POTM to HEIF Converter

Export POTM slides to high-efficiency HEIF images online

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Next-Gen Format

HEIF represents the future of image storage — dramatically smaller files than JPEG with equal or better visual quality from your POTM slides.

Secure Workflow

Uploaded POTM templates are removed from servers after processing. HEIF output files are automatically deleted within 24 hours.

No Software Needed

Convert POTM to HEIF entirely in your web browser. No codecs, plugins, or desktop applications required on your machine.

How to convert POTM to HEIF

1

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

2

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

3

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

About formats

POTM (PowerPoint Template with Macros) is a macro-enabled template format for Microsoft PowerPoint, introduced with Office 2007 as part of the Office Open XML family. POTM combines the template functionality of POTX — providing reusable slide masters, layouts, themes, and design foundations — with the ability to embed VBA (Visual Basic for Applications) macro code that executes in presentations created from the template. The format is a ZIP archive containing the standard XML parts for slide masters, layouts, and themes, plus a vbaProject.bin stream housing the VBA project. This combination enables organizations to distribute not just visual consistency but also functional automation: every presentation created from a POTM template inherits both the design system and the programmatic capabilities built into it. Common use cases include templates that automatically populate slides with data from corporate systems, enforce content approval workflows, insert standardized disclaimer slides, or provide custom ribbon tabs with organization-specific tools. One advantage is embedded workflow automation — a POTM template can include initialization macros that configure the presentation environment, add custom menu options, and connect to external data sources the moment a new presentation is created from it. The distinct .potm extension serves a security purpose as well, enabling administrators to apply differentiated trust policies for macro-containing templates versus standard POTX files. POTM is supported exclusively in Microsoft PowerPoint desktop editions where VBA execution is available.
Developer: Microsoft
Initial release: January 30, 2007
HEIF (High Efficiency Image File Format) is a container format for images and image sequences standardized by the Moving Picture Experts Group as ISO/IEC 23008-12, first published in 2015. HEIF is built on the ISO Base Media File Format (ISOBMFF, the same container used for MP4 video), providing a flexible structure that can hold single images, image collections, image sequences (like animations or bursts), and derived images with non-destructive editing operations. The container is codec-agnostic — while the most common implementation pairs HEIF with HEVC/H.265 compression (branded as HEIC by Apple), the standard also accommodates AV1 compression (creating the AVIF variant), H.266/VVC, and other future codecs. HEIF supports features that JPEG lacks: 10-bit and 12-bit color depth, wide color gamuts (Display P3, BT.2020), lossless compression, alpha transparency, depth maps, thumbnail images, and Exif/XMP metadata — all within a single file. Auxiliary image items can store computational photography data like depth maps, HDR gain maps, and semantic segmentation masks. One advantage is the format's future-proof architecture: by separating the container from the codec, HEIF can adopt newer, more efficient compression technologies without changing the file structure, metadata handling, or application-level APIs. The substantial compression improvement over JPEG is another core strength — HEVC-based HEIF typically achieves 40-50% file size reduction compared to JPEG at the same visual quality, beneficial for storage and bandwidth. HEIF is supported by Apple's ecosystem (iOS, macOS), Windows 10/11, Android 10+, GIMP, ImageMagick, and Adobe products.
Initial release: 2015

Frequently Asked Questions

Why convert POTM to HEIF?

HEIF is a modern image container developed by MPEG that offers dramatically better compression than JPEG — ideal for efficient storage of slide visuals.

What software supports HEIF?

Apple Photos, Windows Photos (with HEIF extension), GIMP 2.10+, Adobe Lightroom, and Affinity Photo all open HEIF files natively.

How does HEIF differ from HEIC?

HEIF is the container standard; HEIC is the specific variant that uses HEVC compression. Both terms often refer to the same format in practice.

Does HEIF strip POTM macros?

Entirely. HEIF stores image pixel data and metadata — no macros, VBA code, or template structure from the original POTM is carried over.

Does HEIF support image sequences?

Yes — the HEIF container can store multiple related images, image sequences, and depth maps within a single file.

Is this conversion free?

Convertio handles POTM to HEIF conversions for free. Upgraded plans offer increased limits for larger files and batch processing.