What is Wget?

Wget is a bot in the HTTP clients and libraries category, operated by GNU Project.

Bot name
Wget
Operator
GNU Project
Type
Bot
Respects robots.txt
No
robots.txt user agent
Wget
Signs requests (Web Bot Auth)
No

About Wget

Wget is a command line tool for downloading files and mirroring websites. Its user agent comes from scripts, backups and site mirroring jobs.

HTTP clients are programming libraries and command line tools. Developers use them for scripts, integrations and scrapers. Real browsers never send these user agents, so treat them as automated traffic and block them on pages meant for people.

Wget user agent

Anyone can copy a user agent string. Transfon Security also checks where each request comes from, so a request that claims to be a known crawler but comes from the wrong network is treated as a fake, not as the real crawler.

How to block Wget in robots.txt

Wget does not read robots.txt. The rules below record your policy, but they will not stop it. To actually block Wget, use a WAF rule as shown in the next section.

Block Wget from the whole site

User-agent: Wget
Disallow: /

Block Wget from some folders

User-agent: Wget
Disallow: /private/
Disallow: /search

Allow Wget only on some folders

User-agent: Wget
Allow: /blog/
Disallow: /

Allow Wget and block other crawlers

User-agent: Wget
Allow: /

User-agent: *
Disallow: /

Things to know

  • Each host needs its own file. Rules on www.example.com do not apply to shop.example.com.
  • A crawler obeys only the most specific group that names it. Once you add a User-agent: Wget group, Wget ignores your User-agent: * rules, so repeat any that should still apply.
  • The user agent name is not case sensitive. We take Wget from Wget's user agent; check GNU Project's own documentation if it publishes a different robots.txt name.
  • Crawlers cache robots.txt, so changes can take up to a day to apply. Disallow stops crawling but does not remove pages already collected or indexed.

Limits of robots.txt

  1. Wget may not follow the rule. Wget does not read robots.txt at all, so a rule for it has no effect.
  2. The user agent could be fake. robots.txt matches the name a request claims. Anyone can send Wget's user agent, and a scraper using it is not bound by GNU Project's robots.txt policy. Only checking the source network tells a real Wget from a fake one.

Treat robots.txt as a statement of your policy, and enforce it where requests arrive.

Who should care about Wget

Publishers

Wget is a common tool for scrapers. Real readers never use it, so block it on article pages and keep it out of ad requests.

Transfon Security for publishers

Media buyers and advertisers

Traffic from Wget on landing pages is automated. It inflates clicks and visits, so filter it from campaign data and raise it with the ad network.

Transfon Security for advertisers

E-commerce

Price scrapers, stock checkers and card testing scripts often run on Wget. Block it on product, cart and checkout pages.

Transfon Security for e-commerce

SaaS and APIs

Wget is normal for API clients but not for your web app. Allow it only on API routes that need a key, and rate limit it there.

Transfon Security for SaaS and APIs

Block Wget with Transfon Security

Wget ignores robots.txt, so it has to be stopped when the request arrives. Transfon Security shows Wget by name in the Top Bots report, so you can see how often it visits and which pages it reads. Block or allow it with a User Agent rule, or slow it down with a rate limit decision rule.

Transfon Security

Control Wget on your site

  • See every Wget visit and the pages it reads
  • Spot bots that fake trusted crawler names
  • Block, allow or rate limit Wget with one rule
  • Works with or without robots.txt support

Frequently asked questions

What is Wget?

Wget is a bot in the HTTP clients and libraries category, operated by GNU Project. Wget is a command line tool for downloading files and mirroring websites. Its user agent comes from scripts, backups and site mirroring jobs.

Does Wget respect robots.txt?

No. Wget does not follow robots.txt, so a Disallow rule will not stop it. Block it by user agent at your server, CDN or WAF instead.

How do I block Wget?

Block requests whose user agent contains "Wget" at your server, CDN or WAF, because Wget does not read robots.txt. In Transfon Security that is one User Agent block rule.

Is robots.txt enough to block Wget?

No. robots.txt is voluntary, so Wget may not follow it, and anyone can send Wget's user agent, so a fake Wget ignores your rule. Enforce the rule where requests arrive, at your WAF, and check the source network.

Should I block Wget?

HTTP clients are programming libraries and command line tools. Developers use them for scripts, integrations and scrapers. Real browsers never send these user agents, so treat them as automated traffic and block them on pages meant for people.

Related bots

All HTTP clients and libraries · Full bot directory

See Which Bots Visit Your Site

Transfon Security identifies every bot in this directory in your traffic reports, flags fake search crawlers, and lets you allow, block or rate limit each bot.

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