API testing tool (REST client)

Send a REST request with custom method, headers and body, and inspect the response status, headers and body.

Method

URL

Headers (one per line, "Key: Value")

Frequently asked questions

Why does my request fail?

Browsers block cross-origin requests unless the target server explicitly allows it (CORS). This is a browser security restriction, not a bug in this tool.

Related tools

See all 28 free developers tools

Text Diff Checker

Compare two texts and see exactly what was added or removed.

Use Text Diff Checker

Markdown Previewer

Write Markdown and see a live rendered preview side by side.

Use Markdown Previewer

Markdown to HTML

Convert Markdown source into raw HTML markup to copy anywhere.

Use Markdown to HTML

HTML to Markdown

Convert HTML markup into clean Markdown source.

Use HTML to Markdown

API testing tool (REST client)

Send a REST request with custom method, headers and body, and inspect the response status, headers and body.

Method

URL

Headers (one per line, "Key: Value")

Frequently asked questions

Why does my request fail?

Browsers block cross-origin requests unless the target server explicitly allows it (CORS). This is a browser security restriction, not a bug in this tool.

Related tools

See all 28 free developers tools