Is there any official site for anime and manga ranking? I know some site for anime and manga, and they have some kind of rating and ranking, but their rating and ranking are different. I'm wondering if there are any official site for anime, maybe something like IMDB? Honestly, I don't really know if IMDB is official or not, but if someone is to ask for the rating of a movie, they always say to look it in IMDB.
As far as I know there is no official ranking site for anime/manga.
The closest thing you could get to an official ranking would be ranking them according to their sales, which gets featured on a lot of sites. An example would be this MyAnimeList post. More info and sites can be found on the post Where can one learn about viewership ratings for anime?, where some nice sites have been listed.
Most other rating sites are, as hungerartist mentioned, user rated and therefore not official.
OP please read this, I took the time to write it for you
I write this hoping to rid you of some misconceptions you seem to have. Even though it's been almost 2 years, I took the time to help you.
Very few things can/should get an official rating or ranking. Art, like movies and anime, definitely SHOULD NOT! (or cannot, depending how you see it)
The rating in IMDB is the average of the scores given by random people who took the time to rate in that site. The same could be said of most movie/TV/anime sites that have ratings. IMDB is such a big reference because it has a gigantic amount of users who rate. And that's why it is a good reference and people point you to it. But it isn't an official rating site and it cannot be one.
People are not forced to rate, so any rating you see anywhere is either by a single person or a selection of people. In sites like IMDB that selection is people who have watched that piece, out of everyone in the world, who also:
- Know of and use that site,
- Take the time to rate (publicly),
- Happen to have rated that particular piece.
So ratings/scores are a reference, and you should use them keeping in mind who gave them.
If a website has become the de facto "go to place" for rates/ranks, like IMDB has for movies, then it's a very valuable reference, but not an official consensus of the viewers.
The only numbers you can get that may be "official" are stuff like manga or DVD sales (factual numbers).
For anime, the website that seems to be the big reference in ratings is MyAnimeList (MAL).
My only problem with it is it has no input from Japanese viewers, since (probably) almost no Japanese use it. You only get the input of avid western watchers, and Japanese viewers obviously have a very different context. (I'm looking for a Japanese equivalent to MAL for an extra reference, which was why I found your post).
I recommend you use MAL: not only to see ratings and other information, but to make a list for yourself, even if you normally don't care about doing your own lists and ratings. You can use the list to keep track of what you're watching/have watched, which episode you're on, etc. You can have your own ratings of anime for future reference (influencing the average score by doing so). It's super useful, really, otherwise I wouldn't give them this free publicity.
Hope this wasn't a total waste. All the best.
No, there's nothing official, as there's nothing official that regulates anime industry or something. You can try Dimitri's solution, but I would recommend sticking to Anime News Network and looking at their sales reports instead of seeing what's popular.
Sales charts are more useful, popularity often has a multiplier effect.