了解网站何时更新可以让您随时了解他们的新内容。幸运的是，除了在您想知道站点是否已更改时一时兴起手动检查之外，还有多种方法可以做到这一点。
根据您正在监视更新的站点，您可以收到任何有关任何事情的警报 — 突发新闻故事、全新产品、博客更新、新车、更新的软件等。网站监视器甚至可以帮助您了解何时访问网站离线。
一些网站具有内置的监控工具，您可以使用这些工具在它们发布新内容时与它们保持同步。其他人可能没有任何此类功能，但您仍然可以利用第三方服务来监控这些页面的更改。
使用他们的电子邮件通讯
网站向访问者提供电子邮件通讯(email newsletter)真的很常见。它们几乎总是完全免费的，只需要您的电子邮件地址(email address)。订阅后，每次网站发布新内容时，您都会收到一封电子邮件。
有时，您可以自定义时事通讯以仅订阅您希望收到提醒的内容类型。其他时候，网站会选择性地选择何时以及向您发送什么电子邮件，但这对于不经常发布(t release)具有新闻价值的信息的网站来说更为常见。
提示：不确定您使用的电子邮件提供商(email provider)？有很多选择，包括一次性电子邮件帐户(disposable email accounts)以及匿名和私人电子邮件服务(anonymous and private email services)。
订阅他们的 RSS 提要
RSS提要由一些网站发布，让访问者通过提要阅读器(feed reader)程序保持更新。您可以通过网络应用程序(web app)
在线使用提要阅读器(feed reader)，通过下载在您的计算机上使用，或者通过您的移动设备与RSS 阅读器(RSS reader)应用程序一起使用。
要了解您要检查更新的网站是否使用RSS，请查找橙色图标(orange icon)，可能位于角落或页面顶部/底部的某个位置，靠近搜索栏(search bar)或社交媒体图标周围。
如果找不到按钮，大多数提要阅读器都允许您扫描网站以查找RSS 提要(RSS feed)并提供订阅它们的简单方法。如果该站点没有(site doesn)RSS 提要(RSS feed)，但您想要它，请尝试使用 FetchRSS 之类的RSS提要(RSS feed)生成器(FetchRSS)。
免费RSS 提要(RSS feed)阅读器的一些示例包括Feedly、The Old Reader、Feeder、Omea Reader for Windows 和Reeder for Mac。
使用网站监控工具
存在可以为您完成所有检查的工具。如果相关站点没有RSS 提要(RSS feed)，如果您不喜欢使用新闻聚合器，或者您想要跟踪的更改无法通过RSS 提要(RSS feed)获得，这些专用监视器会很有帮助。
可视化(Visualping)是一种工具的示例，该工具会在每次特定网页(web page)更改时向您发送电子邮件。如果您喜欢关注单个页面，并且不需要提醒所有站点的新内容，这将非常有用。它的工作原理是让您选择要监视更改的页面部分。
您甚至可以调整更改敏感度(change sensitivity)并让 ping 等待几秒钟，然后再检查更新。Visualping 免费用户每月仅限于 62 次免费支票。
Distill Web Monitor是一个Chrome 扩展程序(Chrome extension)，因此它完全在您的网络浏览器(web browser)中运行，以监控整个页面以及任何网页的任何部分的更改。它也适用于RSS提要。免费用户每月可获得 25 个网站监视器和多达 30 封电子邮件，但如果您为 Distill.io 计划付费，(pay for a Distill.io plan)则可以获得更多。
ChangeTower类似于其他监视站点更改的免费工具。它可以监视单个页面的更改或整个网站。
ChangeTower中包含许多非常简洁的功能，当任何内容被更改或添加时，当更改与您指定的关键字匹配时，当页面的一部分更改外观时，当HTML 代码(HTML code)被更改时，您会收到警报，等等。
您每天最多可以获得六张免费支票，最频繁的查询设置为 12 小时（您可以为更快的支票付费）。
关注任何社交媒体帐户
跟踪网站何时更改的另一种好方法是在其社交媒体平台上关注该公司。
大多数网站都有指向他们的Twitter、
Facebook、Instagram、Snapchat 的链接……你(Snapchat…you name)能想到的。尽可能多地关注他们的内容以获得最大的曝光率。(Follow)当他们用他们希望世界看到的东西更新他们的网站时，他们一定会在他们的社交媒体平台上发布。
某些社交媒体网站允许您订阅特定帐户以获取通知，以便在他们在其页面上发布时获得应用程序警报或优先视图。如果可以，请执行此操作，以确保您在他们的网站更改(site change)后真正看到该帖子。
How to Monitor When a Website Gets Updated
Knowing when a website uрdates lets you stay
on top of their new cоntent. Fortunately, there are several ways to do this
aside from manually checking on a whim whenever уou wonder whether the ѕite has
changed.
Depending on the site you’re monitoring for updates,
you can be alerted about anything — breaking news stories, brand-new products,
blog updates, new cars, updated software, etc. A website monitor can even be
helpful for knowing when a website goes offline.
Some websites have built-in monitoring tools
that you can use to stay updated with them when they release new content.
Others might not have any such capabilities, but there are still third-party
services you can utilize to monitor those pages for changes.
Use Their Email
Newsletter
It’s really common for websites to offer their
visitors an email newsletter. They’re almost always completely free and only
require your email address. Once subscribed, you’ll get an email each time the
website releases something new.
Sometimes, you’re able to customize the
newsletter to subscribe to only the type of content you want to get alerted
about. Other times, the site will selectively choose when and what to email
you, but that’s more common for sites that don’t release newsworthy information
frequently.
Tip: Not sure about the email provider you use? There are lots of options, including disposable email accounts and anonymous and private email services.
Subscribe to Their
RSS Feed
RSS feeds are published by some sites to let
visitors stay updated through feed reader programs. You can use a feed reader
online through a web app, on your computer via a download, or through your
mobile device with an RSS reader app.
To know if the website you’re wanting to check
for updates on is using RSS, look for an orange icon, likely somewhere in the
corner or on the top/bottom of the page near a search bar or around their
social media icons.
If you can’t find a button, most feed readers let you scan a website for RSS feeds and provide an easy way to subscribe to them. If the site doesn’t have an RSS feed but you want it to, try an RSS feed generator like FetchRSS.
Some examples of free RSS feed readers include Feedly, The Old Reader, Feeder, Omea Reader for Windows, and Reeder for Mac.
Use a Website
Monitoring Tool
Tools exist that can do all the checking for
you. These dedicated monitors are helpful if the site in question doesn’t have
an RSS feed, if you don’t like using news aggregators, or if the changes you
want to track aren’t available through an RSS feed.
Visualping is one example of a tool that will email you each time a particular web page changes. This is useful if you like to follow a single page and not necessary be alerted about all the site’s new content. It works by having you select which part of the page to monitor for changes.
You can even adjust the change sensitivity and have the ping wait several seconds before checking for updates. Visualping free users are limited to 62 free checks every month.
Distill Web Monitor is a Chrome extension, so it runs entirely in your web browser to monitor full pages for changes as well as any section of any web page. It works with RSS feeds, too. Free users get 25 website monitors and up to 30 emails per month, but more can be had if you pay for a Distill.io plan.
ChangeTower is similar to these other free tools that monitor sites for changes. It can monitor a single page for changes or the entire website.
Lots of really neat features are included in ChangeTower, letting you get alerted when any content is changed or added, when the changes match keywords you specify, when part of the page changes appearance, when the HTML code gets altered, and more.
You get up to six free checks every day, with the most frequent lookup set at 12 hours (you can pay for faster ones).
Follow Any Social
Media Accounts
Another good way to track when a website
changes is to follow the company on their social media platforms.
Most websites have links to their Twitter,
Facebook, Instagram, Snapchat…you name it. Follow as many as possible to get
the greatest exposure to their content. When they update their site with
something they want the world to see, they’ll be sure to post it on their
social media platforms.
Some social media sites let you subscribe to
particular accounts for notifications so that you’ll get an app alert or
priority view when they post on their pages. Do this, if you can, to make sure
you’ll actually see the post following their site change.
