TC pdf error, some data has already been output cant send pdf file


PDF files are mainly used for professional reasons. For example, you may need to send a PDF file to a printer or publishing company. PDF files are also commonly used for submitting resumes or other forms that need to be fillable.

There are a number of ways that you can create a PDF file, but one of the most popular methods is to use the tcpdf error some data has already been output cant send pdf file. This method allows you to take an existing document or file and convert it into a PDF. However, sometimes when you try to use this method, you may get an error message that says “some data has already been output, can’t send PDF file.”

This error usually occurs because your WordPress site is configured to display PHP errors and warnings on screen. When this setting is enabled, any data that is outputted by PHP will be displayed on the screen instead of being sent to the browser. This includes any data that is normally sent as part of a PDF file.

To fix this problem, you will need to edit your WordPress configuration file and turn off the display_errors setting. You can do this by adding the following line of code to your wp-config.php file:

ini_set(‘display_errors’, ‘off’);

Once you have added this line of code and saved the wp-config.php file, you should be able to successfully create PDF files from your WordPress site without any errors.

What is tcpdf error?

“Tcpdf error some data has already been output to browser cant send pdf file” is an error that usually occurs when you try to generate a pdf file using the tcpdf library. This can be caused by anything that outputs data to the browser before the pdf is created, such as echo statements or HTML code.

How to fix tcpdf error?

Tcpdf error some data has already been output to browser cant send pdf file is caused by an error in the php code. This can be due to a lot of reasons like bad coding, syntax errors or even conflicts with other code in the same file. To fix this error, it is advisable to take a backup of the file and then try to repair it.


In conclusion, it is not recommended to try and send a PDF file using the tcpdf library if there is any data at all that has been output to the browser. Doing so will likely result in an error.

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