Convert APNG to WMV Online

Convert APNG to WMV Online

An animated PNG stores every frame losslessly, so even a short loop can run to tens of megabytes — and Windows Media Player, older PowerPoint decks, and most legacy Windows apps will not open an .apng file at all. Converting to WMV (Windows Media Video) shrinks the animation and turns it into a clip those Windows-native tools play without extra plug-ins. One honest trade-off: WMV has no alpha channel, so any APNG transparency is flattened onto a solid Background Color (black by default, switchable to white or any color). If your target is the modern web, social, or a Mac, MP4 is the more universal pick — see APNG to MP4.

How to Convert APNG to WMV

1. Upload Your APNG File: Drag and drop your .apng onto the page or click "Upload" to choose it. You can add several files at once.
2. Set Quality Preset and Resolution: Leave Quality Preset on "Very High (Recommended)" for a near-original look, or step down to make the WMV smaller. Under Video resolution, keep the original size or pick a preset (1080p, 720p) to shrink the frame.
3. Pick a Background Color: Because WMV cannot store transparency, set Background Color to match where the clip will sit — Black is the default; White is the usual choice for a slide or light page.
4. Convert and Download: Click "Convert" and download your WMV. No sign-up, no watermark. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours.

APNG vs WMV — What Changes in the Conversion

Frequently Asked Questions

Will I lose quality converting APNG to WMV?

APNG is lossless and the Windows Media Video codec is lossy, so technically yes — but at the "Very High" Quality Preset the difference is hard to spot on normal footage. It shows most on hard-edged graphics, flat single-color areas, and sharp text, which lossy video can soften. If you need to keep crisp edges and transparency, stay on APNG or convert to APNG to WebP instead.

What happens to the transparent background?

WMV has no alpha channel, so transparency is flattened onto one solid color during conversion. By default that color is black; set Background Color to white (or any color) so the filled background matches the slide or page where the video will play. There is no way to keep true transparency inside a WMV file.

Will this WMV play in PowerPoint?

It plays in older Windows-based PowerPoint, which is the classic reason to use WMV. Be aware Microsoft now lists WMV support as limited and deprecated in PowerPoint version 2505 and newer (inserted WMV files get converted to MPEG-4), and WMV is not supported in PowerPoint for macOS at all. If your deck will open on a Mac or a current Microsoft 365 build, APNG to MP4 is the safer choice — MP4 with H.264 is the format Microsoft recommends.

Why does my WMV not loop like the APNG did?

APNG carries a loop flag inside the file; WMV does not. The clip plays once unless the player is told to repeat it. In Windows Media Player turn on "Repeat" (Ctrl+T); on a web page, add the loop attribute (usually with autoplay muted) to the <video> tag.

How much smaller will the WMV be than the APNG?

It depends on the content, but the reduction is usually large — lossless APNG stores full frame data, while WMV only encodes what changes between frames. In our testing, a 1080p 3-second APNG loop of about 9 MB converted to a roughly 700 KB WMV at the default quality. Lowering the resolution or Quality Preset shrinks it further.

Are my files private during conversion?

Yes. Files are uploaded over an encrypted (TLS) connection, converted on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark, and your files are never shared or made public.