Frequently Asked Questions


Installation FAQs

Windows: Microsoft Windows1 10, 8, Windows 7, Windows Vista, or Windows XP; File size: 42 MB

Mac OS X: Mac OS X 10.6 or higher (Snow Leopard, Lion, Mountain Lion,Mavericks, Yosemite, El Capitan, or Mojave); File size: 61 MB


First, download the program by going to our Download Page and click on your operating system (Mac or Windows).

Chrome (Windows):

1. Click the "Keep" button.

This is the standard warning for all downloadable files.

2. Click on the Installer.

This will start the installation process.

3. Select your language.

Continue with the installation and enjoy!

Internet Explorer (Windows):

1. Click "Run".

This will start the installer.

2. Select your language.

Continue with the installation and enjoy!

Edge (Windows):

1. Click "Run".

This will start the installer.

2. Select your language.

Continue with the installation and enjoy!

Mac OS X:

1. Download the file.

From your browser's downloads
window double click the installer file
to start installation.

2. Follow installation instructions.

Follow the instructions to install Multi PDF Converter on your computer and you will be good to go!

 uninstall program

Windows 7, 8 or Vista Users:

  1. Click Start and choose Control Panel.
  2. Click Uninstall a program beneath Programs. Note: If you are not using the Category view, open Programs and Features.
  3. Click the Multi PDF Converter entry that is listed.
  4. Click Uninstall.
  5. Click Yes in the User Account Control dialog if it displays.

Windows 10 Users:

  1. Open the Start menu.
  2. Scroll down and click Settings on the left panel.
  3. Click System on the Settings menu.
  4. Select Apps & features from the left pane. A list of installed apps appears in the right pane.
  5. Select the Multi PDF Converter app and click "Uninstall".

Mac Users:

Simply drag Multi PDF Converter program out of the Applications folder into the trash.

Installation Errors

A common error you may encounter is a Java-related error and this happens when you are trying to download and install the program while you have the program already open on your desktop (this affects Windows only Users).

The simple fix for this is to either: 1) restart the computer, or 2) quit the program by opening Task Manager, select the program and "End Process", OR do the following:

  • Open the Control Panel
  • Click on System and Securities, then select System
  • In the left tab, click Advanced Systems Properties
  • Select Environment Variables
  • In the System Variables box below, click New
  • Use New Variable Name: _JAVA_OPTIONS and New Variable Value: -Xmx512M, then click OK

Errors During a Conversion

If you are getting error codes when converting files, try using a lower resolution setting and reduce the number of files you are trying to convert. This could be a memory issue. In addition, if you are using an older version of the program, click here to download the latest version.

Error During License Key Activation

If you are getting an error during the license key activation, try disabling your antivirus software or firewall to resolve this issue. Click here for instructions on how to do so. Our program has been Norton Approved.

Sorry, we do not have a mobile app available. We are working on something and if you'd like to beta test for us, please contact us.

Licensing & Purchasing

You may obtain a Multi PDF Converter key now from our web store. You will get your license key in less than 2 minutes!

We accept all major Credit Cards and Paypal.

When you subscribe to one of our plans, our payment processing partner FastSpring is the seller of record. For tax reporting purposes, their W-9 and VAT information are available below. Note: FastSpring is required to charge VAT Tax at the VAT rate of the buyer's country.

FastSpring's W-9

FastSpring and VAT Tax Collection

First, make sure you have downloaded the latest version of Multi PDF Converter from the download page. To activate the key and use the program, you need to be connected to the internet.

Visit our activation page for instructions.

The license key will activate one computer. The key cannot be used at the same time on multiple computers.

Here's an example. Let's say the software is activated with a valid license key on your laptop. And, you would like to use the same key to activate the software on your home desktop computer - the key won't activate your desktop computer. You will need separate keys. If you need multiple licenses, we do offer volume discounts

Yes, Multi PDF Converter can now be installed in server environments. Please contact us beforehand to generate a quote for the number of seats you require.

Please visit our education/government/non-profit program page for these special discounts. For volume discounts, please visit the volume discount page.

There is no need to reinstall or download anything else. Your existing installation can be registered by copying and pasting your license key into the registration form of the software.

License key activation instructions can be found here.

Please visit our refund policy page for information.

No. For your added security, we do not handle credit card information over the phone, email, or fax.

You can pay directly via our secure online web store.

You will be shown your license key immediately after the checkout. We also send an email within seconds confirming the transaction, which includes the license key for your records and license key activation instructions.

Certainly, please download the demo from our download page. The demo is limited by the placement of a SAMPLE mark on the documents and a maximum of 2 files can be processed at once.

If you lost your license key, contact our support desk with the name and the email that was used for the purchase.

The license key will activate one computer. The key cannot be used at the same time on multiple computers.

Here's an example. Let's say the software is activated with a valid license key on your laptop. And, you would like to use the same key to activate the software on your home desktop computer - the key won't activate your desktop computer. You will need separate keys. If you need multiple licenses, we do offer volume discounts

We do offer our license owners 3 free license key resets in order to move keys around, for situations shown above. Visit the reset page.

In the example above, you can reset the key so that the home desktop computer can be activated, while the laptop will go into limited/demo mode. If you need to have both laptop and desktop fully activated, you will need to purchase one additional key.

Your backup CD will ship within 24 hours of your order. Please allow 7-10 business days for delivery. All domestic and international deliveries will be handled by the US Postal Service.

Software-Related FAQs

Three words: Security, Speed, and Size! With online services, you need to upload all your files to a unsecure server (or cloud), which at times may not have the necessary security features in place to protect confidential PDF or JPG/JPEG documents.

With a desktop application such as Multi PDF Converter, every part of the conversion is done right on your computer with no file size restrictions or security issues. Since you do not require an internet connection, the conversion process will be much faster than an online PDF/JPG file service.

The following settings apply only to PDF to JPG/JPEG conversions:

Low - 75dpi - For regular PDF images
Medium (default) - 150dpi - For PDF with medium quality illustrations
High - 300dpi - Rich, professional illustrations, high quality JPG images (long process times)

We are currently working on a desktop program that will convert PDF to Tiff or Tiff back to PDF. If you are interested, please contact us. If you have other requests, please give us a shout!

This is a limitation of our demo version. To permanently remove the SAMPLE mark and be able to convert more than 2 files at once, you will need to purchase a license key from our web store.

In some cases, a user will activate the license and inadvertently try to convert a file that has the SAMPLE mark on it from previous runs. Make sure you use the original files, ones without the SAMPLE mark after you have activated the license key.

File size limitation is hard to predict. The program's processing speed and capability depend on many variables. Depending on file sizes, quantity of files and complexity, your computer's available RAM, processing speed, and operating system, the processing times will vary. Try to close out any unnecessary applications when running the program - this may help speed up processing times.

We have a desktop program just for this - Batch PDF Merger, which merges multiple PDF files into one large PDF file.