WHOIS Server: whois.gandi.net
Registrar URL: https://www.gandi.net
Updated Date: 2021-11-23T15:08:59Z
Creation Date: 2015-04-20T08:57:00Z
Registry Expiry Date: 2022-04-20T08:57:00Z
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: REDACTED FOR PRIVACY
Registrant Name: REDACTED FOR PRIVACY
Registrant Organization: HackMD
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province:
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: TW
Registrant Phone: REDACTED FOR PRIVACY
Registrant Phone Ext: REDACTED FOR PRIVACY
Registrant Fax: REDACTED FOR PRIVACY
Registrant Fax Ext: REDACTED FOR PRIVACY
Registrant Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Admin ID: REDACTED FOR PRIVACY
Admin Name: REDACTED FOR PRIVACY
Admin Organization: REDACTED FOR PRIVACY
Admin Street: REDACTED FOR PRIVACY
Admin City: REDACTED FOR PRIVACY
Admin State/Province: REDACTED FOR PRIVACY
Admin Postal Code: REDACTED FOR PRIVACY
Admin Country: REDACTED FOR PRIVACY
Admin Phone: REDACTED FOR PRIVACY
Admin Phone Ext: REDACTED FOR PRIVACY
Admin Fax: REDACTED FOR PRIVACY
Admin Fax Ext: REDACTED FOR PRIVACY
Admin Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Registry Tech ID: REDACTED FOR PRIVACY
Tech Name: REDACTED FOR PRIVACY
Tech Organization: REDACTED FOR PRIVACY
Tech Street: REDACTED FOR PRIVACY
Tech City: REDACTED FOR PRIVACY
Tech State/Province: REDACTED FOR PRIVACY
Tech Postal Code: REDACTED FOR PRIVACY
Tech Country: REDACTED FOR PRIVACY
Tech Phone: REDACTED FOR PRIVACY
Tech Phone Ext: REDACTED FOR PRIVACY
Tech Fax: REDACTED FOR PRIVACY
Tech Fax Ext: REDACTED FOR PRIVACY
Tech Email: Please query the RDDS service of the Registrar of Record identified in this output for information on how to contact the Registrant, Admin, or Tech contact of the queried domain name.
Name Server: ns-1925.awsdns-48.co.uk
Name Server: ns-221.awsdns-27.com
Name Server: ns-845.awsdns-41.net
Name Server: ns-1444.awsdns-52.org
DNSSEC: signedDelegation
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2022-02-18T08:19:02Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
hackmd.io	75.2.77.152	300
hackmd.io	99.83.179.177	300

Host	MX Record	Priority	TTL
hackmd.io	aspmx.l.google.com	1	60
hackmd.io	alt3.aspmx.l.google.com	10	60
hackmd.io	alt4.aspmx.l.google.com	10	60
hackmd.io	alt1.aspmx.l.google.com	5	60
hackmd.io	alt2.aspmx.l.google.com	5	60

Host	NS Record	TTL
hackmd.io	ns-1444.awsdns-52.org	172800
hackmd.io	ns-1925.awsdns-48.co.uk	172800
hackmd.io	ns-221.awsdns-27.com	172800
hackmd.io	ns-845.awsdns-41.net	172800

Host	TXT Record	TTL
hackmd.io	1password-site-verification=57QCQRGM55BBXPSVY7HZ2PLKJ4	300
hackmd.io	MS=ms17207355	300
hackmd.io	apple-domain-verification=HnlQ3AxJK6XOBK37	300
hackmd.io	google-site-verification=4C6HQbZYXANAOkpGxSjVMQ5Y2rnkxnDKI5foWeuv5tU	300
hackmd.io	google-site-verification=Yr_Bo_yeVoZeSEPkuJe4pugd0xb7gNecEcm0VauL3Xc	300
hackmd.io	google-site-verification=d-uL-RwYIwGp2juReXK632sSBTtVCCKWghWmt2fC05s	300
hackmd.io	v=spf1 include:amazonses.com include:zoho.com include:servers.mcsv.net include:mail.zendesk.com include:mailgun.org include:_spf.google.com ~all	300

ns-221.awsdns-27.com
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400

Hackmd.io HTML Validation

HTML Validation Tool

Warnings

Consider avoiding viewport values that prevent users from resizing documents.

Empty heading.

Errors

Attribute “href” not allowed on element “p” at this point.

Attribute “target” not allowed on element “p” at this point.

Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)

Bad value “button” for attribute “type” on element “a”: Subtype missing.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)

Element “form” not allowed as child of element “h5” in this context. (Suppressing further errors from this subtree.)

Element “div” not allowed as child of element “h6” in this context. (Suppressing further errors from this subtree.)

Hackmd.io Desktop Insights

Desktop Page Insights Tool

Last tested: 01/03/2016

Desktop

Desktop Speed

64%

Enable compression

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Minify JavaScript

Minify CSS

Desktop Resource Breakdown

Total Resources	53
Number of Hosts	19
Static Resources	23
JavaScript Resources	30
CSS Resources	8

Hackmd.io Mobile Insights

Mobile Page Insights Tool

Last tested: 11/05/2019

Mobile

Mobile Usability

96%

Size content to viewport

Size tap targets appropriately

Mobile Speed

66%

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Minify CSS

Enable compression

Minify HTML

Optimize images

Mobile Resource Breakdown

Total Resources	52
Number of Hosts	8
Static Resources	45
JavaScript Resources	13
CSS Resources	4

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Hackmd.io HackMD - Collaborative Markdown Knowledge Base

Best way to write and share your knowledge in markdown.

Quick Summary

Hackmd.io General Information

Hackmd.io Alexa Rank History

Hackmd.io Safety Information

Hackmd.io Server Information

Hackmd.io Domain Name Information

Hackmd.io HTML Validation

Hackmd.io Desktop Insights

Hackmd.io Mobile Insights

Hackmd.io Nearest Competitors

Hackmd.io Typos