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Trusted by employees at these brands

Employees of some of the world's most well-known brands rely on Zamzar to convert their files safely and efficiently, ensuring they have the formats they need for the job at hand. From global corporations and media companies, to respected educational establishments and newspaper publications, employees of these organisations trust Zamzar to provide the accurate and reliable conversion service they need.

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Zamzar has converted over 510 million files since 2006

For every 10,000 files converted on Zamzar, we'll plant a tree. By using Zamzar you are helping to make a difference to our planet

We're committed to regular charitable giving. Each month we donate at least 2% of our company profits to different charities

From your personal desktop to your business files, we've got you covered

We offer a range of tools, to help you convert your files in the most convenient way for you. As well as our online file conversion service, we also offer a desktop app for file conversions straight from your desktop, and an API for automated file conversions for developers. Which tool you use is up to you!

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Convert over 150 different file formats

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One simple API to convert files

100s of formats for you to choose from

Documents, videos, audios, images & more...

Why choose Zamzar?

With Zamzar, file conversions are easy, reliable and convenient, so you can quickly convert your documents, images, videos, and more, to the formats you need. With faster downloads of converted files, and friendly and helpful support when you need it, you'll have everything you need to work with your files.

It couldn

Ease of Use

It couldn't be simpler to convert a file with Zamzar. Add your file, choose what you want to convert it to and click convert! It really is as easy as that!

Zamzar is used across the world because we support so many different languages and ensure the experience remains consistent for everyone who uses our tool.

Available In Many Languages

Zamzar is used across the world because we support so many different languages and ensure the experience remains consistent for everyone who uses our tool.

At Zamzar, we want you to have the best possible experience when converting your files, which is why we are completely ad-free.


At Zamzar, we want you to have the best possible experience when converting your files, which is why we are completely ad-free.

Examples of just some of the new conversion types we

New Conversion Types

Examples of just some of the new conversion types we've added lately include converting a scanned PDF to TXT and converting a GIF to an MP4!

Tools to suit your file conversion and file compression needs

You'll find all the conversion and compression tools you need, all in one place, at Zamzar. With over 1100 file-conversion types supported, whether you need to convert videos, audio, documents or images, you'll easily find what you need and soon have your files in the formats and sizing that work for you.

PPTX Document Format

PPTX Converter

The PPTX format was developed by Microsoft and has been the default format for PowerPoint files since 2006. Along with similar updates for other Microsoft Office formats, it was designed to replace the older PPT format. The additional X at the end represents the open XML format that makes it easier for users to share and view Microsoft Office files in other programs.

Microsoft PowerPoint is used mostly for creating and delivering presentations, which can include text, graphics, animations, embedded video content and interactive elements. It is also commonly used by organisations and students to create reports, which are usually converted into PDF before sharing or publishing. As well as opening in PowerPoint itself, PPTX files will also open in Google Slides, Apple Keynote and LibreOffice. You can also use PowerPoint to save files into the older PPT format, as well as to save PowerPoint slide shows into PPS or PPSX format.

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DOCX Document Format

DOCX Converter

The DOCX format has been the standard format for Microsoft Word documents since 2007, replacing DOC. Microsoft Word is used widely in homes, workplaces and educational settings to create formatted text documents like reports, letters or resumes. As well as text, DOCX files can include pictures, tables, charts and embedded media, or can be an editable template.

The DOCX format has some advantages over DOC, including typically smaller file sizes and better security. DOCX is an Office Open XML file, making it easier to open DOCX files in other programs like LibreOffice, Google Docs or Apple Pages, with fewer compatibility issues. Word is part of Microsoft Office’s paid software application and is also available with an Office 365 online subscription. Microsoft Office was designed for Windows, but you can install Office apps on other operating systems. Microsoft also has a basic free ‘Word for the web’ programme for online Microsoft account holders.

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How to convert a PPTX to a DOCX file?

  1. 1. Choose the PPTX file that you want to convert.
  2. 2. Select DOCX as the the format you want to convert your PPTX file to.
  3. 3. Click "Convert" to convert your PPTX file.

Convert from PPTX

Using Zamzar, it is possible to convert PPTX files to a variety of other formats:


Frequently asked questions

If you’ve got any questions about converting or compressing files with Zamzar, we’re happy to help! We’ve answered a few commonly-asked questions below, to get you started, and you can find out more information about file conversion and compression with Zamzar, in our Help centre.

File conversion software and websites like Zamzar are two simple ways to convert PPTX to DOCX. Simply upload your PowerPoint file to the free tool on Zamzar’s website, click to convert it into DOCX format, and then download a Word version of your file, with the content and layout the same.

If you have Microsoft Office, you can also open your PowerPoint file and use the ‘Export’ tool to turn the content into handouts in Word, or into an RTF file which will open in Word. You could also copy content from the slides and paste it into a Word document.

Zamzar or other online file conversion tools are an easy way to convert a PPTX file directly into a Word document with the same dimensions. Upload your PPTX file to the free tool on Zamzar’s website, select to convert it into either DOC or DOCX, and then download the new file when it’s ready. You can also convert more than one file at once.

If you just want to keep the contents of the file and can access Microsoft Office, you can also use the ‘Export’ or copy and paste tools to transfer the content into a Word document.

PowerPoint will open a PPTX file, but you can also open it using free, open-source software like LibreOffice. It’s also simple to convert PPTX files with file conversion software or free online tools like Zamzar. To convert your file with Zamzar, just upload the PPTX file to the tool at www.zamzar.com, select the format to convert it into (e.g. PDF or DOC), and then download the new file.

To open a PPTX in Word, you would need to convert the file between the two Microsoft Office formats first. There are several different ways to do this. If you want to keep the same formatting and dimensions, then Zamzar is a great way to convert your files. Simply upload the PPTX file to the free tool on Zamzar’s website, select to convert it into DOC or DOCX format, and then download the new file, which you can then open in Word.

It’s also possible to use PowerPoint to export the contents, but not layout, of a PPTX file – you can export to either a Word document handout or an RTF file, and can then open the exported file in Word.

A quick way to convert PowerPoint to Word online is to use a free conversion tool like Zamzar. Just upload the PowerPoint file to Zamzar’s website, select DOCX or DOC format and then ‘Convert Now’. Your new file will then be ready to download in real time without you installing any new software to your device.

If you have Office 365 access, you can also use the ‘Export’ function in an open PowerPoint to save the contents of the file as a Word or RTF document. However, unlike with Zamzar, this will not maintain the dimensions of your original presentation.