facebook人臉照片_為什么您的Facebook照片看起來如此糟糕（以及您可以如何做）...

facebook人臉照片

Facebook is a popular platform for sharing photos, even though it’s not a very good one. They?prioritize fast loading images over high quality ones. You can’t stop it from happening, but you can minimize the quality loss.

Facebook是一個受歡迎的照片共享平臺，盡管它不是一個很好的平臺。他們優先考慮快速加載圖像而不是高質量圖像。您無法阻止它的發生，但是可以最大程度地減少質量損失。

In the image above, you can see a side-by-side close up of the original photo and the version that’s on Facebook. The difference is noticeable. And?Facebook is going to make some changes to pretty much any photo you upload in order to compress them so they load faster. There’s nothing you can do to totally stop this—if you want a high quality photo sharing site, check out something like 500px—but you can at least minimize the drop in quality when you upload pictures. Let’s look at how.

在上圖中，您可以并排特寫原始照片和Facebook上的版本。區別是明顯的。 Facebook將對您上傳的幾乎所有照片進行一些更改，以便對其進行壓縮，以便更快地加載它們。您無法采取任何措施完全阻止這種情況-如果您想要一個高質量的照片共享站點，請簽出500px之類的東西-但您至少可以在上傳圖片時將畫質下降降至最低。讓我們看看如何。

Facebook對您的照片有何作用？ (What Does Facebook Do to Your Photos?)

In Facebook’s own words, when you upload an image, they “automatically resize and format your photos” so they’ll display properly on the site and in the apps. For example, if someone posts a single photo as a status update, that photo shows up on your News Feed with a resolution of 476 pixels wide by a maximum of 714px tall. Unless you upload your photo at that exact resolution, Facebook needs to do some scaling. And if you do upload your photo at that resolution, it’s going to look awful if someone clicks on it to see it zoomed in.

用Facebook的話來說，當您上傳圖片時，它們會“自動調整照片的大小和格式”，以便它們在網站和應用程序中正確顯示。例如，如果有人發布一張照片作為狀態更新，則該照片將以476像素寬，最大714px高的分辨率顯示在您的新聞Feed中。除非您以該精確分辨率上傳照片，否則Facebook需要進行一些縮放。而且，如果您確實以該分辨率上傳照片，那么如果有人單擊它以將其放大會顯得非常糟糕。

To give you an idea of the sort of thing that happens if you leave Facebook to it’s own devices, I uploaded the photo above which is 2.7MB and has a resolution of 5166 by 3444 pixels. When I downloaded it again from Timeline, it had a resolution of 960 by 640 pixels and was just 74 KB in size.

為了讓您大致了解如果您將Facebook留在自己的設備上會發生的事情，我上傳了上面的照片，該照片為2.7MB，分辨率為5166 x 3444像素。當我從時間軸再次下載它時，它的分辨率為960 x 640像素，大小僅為74 KB。

When I went into my Photos collection on Facebook, I was able to grab a 1938 by 1292 pixel version that was 348KB, but even that represents some seriously aggressive optimizing!

當我進入Facebook上的“照片”收藏集時，我能夠獲得1938 x 1292像素的版本，即348KB，但這甚至代表了一些非常激進的優化！

如何使您的照片在Facebook上看起來更好 (How to Make Your Photos Look Better on Facebook)

Let’s make one thing clear; your photos are never going to look objectively great on Facebook. You can, however, take steps to make them look better.

讓我們澄清一件事；您的照片永遠不會在Facebook上客觀地看起來很棒。但是，您可以采取措施使它們看起來更好。

First, you need to upload them in the right size. This minimizes how much resizing Facebook does. Plus, when you adjust your own photos, you have the option of doing a little cropping instead of resizing. Facebook recommends three sizes: 720 pixels, 960 pixels, and 2048 pixels wide. For photos, we can safely ignore the two smaller options; they’re just ludicrously small. That leaves us with one ideal size: 2048 pixels wide.

首先，您需要以正確的大小上傳它們。這可以最小化Facebook的大小調整。另外，當您調整自己的照片時，可以選擇進行一些裁剪而不是調整大小。 Facebook建議使用三種尺寸：720像素，960像素和2048像素寬。對于照片，我們可以放心地忽略兩個較小的選項。他們只是小得可笑。這就給我們提供了一個理想的尺寸：2048像素寬。

Next, you want to upload photos in the right color space. Facebook uses sRGB—the standard color profile for most displays. The good news is, you probably don’t have to change much here. sRGB is the color space used for 99% of JPEGs. If you take a photo with your smartphone or export one you take with your DSLR from Photoshop, Lightroom, or any major editing app, it’s going to be in the sRGB color space.

接下來，您要在正確的色彩空間中上傳照片。 Facebook使用sRGB(大多數顯示器的標準顏色配置文件)。好消息是，您可能不需要在這里進行太多更改。 sRGB是用于99％JPEG的色彩空間。如果您使用智能手機拍攝照片或通過Photoshop，Lightroom或任何主要的編輯應用程序導出使用數碼單反相機拍攝的照片，則它將位于sRGB色彩空間中。

Realistically, if you have images that aren’t in the sRGB color space, you probably made a deliberate decision at some point to use something with a wider color gamut and know what you’re doing. You can check what color space a photo is using by viewing its metadata. You can see here that the selfie I shot with my iPhone is in sRGB, so I don’t need to change anything.

實際上，如果您的圖像不在sRGB色彩空間中，則您可能在某個時候做出了明智的決定，即使用色域更廣的圖像并知道您在做什么。您可以通過查看照片的元數據來檢查照片使用的顏色空間。您可以在這里看到我用iPhone拍攝的自拍照采用sRGB，因此我不需要進行任何更改。

If you do have an image in a non-sRGB color space, you can either let Facebook take care of the conversion, or open the image in your image editor of choice and save it using the default JPEG settings. As you can see below, Photoshop’s defaults automatically convert the color profile to sRGB.

如果確實有非sRGB色彩空間中的圖像，則可以讓Facebook負責轉換，也可以在所選的圖像編輯器中打開圖像，然后使用默認的JPEG設置進行保存。如下所示，Photoshop的默認設置會自動將顏色配置文件轉換為sRGB。

Through a bit of experimenting, I’ve found that Facebook compresses the highest quality versions of your images to just under 500 KB. Unfortunately, even when I uploaded photos that fell under this limit, Facebook still compressed the image. In fact, they compressed it even more than when I uploaded the 2.4 MB version. For this reason, rather than compress images yourself, we recommend uploading the highest quality JPEG you can.

通過一些試驗，我發現Facebook將圖像的最高質量版本壓縮到不足500 KB。不幸的是，即使我上傳的照片低于此限制，Facebook仍然會壓縮圖像。實際上，它們壓縮的程度甚至比我上載2.4 MB版本時還要大。因此，建議您上載最高質量的JPEG，而不是自己壓縮圖像。

Finally, Facebook has two separate qualities of uploads: Normal Quality and High Quality. Normal Quality is used for almost everything (posting an image as a Status Update or Profile Picture, for example). High Quality is only available when you upload images to a photo album.

最后，Facebook具有兩種不同的上傳質量：“正常質量”和“高質量”。正常質量幾乎用于所有事物(例如，將圖像發布為狀態更新或個人資料圖片)。僅當您將圖像上傳到相冊時，“高質量”才可用。

If you’re serious about having the highest quality images possible on Facebook, the best thing to do is upload your images to a photo album, and then share them from there. When you add images to an album, to upload them in High Quality, make sure the “High Quality” option is enabled. You can also set it to the default on your smartphone.

如果您真的想在Facebook上擁有最高質量的圖像，最好的做法是將圖像上傳到相冊，然后從那里共享它們。將圖像添加到相冊時，要以高質量上傳圖像，請確保啟用了“高質量”選項。您也可以在智能手機上將其設置為默認值。

If you follow all these steps, while we can’t guarantee your photos will look good, they’ll at least look better than if you leave Facebook to its own devices.

如果您按照所有這些步驟操作，盡管我們不能保證您的照片看起來不錯，但與您將Facebook留在自己的設備上相比，它們至少看起來更好。

關于封面照片的注釋 (A Note On Cover Photos)

Cover photos (the image that appears at the top of your Timeline) are a bit of a special case. While all the tips above still apply, the exact values you should use change.

封面照片(出現在時間軸頂部的圖像)有點特殊情況。盡管以上所有技巧仍然適用，但您應使用的確切值會發生變化。

For the highest quality cover photo, you want to upload an image that is 851 pixels wide. If you don’t want it cropped on your profile, you need to have the image be 315 pixels tall as well.

要獲得最高質量的封面照片，您要上傳851像素寬的圖像。如果您不希望它出現在個人資料中，則還需要使圖像高315像素。

Facebook also compresses cover photos to less than 100 KB. If you upload an image that’s less than 100 KB in size, it won’t be compressed at all.

Facebook還將封面照片壓縮到小于100 KB。如果您上傳的圖片大小小于100 KB，則完全不會對其進行壓縮。