Jul 28, 2025 · The HTTP ETag (entity tag) response header is an identifier for a specific version of a resource. It lets caches be more efficient and save bandwidth, as a web server does not need to …

The ETag or entity tag is part of HTTP, the protocol for the World Wide Web. It is one of several mechanisms that HTTP provides for Web cache validation, which allows a client to make conditional …

Jul 12, 2025 · An entity tag (ETag) is an HTTP header used for Web cache validation and conditional request from browsers to resources. The value of an ETag is an identifier that represents a specific …

ETag is an HTTP response header field that helps with caching behavior by making it easy to check whether a resource has changed, without having to re-download it – a process known as "revalidation".

The ETag (or entity tag) HTTP response header is an identifier for a specific version of a resource. It lets caches be more efficient and save bandwidth, as a web server does not need to resend a full …

Sep 17, 2025 · The ETag (Entity Tag) header is an HTTP response header that uniquely identifies a specific version of a resource on the server. Whenever the resource changes, the server generates a …

Sep 17, 2025 · What is an ETag Header? The ETag (Entity Tag) header is an HTTP response header that acts as a unique identifier for a specific version of a resource represented by a URL.

Jun 26, 2025 · An ETag (Entity Tag) is an HTTP response header that acts as a unique identifier for a specific version of a resource, such as HTML, JavaScript, or image files.

Jun 2, 2022 · What is 'ETag'? Learn how to use this HTTP header, with free examples and code snippets.

When a server creates an ETag for a resource, it generates a unique identifier based on the file's contents, the timestamp, or a combination of both. The generation of ETags can vary depending on …