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MNG to DOTM Converter

Turn MNG animations into DOTM — free and online

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Format Rescue

MNG has minimal software support today. Converting to DOTM ensures your content remains viewable.

Browser-Based Tool

Convert MNG to DOTM directly in your web browser. No desktop software, plugins, or downloads required.

Data Protection

Your MNG files are removed immediately after processing. Converted DOTM output is purged within 24 hours.

How to convert MNG to DOTM

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose dotm or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your dotm file right afterwards

About formats

MNG (Multiple-image Network Graphics) is an animation and multiple-image format designed as the animated counterpart to PNG, with its specification reaching version 1.0 on January 31, 2001. Developed by Glenn Randers-Pehrson and members of the PNG development community, MNG extends PNG's capabilities with support for frame-based animation sequences, slide shows, complex sprite overlays, and JNG (JPEG Network Graphics) frames for lossy compression of photographic content within the same container. An MNG file consists of a series of chunks (following PNG's chunk-based architecture): MHDR and MEND chunks bookend the datastream, with embedded PNG or JNG images as individual frames and control chunks (DEFI, FRAM, LOOP, ENDL, TERM, BACK, BASI, CLON, PAST, DISC, SHOW) directing playback timing, looping behavior, layer compositing, and memory management. The format supports both full-frame replacement and delta (difference) updates for efficient encoding of animations with static backgrounds, as well as object-based animation where sprites are defined once and repositioned across frames. One advantage is technical sophistication: MNG provides a level of animation control that GIF and APNG cannot match — frame-accurate timing, nested loops, conditional branches, interframe compression, and mixed lossy/lossless content within a single animation. The PNG-based foundation ensures lossless quality with full alpha transparency for each frame. MNG is supported by ImageMagick, GIMP, and various media players, though browser support was limited, which led to APNG's emergence as a simpler alternative for web animation.
Initial release: January 31, 2001
DOTM is a macro-enabled template format for Microsoft Word, introduced with Office 2007 as part of the Office Open XML family. DOTM combines the template functionality of DOTX — providing reusable styles, page layouts, boilerplate content, and formatting definitions — with the ability to embed VBA macro code that executes in documents created from the template. The format is a ZIP archive containing XML parts for styles, document defaults, and theme definitions, plus a vbaProject.bin stream for the VBA project. This combination enables organizations to distribute not just visual consistency but also functional automation: every document created from a DOTM template inherits both the formatting framework and programmatic capabilities. Common use cases include templates that auto-populate document fields from corporate directories, enforce naming conventions, generate tables of contents, insert dynamic headers with project metadata, or validate document structure before submission. One advantage is embedded workflow automation — a DOTM template can include initialization macros that configure the document environment, register custom ribbon commands, and connect to data sources the moment a new document is created from it. The distinct .dotm extension allows administrators to apply differentiated trust policies for macro-containing templates versus standard DOTX files. DOTM is supported exclusively in Microsoft Word desktop editions where VBA execution is available.
Developer: Microsoft
Initial release: January 30, 2007

Frequently Asked Questions

Why convert MNG to DOTM?

DOTM format makes MNG animation content accessible in document form — ideal for reports and presentations.

What opens DOTM files?

Open DOTM files using Microsoft Word or LibreOffice Writer.

Does conversion keep all MNG frames?

MNG content is carefully processed during conversion. The DOTM output preserves the visual quality of each frame.

Can I convert MNG to DOTM for free?

Yes — basic MNG to DOTM conversion is free. Premium tiers provide additional throughput and faster processing.

Does the converter support batch processing?

Batch conversion is supported. Upload several MNG files simultaneously and download each DOTM result.

Do I need to create an account?

No registration is needed for standard conversions. Upload your MNG file, convert, and download the DOTM result.