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- Foxit Knowledge BaseSecurity & Compliance
How to get rid of the security warning "Foxit PDF Editor/Reader has been opened by the following app without an valid signature. This may indicate a security issue."
When opening Foxit PDF Editor/Reader from applications without valid digital signatures, you will be prompted with pop-up security warning messages to ask you to allow Foxit PDF Editor/Reader to continue opening PDF files from applications without valid signatures included.
Updated Oct 8, 2025View source - Foxit Knowledge BaseSecurity & Compliance
How to get rid of the security warning "Foxit Reader/PhantomPDF has been opened by the following app without an valid signature. This may indicate a security issue."
After version 8, when open Foxit PhantomPDF from applications without valid digital signatures, you will be prompted with pop-up security warning messages to ask you to allow Foxit PhantomPDF to continue opening PDF files from applications without valid signatures included.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to get the high OCR recognition rate while scanning?
To get the highest possible recognition rate, make sure you select the desired language within the list provided when selecting the OCR Engine box and also set the Resolution at 300 DPI or higher. For example, if the PDF you want to recognize includes French, you should choose French as your OCR engine language.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to have some check boxes both checked/unchecked?
To make some check boxes in the same status(checked or unchecked),you have to make those check boxes have the same check box name and export value under the General tab and Options tab in Check Box Properties dialog boxes for all of those check boxes. To open Check Box Properties window, please click on Form tab in Foxit PDF Editor,choose Check Box tool, double click on a check box in the PDF file to bring up Check Box Properties window that belongs to the check box you have clicked.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to have some radio buttons both checked/unchecked?
To make some radio buttons in the same status(checked or unchecked),you have to make all of them have the same radio button name and export value and check options Radio buttons with the same name and value are selected in unison under Options tab in Radio button Properties dialog boxes for all of those radio buttons. To open Radio button Properties window, please click on Form tab in Foxit PDF Editor,choose Radio button, double click on a radio button in PDF file to bring up Radio Button Proper
Updated Oct 8, 2025View source - Foxit Knowledge BaseAccount & Licensing
How to hide Signer ID?
Under the signature, there's a partial value of the long random ID (unique for each signer) and it is called Signer ID. It is a unique ID for each signer and can be presented to prove a unique identity being maintained in case of legal issue.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to hide navigation panels permanently
Since version 8.0 of Foxit PhantomPDF/Foxit Reader ( it is rebranded into Foxit PDF Editor/Foxit PDF Reader), you are able to open all PDF files with navigation panels hidden by doing as follows:
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to highlight different colors on the highlighted text
Sometimes, you may need to highlight different colors for part of the content again on the already-highlighted text, such as the effect of the screenshot below.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to import data from an Excel sheet file to a PDF form file?
Foxit PDF Editor/Reader does not directly support the import of data from an Excel file. However, you can choose to save as the Excel file in the CSV format, which is supported by our program, before you attempt to import the data into a PDF format file. Please note that the data needs to be in a specific format to be correctly imported into the PDF form. Each column in the sheet must correspond to a form field in the PDF. You may refer to this article to understand the supported data format.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to import importing data from CSV sheet file to PDF form file?
Please Open PDF form file in Foxit PDF Editor or Foxit PDF Reader,choose Form tab > Import > navigate to where the desired CSV format file is, select it, and press “Open”. You will be prompted that the form data has been imported successfully.
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to import templates downloaded from docusign to eSign
Foxit eSign Business subscription plan supports importing templates (JSON files) downloaded from DocuSign to eSign. However, the process can be quite intricate, so please follow the instructions outlined below:
Updated Oct 8, 2025View source - Foxit Knowledge BaseHow-to
How to improve the quality of exported images?
Foxit PhantomPDF enables you to export all images embedded in PDFs or export PDF pages as separate images. If you have a quality requirement on images, you need to set up image resolution before exporting.
Updated Oct 8, 2025View source