Robots.txt Magento 2

Robots.txt

# Allow Full Access

User-agent:*
Disallow:

# Disallow Access to All Folders

User-agent:*
Disallow: /

# Default Instructions

Disallow: /lib/
Disallow: /*.php$
Disallow: /pkginfo/
Disallow: /report/
Disallow: /var/
Disallow: /catalog/
Disallow: /customer/
Disallow: /sendfriend/
Disallow: /review/
Disallow: /*SID=

# Restrict User Account & Checkout Pages

Disallow: /checkout/
Disallow: /onestepcheckout/
Disallow: /customer/
Disallow: /customer/account/
Disallow: /customer/account/login/

# Disallow Catalog Search Pages

Disallow: /catalogsearch/
Disallow: /catalog/product_compare/
Disallow: /catalog/category/view/
Disallow: /catalog/product/view/
Disallow URL Filter Searches
Disallow: /*?dir*
Disallow: /*?dir=desc
Disallow: /*?dir=asc
Disallow: /*?limit=all
Disallow: /*?mode*

# Restrict CMS Directories

Disallow: /app/
Disallow: /bin/
Disallow: /dev/
Disallow: /lib/
Disallow: /phpserver/
Disallow: /pub/

# Disallow Duplicate Content

Disallow: /tag/
Disallow: /review/
 
# Allow pagination 
Allow: /*?p=