wget is a reliable command-line tool for downloading files from web servers, including secure HTTPS domains. It is commonly used on Linux, macOS, and server environments because it works well in scripts, supports background downloads, and can handle interruptions, redirects, authentication, and recursive retrieval.
Downloading from HTTPS URLs adds a security layer through TLS certificates, which helps verify the remote server and protect data in transit. When certificates are valid, wget usually works with a simple URL; when they are expired, self-signed, misconfigured, or blocked by a proxy, extra options may be needed to diagnose or safely work around the issue.
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This guide covers practical wget usage for single-file downloads, recursive HTTPS downloads, custom output names, retries, redirects, headers, cookies, and authenticated requests, with attention to secure handling of credentials and certificate validation.
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wget is a command-line download utility commonly used on Linux, macOS, and Unix-like systems to retrieve files over HTTP, HTTPS, and FTP. For HTTPS domains, wget connects to the remote server using TLS, verifies the server certificate, and then downloads the requested content if the connection and certificate checks succeed. This makes it useful for downloading software archives, backups, datasets, installation scripts, package files, and mirrored website content from secure URLs.
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The basic HTTPS download pattern is straightforward: you provide wget with an https:// URL, and it saves the remote file into the current working directory. For example, wget https://example.com/file.tar.gz downloads file.tar.gz if the server permits direct access. If the URL does not end with a clear filename, wget derives a local name from the URL path or server response. You can later control that behavior with options such as -O for a specific output filename or -P for a target directory.
How HTTPS changes the download process
When a URL begins with https://, wget performs additional security checks before transferring data. It validates that the certificate is issued by a trusted certificate authority, that the certificate has not expired, and that the hostname in the certificate matches the domain being contacted. If any of these checks fail, wget usually stops with an error rather than silently downloading from an untrusted source.
- Encryption: The file transfer is protected from casual interception while in transit.
- Server verification:
wgetchecks whether the server certificate is trusted and matches the requested domain. - Integrity in transit: TLS helps prevent modification of the downloaded data during transport.
- Policy enforcement: Servers may require redirects, authentication, cookies, or specific headers before allowing downloads.
HTTPS does not automatically prove that a downloaded file is safe to execute or install. It only secures the connection between your machine and the server. For software packages and scripts, it is still good practice to verify checksums, signatures, release s, or package manager metadata when available. A secure wget workflow usually combines HTTPS transport with file integrity verification after the download completes.
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Common wget HTTPS use cases
| Use case | Typical command pattern | Purpose |
|---|---|---|
| Download one file | wget https://domain.com/file.zip |
Save a single remote file locally. |
| Save with a custom name | wget -O app.zip https://domain.com/download |
Control the output filename when the URL is dynamic. |
| Download into a directory | wget -P /tmp/files https://domain.com/file.iso |
Store downloads in a chosen location. |
| Resume a partial download | wget -c https://domain.com/large.tar.gz |
Continue an interrupted transfer when the server supports it. |
In many HTTPS environments, a simple command is enough, but real-world downloads often involve more conditions. A file may sit behind a login page, require an authorization token, redirect through a content delivery network, or fail if your local certificate bundle is outdated. Understanding that wget is both a downloader and an HTTPS client helps explain options for certificates, headers, cookies, retries, and redirects are often needed for reliable secure downloads.
Installing and Verifying wget
Before using wget to download files from HTTPS domains, make sure it is installed and built with HTTPS support. Most Linux distributions include it in their default repositories, but minimal server images, containers, and some macOS systems may not have it available by default. A quick check from the terminal shows whether the command is already present:
wget --version
If wget is installed, this prints version details and build options. Look for HTTPS-related support in the output, such as references to +https, +ssl, GnuTLS, or OpenSSL. For HTTPS downloads, wget must be compiled with TLS support. If the command is not found, install it using your system package manager.
Install wget on common platforms
- Debian, Ubuntu, and Linux Mint:
sudo apt update && sudo apt install wget - RHEL, CentOS, Rocky Linux, AlmaLinux, and Fedora:
sudo dnf install wgetor, on older systems,sudo yum install wget - Arch Linux and Manjaro:
sudo pacman -S wget - openSUSE:
sudo zypper install wget - Alpine Linux:
sudo apk add wget - macOS with Homebrew:
brew install wget
On Windows, you can use wget through Windows Subsystem for Linux, Git Bash, MSYS2, Chocolatey, or a standalone GNU Wget build. For example, with Chocolatey, run choco install wget from an elevated PowerShell session. If you use WSL, install it inside the Linux distribution with the same package commands you would use on a native Linux system.
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Verify HTTPS support
After installation, verify both the binary and HTTPS functionality. First, confirm where the command is being loaded from:
command -v wget
Then check its version and TLS backend:
wget --version
A typical HTTPS-capable build will mention a TLS library such as GnuTLS or OpenSSL. You can also run a small test download against a known HTTPS site:
wget -O /tmp/example.html https://example.com/
If the command connects successfully and saves the page, basic HTTPS downloading is working. On systems without a /tmp directory, such as some Windows shells, choose another output path, for example wget -O example.html https://example.com/.
Check certificate store availability
HTTPS verification depends on trusted Certificate Authority files installed on the system. If wget is installed but HTTPS downloads fail with certificate verification errors, the CA certificate bundle may be missing or outdated. On Debian and Ubuntu systems, install or refresh it with sudo apt install ca-certificates. On RHEL-like systems, use sudo dnf install ca-certificates. Alpine users can run sudo apk add ca-certificates.
Keeping wget and CA certificates updated helps avoid failures with modern HTTPS servers that require current TLS protocols and trusted root certificates. Once wget --version confirms TLS support and a test HTTPS download succeeds, the environment is ready for downloading single files, authenticated resources, redirected URLs, and larger file sets securely.
Downloading Files from HTTPS URLs
Once wget is installed, the simplest HTTPS download uses the command followed by the full URL. For example, downloading a single archive from a secure domain looks like this: wget https://example.com/files/app.tar.gz. By default, wget saves the file in the current working directory using the filename from the URL, so app.tar.gz would appear wherever you ran the command.
You can also specify a different output filename with -O. This is useful when the URL ends in a generic path, includes query strings, or does not expose the final filename clearly. For example: wget -O latest-release.tar.gz https://example.com/downloads/latest. If you want to save the file into a specific directory while keeping the remote filename, use -P: wget -P /tmp/downloads https://example.com/files/report.pdf.
Common single-file download examples
- Download with the original filename:
wget https://example.com/package.zip - Save with a custom filename:
wget -O package-latest.zip https://example.com/download - Download into a target directory:
wget -P ~/Downloads https://example.com/manual.pdf - Continue an interrupted download:
wget -c https://example.com/large-file.iso - Limit download speed:
wget --limit-rate=1m https://example.com/video.mp4
For large HTTPS files, -c is especially practical because it resumes a partial file instead of starting over, as long as the server supports range requests. This is common for ISO images, backups, datasets, and media files. You can combine options as needed, such as wget -c -P ~/Downloads https://example.com/images/linux.iso, which resumes the download and stores the result in the Downloads directory.
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To download mulle HTTPS files, place one URL per line in a text file and pass it with -i. For example, create urls.txt containing several https:// links, then run wget -i urls.txt. This approach is cleaner than pasting a long list of URLs into the terminal, and it works well for repeatable downloads in scripts or scheduled jobs.
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Recursive HTTPS downloads
wget can also retrieve linked content recursively from HTTPS websites. A basic recursive command is wget -r https://example.com/docs/. This follows links under the target page and saves the resulting structure locally. To avoid downloading an entire website, combine recursive mode with depth and path restrictions: wget -r -l 2 -np https://example.com/docs/. Here, -l 2 limits recursion depth, while -np prevents ascending to parent directories.
For a local browsable copy of documentation or static pages, use options that adjust links and fetch page dependencies: wget -r -l 2 -np -k -p https://example.com/docs/. The -p option downloads required assets such as images and stylesheets, while -k converts links so pages work better when opened from disk. Use recursive downloads carefully against HTTPS domains you do not control, and prefer narrow paths, reasonable depth limits, and modest retry settings to avoid excessive traffic.
Handling SSL Certificates and Certificate Errors
When you download from an HTTPS URL, wget verifies the server’s TLS certificate before transferring data. This protects you from connecting to an impostor server or sending credentials over an untrusted connection. A normal HTTPS download looks like this:
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If the site uses a certificate signed by a trusted certificate authority and the hostname matches the certificate, the download proceeds without extra options. Certificate errors usually appear when the certificate is expired, self-signed, issued for another hostname, or when your system’s CA certificate bundle is missing or outdated.
Common certificate errors
- Unable to locally verify the issuer’s authority: The signing CA is not trusted by your system, or the CA bundle is outdated.
- Certificate has expired: The remote server is presenting an expired certificate.
- Hostname mismatch: The certificate does not match the domain in the URL.
- Self-signed certificate: The server uses an internal or test certificate that is not trusted by default.
On most Linux systems, the first fix is to update the CA certificate package. On Debian or Ubuntu, use:
sudo apt update && sudo apt install --reinstall ca-certificates
On RHEL, CentOS, Fedora, AlmaLinux, or Rocky Linux, use:
sudo dnf reinstall ca-certificates
After updating certificates, retry the download. If the issue was caused by an outdated local trust store, wget should now validate the HTTPS connection successfully.
Using a custom CA certificate
For private HTTPS services, development servers, or internal company domains, you may need to tell wget to trust a specific CA certificate. If your organization provides a CA file, pass it with --ca-certificate:
wget --ca-certificate=/path/to/company-ca.pem https://internal.example.com/package.zip
If you have a directory of trusted CA certificates, use --ca-directory instead:
wget --ca-directory=/etc/ssl/custom-certs https://internal.example.com/package.zip
This keeps certificate verification enabled while allowing wget to trust your internal certificate chain. It is safer than disabling validation because the server identity is still checked.
Bypassing certificate checks
wget can ignore certificate validation with --no-check-certificate:
wget --no-check-certificate https://self-signed.example.test/file.iso
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Checking certificate details before downloading
If you need to inspect the certificate chain, use openssl before running wget:
openssl s_client -connect example.com:443 -servername example.com
This shows the certificate subject, issuer, validity dates, and verification result. It is useful when diagnosing expired certificates, missing intermediate certificates, or hostname mismatches. For automated scripts, prefer fixing trust configuration or providing the proper CA file instead of adding --no-check-certificate.
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Many HTTPS downloads are not publicly accessible. A server may require HTTP Basic authentication, a bearer token, a custom header, or an existing login session stored in cookies. wget supports all of these patterns, which makes it useful for downloading files from private repositories, dashboards, APIs, build systems, and protected documentation portals.
HTTP Basic authentication
For sites that use Basic authentication, pass the username and password directly with --user and --password:
wget --user="alice" --password="secret-password" https://example.com/private/report.pdf
This works when the server responds with a standard authentication challenge. To avoid exposing credentials in shell history or process listings, prefer reading credentials from a protected .wgetrc file, an environment-based script, or an interactive prompt where possible. You can force prompting by omitting the password:
wget --user="alice" --ask-password https://example.com/private/report.pdf
Bearer tokens and custom headers
APIs and modern file services often use token-based authentication instead of a username and password. In that case, send the token as an HTTP header with --header:
wget --header="Authorization: Bearer eyJhbGciOi..." https://api.example.com/files/archive.zip
You can send mulle headers by repeating --header. This is useful when a service requires an API key, a specific content type, or a custom client identifier:
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Be careful when copying commands into shared terminals, CI logs, chat tools, or documentation. Tokens in command lines can be captured in shell history and may appear in process lists while the command is running. For automated jobs, use secret storage provided by your CI system and avoid printing the full command.
Downloading with cookies
Some HTTPS sites require a browser login and then authorize downloads using session cookies. If you already have a cookie file in Netscape cookie format, pass it with --load-cookies:
wget --load-cookies cookies.txt https://example.com/account/invoice.pdf
If the server updates the session during the request, save the new cookies with --save-cookies. Add --keep-session-cookies when temporary session cookies must be preserved for later commands:
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wget --load-cookies cookies.txt --save-cookies cookies.txt --keep-session-cookies https://example.com/private/file.zip
For workflows that require a login form, you can first post credentials to the login endpoint and store the resulting cookies, then use those cookies for the protected download:
wget --save-cookies cookies.txt --keep-session-cookies --post-data="username=alice&password=secret" https://example.com/login
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Practical secure usage
- Use HTTPS URLs only when sending passwords, tokens, or cookies.
- Avoid
--no-check-certificatewith authenticated downloads unless you fully control the network and server. - Protect cookie files with restrictive permissions, such as
chmod 600 cookies.txt. - Rotate exposed credentials if a command containing a password or token was stored in logs or shell history.
- Use short-lived tokens for scripts and CI jobs whenever the service supports them.
Authentication failures usually return 401 Unauthorized or 403 Forbidden. A 401 often means credentials were missing or invalid, while a 403 can mean the account is authenticated but does not have permission to access the requested file. Running wget with --server-response can show the HTTP status and response headers, which helps confirm whether the server accepted your authentication method.
Managing Redirects, Retries, and Output Files
HTTPS downloads often involve more than a direct request to a single file. A URL may redirect from HTTP to HTTPS, from one hostname to another, or from a short link to a signed temporary download URL. By default, wget follows redirects automatically, which is usually the desired behavior for software releases, cloud storage links, and CDN-backed downloads. For example, the following command follows the server’s redirect chain and saves the final file using the remote filename when possible:
wget https://example.com/download/latest
If you need to inspect what happens during redirects, add server response output with -S. This shows status codes such as 301, 302, 303, 307, and 308, along with response headers. It is useful when a download unexpectedly returns an HTML login page, an expired signed URL, or a redirect loop:
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wget -S https://example.com/download/latest
Controlling retries and timeouts
Unstable HTTPS connections, rate-limited endpoints, and large file transfers can fail partway through. wget includes retry behavior, and you can tune it for slow or unreliable networks. Use --tries to set the maximum number of attempts, --timeout for a general network timeout, and --waitretry to pause between failed attempts:
wget --tries=5 --timeout=30 --waitretry=10 https://example.com/files/archive.tar.gz
For large downloads, -c continues a partially downloaded file instead of starting over. This is especially useful for ISO images, database dumps, backups, and release artifacts. The remote server must support ranged requests for resume to work correctly:
wget -c https://downloads.example.org/images/server.iso
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wget --tries=3 --wait=2 --random-wait -o download.log https://example.com/file.zip
Choosing output filenames and directories
By default, wget saves a file using the last part of the URL path. If the URL is generic, such as /download or contains query strings, the resulting filename may be unclear. Use -O to set an exact output filename:
wget -O app-release.tar.gz https://example.com/download?version=stable
Use -P to place downloads into a specific directory while keeping the remote filename. This is convenient in scripts where artifacts should land in a known location:
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wget -P /var/tmp/downloads https://example.com/packages/tool.deb
For mulle URLs, avoid using a single -O filename because each download writes to the same target. Instead, provide URLs in a file with -i and let wget preserve each name, or combine it with -P to control the destination directory:
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Recursive HTTPS downloads
Recursive mode can mirror files from an HTTPS site, but it should be used carefully. The -r option enables recursion, -l controls depth, -np prevents ascending to parent directories, and -nH avoids creating a top-level hostname directory. To download a directory tree of public files two levels deep, use:
wget -r -l 2 -np -nH https://example.com/docs/files/
- Limit scope: use
-np,-l, and specific starting URLs to avoid downloading an entire site. - Preserve security: keep certificate verification enabled unless you are testing a trusted internal endpoint.
- Review output: use
-o wget.logfor unattended jobs and inspect HTTP status codes after completion. - Respect servers: add
--waitor--limit-ratewhen downloading many files from the same HTTPS domain.
Troubleshooting Common wget HTTPS Issues
When wget fails against an HTTPS URL, the error message usually points to one of a few common areas: TLS certificate validation, protocol compatibility, redirects, authentication, DNS, proxy configuration, or server-side blocking. Start by running the command with more visibility so you can see the HTTP status codes and TLS negotiation details:
wget -S --debug https://example.com/file.zip
The -S option prints server response headers, while --debug shows connection details that are useful when diagnosing HTTPS failures. If the output is too verbose, try wget -S https://example.com/file.zip first and look for status codes such as 301, 302, 401, 403, 404, or 500.
Certificate and TLS errors
Errors such as ERROR: cannot verify example.com's certificate, unable to get local issuer certificate, or The certificate has expired usually mean that wget cannot validate the server certificate chain. Make sure your system CA bundle is installed and current. On Debian or Ubuntu, update it with sudo apt install ca-certificates followed by sudo update-ca-certificates. On RHEL, CentOS, or Fedora, use sudo dnf install ca-certificates or sudo yum install ca-certificates.
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Authentication, redirects, and access denied responses
A 401 Unauthorized response means the server requires credentials. Use --user and --password for basic authentication, or send a token header such as --header="Authorization: Bearer TOKEN". A 403 Forbidden response often means the server rejected your request because of missing headers, blocked automation, expired cookies, IP restrictions, or insufficient permissions. For sites that require a browser session, export cookies from the browser and use --load-cookies cookies.txt.
Redirect problems are common with HTTPS downloads. By default, wget follows redirects, but a download may fail if the redirect points to a login page, a temporary signed URL that has expired, or a different host that requires separate authorization. Inspect the chain with wget -S https://example.com/download. If you need to limit redirect behavior, use --max-redirect=5.
Network, proxy, and name resolution issues
If you see Temporary failure in name resolution, verify DNS with host example.com or dig example.com. For Connection timed out or No route to host, test basic connectivity with ping, curl -I, or openssl s_client -connect example.com:443 -servername example.com. Corporate networks often require an HTTPS proxy. Configure it temporarily with export https_proxy=http://proxy.example.com:8080, or place proxy settings in ~/.wgetrc.
Some servers reject older TLS versions or clients. If your installed wget is very old, upgrade it before forcing protocol options. Where supported, you can test with --secure-protocol=TLSv1_2 or --secure-protocol=TLSv1_3. Also check the system clock; an incorrect date can make valid certificates appear expired or not yet valid.
Practical checks for failed HTTPS downloads
- Use
-Sto inspect HTTP response headers and status codes. - Use
--debugwhen TLS negotiation or proxy behavior is unclear. - Update
wgetand the system CA certificates before bypassing validation. - Confirm the URL in a browser or with
curl -Ito compare behavior. - Check whether authentication, cookies, custom headers, or a specific user agent are required.
- Use
-cto resume partial downloads when the server supports range requests. - Use
--tries=3and--timeout=30to avoid hanging scripts.
Frequently Asked Questions
How do I download a file from an HTTPS URL with wget?
Use wget https://example.com/file.zip to download the file into your current directory. If you want to choose the output filename, add -O, such as wget -O archive.zip https://example.com/file.zip. For large files, you can resume an interrupted download with wget -c https://example.com/file.zip.
What should I do if wget shows an SSL certificate error?
First, make sure your system date and time are correct, because invalid local time can make certificates appear expired or not yet valid. Update your CA certificates package, such as ca-certificates on many Linux distributions, then try again. If you are using an internal or private certificate authority, pass its certificate with --ca-certificate=/path/to/ca.pem rather than disabling verification.
Is it safe to use –no-check-certificate with HTTPS downloads?
--no-check-certificate disables certificate validation, so wget can no longer confirm that it is connected to the legitimate server. This can expose you to man-in-the-middle attacks, especially on public or untrusted networks. Use it only as a temporary diagnostic step, and prefer installing the correct CA certificate or using --ca-certificate.
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How can I use wget with HTTPS sites that require login?
For basic authentication, use wget --user='username' --password='password' https://example.com/file, or place credentials in a protected .wgetrc file to avoid exposing them in shell history. For session-based websites, export cookies from your browser and use wget --load-cookies cookies.txt https://example.com/file. Some APIs also require headers, which you can send with --header='Authorization: Bearer TOKEN'.
How do I recursively download files from an HTTPS website without grabbing everything?
Use recursive mode with limits, such as wget -r -l 2 -np -nd https://example.com/files/. The -l 2 option limits recursion depth, -np prevents wget from climbing to parent directories, and -nd avoids recreating the full directory structure locally. Add -A pdf,zip to download only selected file types.
Bottom Line
wget is a reliable tool for downloading files from HTTPS domains, whether you need a single file, authenticated access, redirected URLs, or recursive site downloads. Start with the basic syntax, keep certificate validation enabled whenever possible, and use options like --user, --password, --content-disposition, and --recursive only when they match your use case.
If a download fails, check the URL, TLS certificate chain, proxy settings, redirects, permissions, and server authentication requirements before disabling security checks. For routine work, save repeatable commands in scripts, protect credentials, and prefer secure HTTPS verification so your downloads stay both dependable and safe.
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