About HTTP Request Tool
Makes an HTTP request and returns the response. This operation supports different HTTP verbs like GET, POST, PUT, etc. You can add headers line by line in the format Key: Value The status code of the response, along with a limited selection of exposed headers, can be viewed by checking the 'Show response metadata' option. Only a limited set of response headers are exposed by the browser for security reasons.
Input: text. Output: text.
Format reference: HTTP request background and specification
Example
Use “Try example” to load this public sample and its settings, then run it.
Settings used in this example
| Parameter | Example value | Input and choices |
|---|---|---|
| Method | GET | GET, POST, HEAD, PUT, PATCH, DELETE, CONNECT, TRACE, OPTIONS |
| URL | "https://serialize.dev/tool-samples/hello.txt" | Text |
| Headers | "" | Text |
| Mode | Cross-Origin Resource Sharing | Cross-Origin Resource Sharing, No CORS (limited to HEAD, GET or POST) |
| Show response metadata | false | On or off |
Input
The input is empty because this example uses the settings to generate its result.
Result
Hello from Serialize!
Browser network restrictions
Requests contact the destination you provide. Cross-origin servers must allow access through CORS. This page is not a proxy and cannot bypass a server’s authentication or browser security restrictions.
Parameters
| Parameter | Default value | Input and choices |
|---|---|---|
| Method | GET | GET, POST, HEAD, PUT, PATCH, DELETE, CONNECT, TRACE, OPTIONS |
| URL | "" | Text |
| Headers | "" | Text |
| Mode | Cross-Origin Resource Sharing | Cross-Origin Resource Sharing, No CORS (limited to HEAD, GET or POST) |
| Show response metadata | false | On or off |
Before interpreting the result
Protocol parsers need the correct byte representation and framing. HTTP Request and DNS over HTTPS contact remote services only when you run them; browser network and CORS restrictions still apply.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.