Add your WMF file
Drop one or more .wmf files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
WMF to APNG
Converting a .wmf drawing to .apng interprets the original drawing commands and outputs a portable image. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop WMF files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Windows Metafile to Animated PNG
Converting a .wmf drawing to .apng interprets the original drawing commands and outputs a portable image. Windows Metafile, seen as .wmf, is the original 16-bit vector format of Microsoft Windows — a replayable log of GDI drawing commands dating back to the era of Windows 3.0. Enormous amounts of 1990s clip art, including the classic Office galleries, shipped in this format.
An .apng file is an animated extension of PNG: full 24-bit color with 8-bit alpha per frame, in a stream that plain PNG decoders read as a normal still image. It delivers the smooth, semi-transparent animation that GIF's 256-color palette never could, and it is the format behind many messaging-app sticker packs. For this route the practical draw is 16.7 million colors and real alpha per frame, versus GIF's 256 and binary transparency and backward compatible: old decoders still render the first frame — balanced against files grow quickly for long or high-motion animations, where animated WebP/AVIF or video compress far better, which is worth knowing before you commit a large batch.
Why convert WMF to APNG?
The practical trigger for this conversion is usually a mismatch: with .wmf, the 16-bit coordinate space rules out precise or large drawings. Switching to .apng buys you 16.7 million colors and real alpha per frame, versus GIF's 256 and binary transparency, which is why it is the better fit for animated stickers (Apple's iMessage and LINE both build on APNG). Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
WMF vs APNG at a glance
| Aspect | Windows Metafile (.wmf) | Animated PNG (.apng) |
|---|---|---|
| Format type | Vector — resolution-independent geometry instead of pixels | Lossless — every pixel or sample is preserved exactly |
| How it stores data | 16-bit records encode GDI calls, capping coordinates at signed 16-bit values and limiting drawing precision | adds three chunk types to PNG: acTL (animation control), fcTL (frame control), and fdAT (frame data) |
| Strongest at | opening legacy clip-art libraries from the 1990s | animated stickers (Apple's iMessage and LINE both build on APNG) |
| Weak spot | the 16-bit coordinate space rules out precise or large drawings | files grow quickly for long or high-motion animations, where animated WebP/AVIF or video compress far better |
Pick APNG as the output
Select .apng in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if APNG is selectable, the route is real and validated.
Convert on your device
Press Convert. The drawing records are interpreted locally and rendered to a validated image without any cloud converter.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid APNG file. Outputs keep the original filename with the .apng extension.
WMF to APNG questions, answered
Will converting WMF to APNG lose quality?
The conversion is exact at the resolution you rasterize to — vectors have no pixels until they are drawn. Pick dimensions that match the largest size you will display, because unlike .wmf, a .apng raster cannot be enlarged cleanly afterwards.
Is it private to convert WMF files here?
Yes — the .wmf file is processed inside your browser tab and never uploaded. The drawing records are interpreted locally and rendered to a validated image without any cloud converter. Close the tab and the file is gone from memory.
Where will the APNG file work?
Chrome 59+, Firefox 3+, Safari 8+, and Edge 79+ all animate .apng natively, so browser coverage is complete. Desktop support is patchier — most image editors open only the first frame — and social platforms frequently flatten or re-encode uploads, so test the target platform before committing to it.
Will the APNG file be bigger or smaller than my WMF?
It depends on the content: adds three chunk types to PNG: acTL (animation control), fcTL (frame control), and fdAT (frame data). Convert one representative file first and compare before batch-processing a large set.