PPTM to AVIF Converter

Convert PPTM slides to AVIF images online free

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Ultra-Efficient Compression

AVIF produces dramatically smaller files than traditional image formats while preserving stunning visual quality — your slides load faster everywhere.

Next-Gen Visual Fidelity

With HDR and wide color gamut support, AVIF captures the full richness of your PPTM slide graphics in ways older formats cannot.

Macro-Free and Secure

Converting PPTM to AVIF eliminates all embedded VBA macros. The output is a pure image file — safe to share without any security concerns.

How to convert PPTM to AVIF

1

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

2

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

3

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

About formats

PPTM is a macro-enabled presentation format for Microsoft PowerPoint, introduced with Office 2007 as part of the Office Open XML family. Structurally identical to PPTX — a ZIP archive containing XML parts for slides, layouts, themes, and media — PPTM adds the ability to store and execute VBA (Visual Basic for Applications) macro code within the presentation. The deliberate separation of macro-enabled (.pptm) and macro-free (.pptx) extensions was a security design decision: users and administrators can identify macro-containing files by extension alone, and security policies can block or warn about macro-enabled formats while freely allowing standard PPTX files. PPTM files store VBA projects in a dedicated binary stream (vbaProject.bin) within the ZIP package, alongside the same XML slide content used by PPTX. Macros in PowerPoint presentations power automated slide generation, custom ribbon interfaces, interactive quizzes, data-driven content updates, and integration with external data sources. One advantage is workflow automation — PPTM enables repeatable processes like generating monthly report decks from database queries or updating financial charts across dozens of slides with a single button click. The format preserves full compatibility with the OOXML specification, meaning all standard PowerPoint features — transitions, animations, embedded media, SmartArt — work identically to PPTX. PPTM is supported by Microsoft PowerPoint on Windows and macOS, with macro execution limited to the desktop application.
Developer: Microsoft
Initial release: January 30, 2007
AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media and specified in February 2019. The format leverages the intra-frame coding tools of AV1 — a royalty-free video codec backed by Google, Apple, Microsoft, Amazon, Netflix, and other major technology companies — to compress still images with substantially higher efficiency than JPEG, PNG, or even WebP. AVIF stores images in the HEIF (High Efficiency Image File Format) container, supporting both lossy and lossless compression, HDR (high dynamic range) with wide color gamuts up to 12-bit depth, alpha transparency, and animated sequences. At equivalent visual quality, AVIF files are typically 30-50% smaller than WebP and 50-70% smaller than JPEG, representing the largest compression improvement in mainstream image formats in over a decade. One advantage is exceptional compression efficiency — AVIF delivers visually indistinguishable images at dramatically lower file sizes, directly reducing bandwidth consumption and improving page load times for web content. The royalty-free licensing model provides another key strength: unlike HEIC/HEIF which relies on patent-encumbered HEVC, AVIF's AV1 foundation is free for anyone to implement without licensing fees. Browser support has reached broad adoption, with Chrome, Firefox, Safari, and Edge all rendering AVIF natively. The format is rapidly gaining adoption for web images where quality-to-size ratio is paramount.
Initial release: February 8, 2019

Frequently Asked Questions

Why convert PPTM to AVIF?

AVIF compresses images far more efficiently than JPEG — your slide visuals look sharp at a fraction of the file size, perfect for web galleries or portfolios.

What opens AVIF files?

Chrome, Firefox, Safari, and Edge all display AVIF natively. On desktop, modern image viewers and editors increasingly support the format.

How does AVIF compare to JPEG?

AVIF typically achieves the same visual quality at roughly one-tenth the file size. It also supports HDR, wide color gamut, and transparency.

Does AVIF support transparency?

Yes — AVIF handles alpha channels natively. If your PPTM slides use transparent elements, that data can be preserved in the output.

Are macros stripped during conversion?

Absolutely. AVIF stores only image data — no macros, scripts, or executable content from the original PPTM can exist in the output.

Is PPTM to AVIF conversion free?

Convertio offers this conversion without cost. Premium plans provide batch processing and higher-resolution output for demanding projects.