To add a Twitter card, add a specific meta tag in the
part of the web page HTML and verify it using the X Post Inspector tool. 1. Add the following meta tag: specify the card type (such as summary_large_image), site account, title, description, image URL and author account. 2. Ensure that the image size meets the requirements (recommended 1200x600px), that all URLs are absolute paths, and that the page is publicly accessible. 3. Enter the URL using X Post Inspector, check the preview effect, and trigger a re-crawl to refresh the cache. 4. Follow tooltips to fix errors, such as missing tags, too small images, or crawling issues. As long as the tag is set correctly and verified, the Twitter card will be displayed normally.A Twitter card is a way to attach rich media and metadata to links shared on Twitter, making them more engaging and informative when posted. When you share a URL on Twitter, the platform reads specific meta tags in the page's HTML to generate a preview that includes things like a title, description, image, and even video or app details—this preview is the Twitter card.

There are several types of Twitter cards, including:
- Summary Card : Basic card with title, description, and a thumbnail.
- Summary Card with Large Image : Same as above but with a larger image.
- App Card : Promotes a mobile app with direct download links.
- Player Card : Embeds video or audio content that plays directly in the tweet.
How to Add a Twitter Card to Your Website
To enable a Twitter card, you need to add Twitter-specific meta tags in the section of your webpage. Here's an example of a Summary Card with Large Image:

<meta name="twitter:card" content="summary_large_image"> <meta name="twitter:site" content="@your_twitter_handle"> <meta name="twitter:title" content="Page Title"> <meta name="twitter:description" content="A short description of the page."> <meta name="twitter:image" content="https://example.com/image.jpg"> <meta name="twitter:creator" content="@author_handle">
Make sure:
- The image meets size requirements (ideally 1200x600px for large image cards).
- All URLs are absolute (not relative).
- The
twitter:site
tag uses the correct Twitter handle for the site.
How to Validate a Twitter Card
After adding the tags, you need to validate the card to ensure Twitter can read and render it properly.

Use the Twitter Card Validator Tool
- Go to the Twitter Card Validator (Note: This tool is now part of the X Developer Platform).
- Enter the URL of the page you want to test.
- Click Preview .
The tool will:
- Fetch the page.
- Parse the meta tags.
- Show a visual preview of how the card will appear in a tweet.
- Highlight any errors (eg, missing tags, image too small, crawl issues).
?? Note : If you recently updated your site, Twitter may cache the old version. Use the validator to force a refresh.
Common Issues & Fixes
-
Card not appearing?
- Double-check meta tag syntax.
- Ensure the page is publicly accessible (no login walls or robots.txt blocking).
- Wait a few minutes after deploying changes.
-
Image not loading?
- Confirm the image URL is absolute and publicly reachable.
- Check file size (under 5MB) and dimensions.
-
Changes not reflecting?
- Use the validator tool to re-scrape the URL. Twitter caches card data, so manual refresh is needed.
Alternative: Use the X Post Inspector
Twitter has largely migrated to the X Post Inspector tool (formerly Card Validator). You can:
- Enter a URL.
- Inspect how X (formerly Twitter) sees your page.
- Trigger a re-crawl.
- View detected metadata and any warnings.
This is now the recommended method for debugging.
Basically, just add the right meta tags, make sure your content is public, and use the X Post Inspector to test and refresh. It's not complicated, but small mistakes can break the card—so always validate.
The above is the detailed content of What is a Twitter card and how to validate it. For more information, please follow other related articles on the PHP Chinese website!

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Verifying an Alipay account as a foreigner is now more convenient, with only a passport and a Chinese mobile phone number. Specific steps: 1. Prepare a valid passport, Chinese mobile number and log in to Alipay; 2. Open the application and enter the "My" page to find the real-name authentication option; 3. Select the overseas user entrance, fill in the passport information and upload photos; 4. Follow the instructions to complete the self-port verification; 5. Wait for a few seconds to confirm the result. Notes include ensuring clear photos, good lighting, and some features such as Huabei may still be unavailable. If you encounter any problems, you can seek support through the Help Center or customer service.

To permanently delete an Alipay account, you must contact customer service and meet specific conditions. Users need to unbind their bank card, cancel automatic deductions, settle their debts, and close their associated investment products first, and then contact Alipay customer service by calling 95188, using the App Help Center or submitting online requests, but the account may not be deleted immediately due to transaction disputes, unsettled debts, legal restrictions or recent modifications. Even if it is successfully closed, some data will still be retained in accordance with Chinese financial regulations.

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Yes, you can permanently delete your WeChat account, but the process is relatively complicated, and you need to meet multiple conditions and go through a 60-day cooling-off period. 1. Before deletion, make sure that the account is not bound to a mini program, third-party application or service, and there are no group chats and public accounts under management. Clear payment records and unbind the bank card; 2. Back up chat records in advance, unbind the bank card, exit or transfer administrator rights, and cancel follow the official accounts and mini programs that are no longer needed; 3. The operation path is "Me">Settings>Account and Security>WeChat ID>Lock the account. After submitting the application, you must complete the identity verification and enter the 60-day waiting period; 4. If you do not log in during the waiting period, the account will be permanently deleted, the information cannot be restored, and the WeChat account cannot be re-registered, but messages saved on other people's devices are

Yes,Alipayhastransactionlimitsforforeignusers.Unverifiedaccountshaveadailylimitofaround1,000RMBandamonthlycapof5,000RMBwithnotransferorsavingsfeatures.Afterbasicverificationwithapassport,dailylimitsincreasetoupto5,000RMBandmonthlylimitsreach20,000–50

AlipayHuabei (Ant Huabei) is a "enjoy first and pay later" service provided by Alipay. Users can use this function to consume on online platforms such as Taobao and Tmall and offline merchants, and choose to repay the full amount at the end of the month or pay in installments. The quota is dynamically evaluated by the system based on user's transaction records, account information and the use of Alibaba's ecological services. 1. When using it, just choose Huabei as the payment method; 2. There is a monthly billing cycle and enjoy an interest-free period of about 40 days; 3. You can choose the minimum repayment but interest will be generated; 4. Large-scale consumption can be divided into 3, 6, 12 periods or even longer periods. Common uses include shopping, living expenses, takeaway ordering, supermarket consumption, travel reservations and tuition payments. It is recommended to set up automatic management

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Yes, but there are restrictions. ① You can log in to the same account on both iPhone and Android phones, but logging in to the latest device will cause the earliest session to be offline; ② You can log in at the same time on the mobile phone and the computer desktop, but the functions are not synchronized; ③ Although using third-party tools or dual-app functions can enable logging in between two mobile phones, it is unofficially supported and may violate regulations; ④ Alternative solutions include using web version/desktop version to match the main phone, or transferring chat records through cloud backup and file tools. Some Android machines can also use "dual applications" to run two account instances.
