REAL MEASUREMENTS · CONTINUOUS OBSERVATION · DECISION SUPPORT

Connecting providers.
Informing CDN choices.

CdnChart uses ongoing observations and performance comparisons to help people working on the internet understand how CDNs perform. Join us in building more useful data for informed decisions.

Explore participation

01 / REAL MEASUREMENTSReal measurementsProbe requests provide measured evidence of network performance.

02 / REGIONAL PERSPECTIVESRegional perspectivesCompare the experience across locations and network operators.

03 / CONTINUOUS OBSERVATIONContinuous observationFollow historical samples and trends to understand stability and variation.

04 / OPEN METHODOLOGYOpen methodologyReview methods, sample sizes and update times to assess the evidence.

01 — PARTICIPATE

Better data for CDN evaluation and selection

Broader samples and continued network observations help users understand CDN performance and suitability for their needs.

Join testing or support the platform

Review partnership

Share CDN product information and test resources so we can observe regional performance and offer users more evidence for comparison.

Provide test domains, resources and product details
Discuss target regions and feasible test coverage
Present observations using consistent methods

Resource sponsorship

Support probe operations, coverage and long-term observations through servers, bandwidth, test traffic or operating resources.

Support probe deployment and routine testing
Contribute bandwidth, traffic or operating resources
Acknowledge providers supporting the platform

Advertising

On-site placements are available for relevant CDN and cloud products. Advertising is clearly labeled; locations, artwork and schedules are discussed individually.

On-site banners and sidebar placements
Clearly distinguish promotion from evaluation
Placement does not affect scores or rankings

Grounded in real measurementsConsistent methods, clear sample sizes and update times. Partnerships and sponsorships do not change how data is presented.

QUESTIONS, CONTRIBUTIONS & FEEDBACK

Help make CDN decisions better informed.

alvinacrochetxk54@gmail.com @CdnChart

Testing and partnerships

How does a testing partnership help users?

Product details and test resources help expand observations of regional performance. Users can combine website tests, CDN comparisons and selection guidance to find options that fit their needs.

How can a provider participate?

Share your provider name, website, CDN product information, test domains or resources, and target regions. We will discuss the feasible testing scope based on probe coverage and available capabilities.

How are testing partners different from sponsors?

Testing partners contribute CDN product information and resources for evaluation. Sponsors support probes, bandwidth, traffic or operations. These relationships are shown separately, and a provider can participate in both.

Do partnerships, sponsorships or ads affect the results?

Testing and presentation principles remain consistent. Commercial relationships do not add points to scores or rankings. Ads are labeled, and users can assess results alongside sample sizes, update times and methodology.

What should I consider when choosing a CDN using the data?

Start with the regions your users are in, then compare latency, availability, sample sizes and update times. Read the page labels to distinguish measurements from reference data, and validate your choice against your own workload.

How can I report a testing issue or incorrect product information?

Please share the relevant page, domain, testing time, region or operator, and the issue observed. For product updates, official documentation links are helpful.

Contact CdnChart

Share measurement feedback, product information, or ideas for testing partnerships and resource support.