What is the difference between nofollow and dofollow links ?

both links are important if no follow link you get from high-quality site then it's will be good for your business

No follow link not crawled in google. but dofollow crawled in google. Both are important in ranking factors.

Hello Liz Seyi,
A no follow link means that the author doesn't want the search engines ti index the content. And for your do follow link is just the opposite.

Nofollow links attributes do not allow search engine bots to follow the link. That means if the website owner is linking back to you with nofollow attributes, it does not pass on link juice. Dofollow links allow google (all search engines) to follow them and reach our website. Giving us link juice and a backlink. Aditi Arora said it above and this is correct.

Nofollow means Google doesn't consider those as backlinks but those are still useful if taken from project relavent sites.
Dofollow means Google crawl and index those links as valid backlinks.

From search results:
NO FOLLOW; For many SEO experts, a nofollow link from a reputable site is more valuable than a dofollow link from a low Domain Authority site. They can show you exactly how much traffic and how much “link juice” your links are creating, regardless if they're labeled as “nofollow.”

The only technical difference between the two is that a nofollow link has a nofollow tag. However, they ONLY count dofollow links in their algorithm. In fact, according to Google, nofollow

No follow link link are used to avoid the search engine from crawling the particular link so that unwanted traffic can be avoided. Do follow links,are meant do be crawled by the search engine to attract traffic from that link.

No- follow link - Links not counted by Google.
Do follow link - Links counted by google.

Nofollow links won't have much of a direct impact on improving your search rankings, because they don't transfer search equity from one site to another.

Dofollow links help your search engine rankings. Nofollow links don’t.

Nofollow links attributes do not allow search engine bots to follow link. That means if the website owner is linking back to you with nofollow attributes, it does not pass on link juice.

Thanks to all.........

Do-follow link: crawled in google.
No-follow link: not crawled in google.

both are important for ranking for your website.

do follow links pass link juice that is page authority to the site being linked, which no follow links don't. therefore, do follow link help seo ranking and no follow don't

Do-follow link crawled in google which is not for no follow

nofollow - not allow the crawler to read the link, dofollow - allow the crawler to read the link

Nofollow links are the links which are not indexed by web crawlers and it is used only to generate website traffic. Dofollow links are the links which are indexed by web crawlers and it increases the link juice as well. Important for SEO.

With the nofollow link spiders from search engines don't follow the link, and with dofollow link the spiders will crawl the link and follow and index the page of the link.

The only technical difference between the two is that a nofollow link has a nofollow tag. ... However, they ONLY count dofollow links in their algorithm. In fact, according to Google, nofollow links don't pass any PageRank. Google does not transfer PageRank or anchor text across these links

nofollow means crawler does not follow the link but dofollow crawler follow the links.
nofollow as Google new updates- started count as a hint but dofollow still very important for better ranking.