curl / Documentation Overview

Documentation Overview

The main documentation is sub divided into several categories. Each category holds a number of documentation pages.

The book: Everything curl

This is a detailed and totally free book, available online (and as a PDF as a link from there) that explains everything there is to know about curl, libcurl and the associated project.

Learn how to use curl. How to use libcurl. How to build them from source or perhaps how the curl project accepts contributions. There is something for everyone in this, from the casual first-time users to the experienced libcurl hackers.

Presentations on Video

We have a large selection of video presentations gathered about various areas in curl and related technologies.

curl tool documentation

Comparison Table, curl manpage, HTTP Scripting, mk-ca-bundle, Tutorial

The project

Bug Report, Code of conduct, Dependencies, Donate, FAQ, Features, History, Install, Known Bugs, Logo, TODO, website Info


Changelog, Release Table, CVEs, Version Nums. Vulnerabilities, Vulnerability Disclosure Policy


alt-svc, CA Extract, HSTS, HTTP Cookies, HTTP/2, HTTP/3, SSL Certs, SSL libs compared, URL syntax

Who and Why

Companies, Copyright, Sponsors, Thanks, The Name


The libcurl sub section of the site is huge!


Plenty of documentation and details if you want to work on curl or libcurl themselves.