---
title: Pragma
slug: Web/HTTP/Headers/Pragma
page-type: http-header
status:
- deprecated
browser-compat: http.headers.Pragma
---
{{HTTPSidebar}}{{Deprecated_Header}}
The HTTP **`Pragma`** header is an implementation-specific header that may have various effects along the request-response chain.
This header serves for backwards compatibility with HTTP/1.0 caches that do not support the {{HTTPHeader("Cache-Control")}} HTTP/1.1 header.
> [!NOTE]
> The `Pragma` header is not specified for HTTP responses and is therefore not a reliable replacement for the HTTP/1.1 `Cache-Control` header, although its behavior is the same as `Cache-Control: no-cache` if the `Cache-Control` header field is omitted in a request.
> Use `Pragma` only for backwards compatibility with HTTP/1.0 clients.
Header type
{{Glossary("Request header")}},
{{Glossary("Response header")}} (response behavior is not specified and is implementation-specific).
{{Glossary("Forbidden header name")}}
No
{{Glossary("CORS-safelisted response header")}}
Yes
## Syntax
```http
Pragma: no-cache
```
## Directives
- `no-cache`
- : Same as `Cache-Control: no-cache`. Forces caches to submit the request to the origin server for validation before a cached copy is released.
## Examples
```http
Pragma: no-cache
```
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}
## See also
- {{HTTPHeader("Cache-Control")}}
- {{HTTPHeader("Expires")}}