Is cdnjs Down? Check current status

Check if cdnjs is down, official outages, user-reported issues, and outages map.

Current cdnjs status

cdnjs is working normally

Updated from cdnjs official status page

cdnjs not working for you?

cdnjs service health. Issues reported in the last 24 hours

Check the number of user-reported issues over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem. We only consider an issue widespread if there are multiple reports within a short timeframe.

Working Normally
Possible Incident
Confirmed Outage
cdnjs Outage Map

View cdnjs Reports Map

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cdnjs recent outages and downtime history

IsDown has tracked 15 incidents since started monitoring cdnjs status in March 2021. We collect data from 4522+ services, and normalize the data to give you a clear picture of the impact of the outage. It will show official cdnjs outages and also issues that we're started by a spike in crowdsource reports.

Date Incident Duration
Jun 12, 2025
08:20 PM CEST
Major
API outage
We're investigating an outage with the cdnjs API. We believe this to be caused by an upstream pro...
about 3 hours
Aug 01, 2023
08:22 PM CEST
Minor
SRI hashes changed on multiple libraries
We are aware of an issue impacting multiple libraries where SRI hashes have changed. We have foun...
3 days
May 20, 2022
01:28 PM CEST
Minor
API returning 502 responses
We are aware that the cdnjs API is returning 502 responses for many requests. We are investigatin...
about 9 hours
May 25, 2021
10:58 AM CEST
Maintenance
Intermittent issues with API responses
We are aware that some requests to the API may receive invalid responses. We are looking into this.
10 months
May 24, 2021
10:42 PM CEST
Maintenance
API returning Error 502 Bad Gateway
We are aware that the cdnjs API is currently returning a 502 Bad Gateway error for requests. We a...
10 months
Apr 21, 2021
06:55 PM CEST
Major
API returning Argo Tunnel error
We are aware that the cdnjs API is currently returning an Argo Tunnel error. We are investigating...
11 months
Aug 12, 2020
12:25 PM CEST
Minor
SSL errors for cdnjs.cloudflare.com
We are aware that requests to cdnjs.cloudflare.com are currently returning a bad SSL response. We...
over 1 year
Jun 12, 2020
10:30 AM CEST
Minor
cdnjs website & API erroring for some libraries
We are aware of reports that some libraries on the cdnjs website and API are resulting in an erro...
almost 2 years
Apr 15, 2020
09:01 PM CEST
Minor
522 & 523 responses for non-cached assets
We are aware of an issue affecting requests for certain assets resulting in a 522 or 523 response...
almost 2 years
Dec 30, 2019
10:59 AM CET
Minor
Library versions missing from website & API
We have been made aware of an issue with the cdnjs website that means certain library pages are n...
about 2 years
Sign up to check more outage history

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  • Track outages in real-time
  • Keep your team or customers informed
  • Create private or public status pages

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User comments about cdnjs status

See what users are saying about cdnjs issues that impacted them and how they are affected by the outage. You can see if other users are experiencing the same issues and if there are any workarounds or solutions.

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Monitoring cdnjs since March 2021

Tracking 4 cdnjs services and regions

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1 incident in 2025

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How to monitor the status of cdnjs and all your dependencies?

IsDown is a status page aggregator that monitors if cdnjs and all your dependencies are experiencing issues. We combine the status of all the services you dependent and provide a clear view of all your vendors health in one place. We not only monitor official information but also crowdsourced reports. That means that even when cdnjs, per example, doesn't report an outage, you will still be notified if other users are experiencing issues.

How IsDown monitors cdnjs?

IsDown monitors cdnjs health in almost real-time

Every few minutes we go to the status page of cdnjs (and 4,522+ other services) and check if they are experiencing issues. We collect the status and outage information of cdnjs's 4 components. Also, we not only monitor official sources but also user reports. Sometimes or a lot of times vendors take some time to report an incident, so by monitoring user reports we're able to alert you early.

The moment an issue is detected in cdnjs, IsDown sends an alert and updates your status page

Not only you will get notified, but IsDown offers notification filters, so you can choose which issues you want to be notified about. This way you avoid getting all the incidents from cdnjs and other services.

One status page to monitor all your external dependencies

What you get when monitoring cdnjs with IsDown

Track cdnjs incidents and downtimes by severity

IsDown checks cdnjs official status page for major/minor outages or downtimes. A major outage is when cdnjs experiences a critical issue that severely affects one or more services/regions. A minor incident is when cdnjs experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. The moment we detect a cdnjs outage, we send you an alert and update your dashboard and status page.

Get alerted as soon as users reports problems with cdnjs

cdnjs and other vendors don't always report outages on time. IsDown collects user reports to provide early detection of outages. This way, even without an official status update, you can stay ahead of possible problems.

All the details of cdnjs outages and downtimes

IsDown collects all information from the outages published in cdnjs status page to provide the context of the outage. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.

Prepare for upcoming cdnjs maintenance events

cdnjs publishes scheduled maintenance events on their status page. IsDown collects all the information for each event and creates a feed that people can follow to ensure they are not surprised by unexpected downtime or problems. We also send the feed in our weekly report, alerting the next maintenances that will take place.

Only get alerted on the cdnjs outages that impact your business

IsDown monitors cdnjs and all their 4 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.

One platform to monitor all your external dependencies

Our tool was build to be the best way to monitor all your external dependencies in one place. IsDown not only will help you monitor cdnjs but also 4,522 other services. Your team and customers will have a clear view of all your dependencies and their status, making it easier to identify and resolve issues.

Monitor cdnjs and all your external dependencies in real-time

Add all your dependencies to your dashboard. IsDown will monitor them in real-time and send you alerts when there is an issue. You can also create a status page for a bird-eye view and share it with your team.

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Monitor cdnjs and all your external dependencies in real-time

Get notified imediatelly when there's an issue with cdnjs or other services

Not only you will get notified, but IsDown offers notification filters, so you can choose which issues you want to be notified about. This way you avoid getting all the incidents from cdnjs and other services.

Start Monitoring for Free
Get notified imediatelly when there's an issue with cdnjs or other services

Send outage information from cdnjs and other services to your tools

IsDown integrates with 20+ tools. Connect the status of cdnjs and 4,522 other vendors to your tools to receive vendor outage alerts exactly where your team needs them.

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Send outage information from cdnjs and other services to your tools

Share cdnjs status in your status page

Create a status page that can easily be access by your team and customers. You can make it public or private, and customize it to your needs. This will be your first line of communication when there's the question 'Is cdnjs down?'

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Share cdnjs status in your status page

cdnjs Downdetector vs IsDown

While Downdetector relies on user-submitted reports to detect cdnjs outages, IsDown monitors cdnjs's status page for verified, detailed incident information. Here's why official monitoring provides better reliability for your business:

Features
Downdetector
Official cdnjs status page monitoring with real-time incident details.
Monitor 4,522+ services including cdnjs in a single dashboard.
Instant cdnjs outage alerts sent to Slack, Teams, PagerDuty, and more.
Combined monitoring of cdnjs official status and user-reported issues.
Maintenance feed for cdnjs
Granular alerts filtering by cdnjs components and regions.
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Frequently Asked Questions

Is cdnjs down today?

cdnjs isn't down. You can check cdnjs status and incident details on the top of the page. IsDown continuously monitors cdnjs official status page every few minutes. In the last 24 hours, there were 0 outages reported.

What is the current cdnjs status?

cdnjs is currently operational. You can check cdnjs status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.

Is there a cdnjs outage now?

No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.

Is cdnjs down today or just slow?

Currently there's no report of cdnjs being slow. Check on the top of the page if there are any reported problems by other users.

How are cdnjs outages detected?

IsDown monitors the cdnjs official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.

Is cdnjs having an outage right now?

cdnjs last outage was on June 12, 2025 with the title "API outage"

How to check if cdnjs is down?

Why use IsDown to monitor cdnjs instead of the official status page?

Because IsDown is a status page aggregator, which means that we aggregate the status of multiple cloud services. You can monitor cdnjs and all the services that impact your business. Get a dashboard with the health of all services and status updates. Set up notifications via Slack, Datadog, PagerDuty, and more, when a service you monitor has issues or when maintenances are scheduled.

How IsDown compares to DownDetector when monitoring cdnjs?

IsDown and DownDetector help users determine if cdnjs is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information instead of just relying on reports from users. The integration allows us to provide more details about cdnjs's Outages, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.

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