When it comes to downloading files, testing servers, or scraping web content from the command line, two tools are famous: cURL and wget. Both are powerful, widely used, and support numerous protocols, but they serve different purposes.
Choosing one of them depends upon your goals; do you need a fast file downloader or a flexible tool for making HTTP requests?
Let’s dive into what makes cURL and wget similar, what sets them apart, and when to use one.
What is cURL?
cURL (Client URL) is a command-line application to upload or download files to or from a server. It allows various protocols such as HTTP, HTTPS, FTP, FTPS, SCP, SFTP, LDAP, and so on. It does not do so well in scenarios where intimate control of HTTP requests and responses are needed.
Its strength lies in versatility. cURL allows users to specify HTTP methods (GET, POST, PUT, DELETE), customize headers, send from data, manage cookies manually, and interact with REST APIs, all from a single command.
curl -X POST -d "email=user@example.com&password=1234" https://example.com/loginThis flexibility can make curl particularly useful to developers creating and using APIs, and to anyone writing web scrapers that require access to more browser-like functionality.
What is Wget?
Wget is a command-line tool focused primarily on downloading files from the web. Unlike curl, it was built with non-interactive downloading in mind, making it ideal for retrieving large files, entire directories, or recursively mirroring websites.
It uses the HTTP, HTTPS, and FTP protocols and has inherent features to resume downloads, follow redirects, as well as convert links to offline use. It is typically more straightforward to use than curl.
Basic Usage
wget https://example.com/file.zipFor mirroring an entire website:
wget --mirror --convert-links https://example.comWget’s automation-friendly design makes it suitable for long-running batch downloads or archiving operations.
cURL vs Wget: Feature Comparison
| Feature | cURL | Wget |
| Protocols | HTT, HTTPs, FTP ,STFP, more | HTTP, HTTPS, FTP |
| Downloading files | Yes | Yes |
| Recursive Downloads | No | Yes |
| HTP Method Support | Full (Get, POST, PUT, DELETE,etc” | Primarily GET |
| Cookie Management | Manual | Automatic |
| Resume Support | Yes(-C -) | Yes(-c) |
| Proxy Support | Yes | Yes |
| Website Mirroring | No | Yes |
| Typical Use Case | API calls, custom HTTP requests | Downloading or mirroring files |
When to Use Curl
Curl is the favorite utility of users who demand a more advanced degree of control over HTTP requests. It is used when:
- Communication with REST APIs.
- Transmission of form data and custom header.
- Recreating of endpoints of the web servers’ configuration.
- Inspection of endpoints of the web servers.
- Integrating with proxy services like Proxying for dynamic IP rotation or geolocation testing.
That customization option allows it to build bespoke requests and raw server responses, making it an essential tool for both developers and data engineers.
When to use Wget
Wget is set in a situation where the main goal is to download. It mainly works on:
- The document is a large archive or a large file to download.
- Websites with an offline mirror.
- Periodic (scripted) downloads.
- Responding to unreliable network connections using automatic retries and resuming.
Proxy Integration: Curl and Wget
Both curl and wget have options to specify a proxy, so they fit with some proxy services (such as Proxying). Having to rotate IPs, test location-specific content, or overcome rate limits, both of the tools enable easy integration into HTTP, HTTPS, or SOCKS proxies.
Curl with a Proxy
curl -x http://your-proxy:port https://example.comWget with a proxy
wget -e use_proxy=yes -e http_proxy=http://your-proxy:port https://example.comWhen scraping or accessing geo-restricted cultures on a large scale, such tools may only have a modicum of success, but when combined with Proxying’s scale proxy infrastructure, this makes scraping and access much more reliable and available.
Which Tool Should You Choose?
Your choice to use curl or to use wget must depend on your needs:
- Go with curl when you are working with APIs, to build HTTP requests or even analyze server responses.
- Use wget when you are more concerned about downloading files or getting a recursive list of the static contents of a site.
In practice, it is common to find that developers and data professionals maintain both tools in their arsenal and use one tool or the other depending on the situation.
Conclusion
Although curl and wget seem identical at first glance, they are used for different things. Curl provides fine-grained control over HTTP requests that it makes for API calls and for web scraping with custom headers/load payloads. As opposed to wget, which is all about reliable downloading and automation of, mainly, static or recursive retrieval.
