Add your APNG file
Drop one or more .apng 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.
Converting a .apng image to .avi re-encodes the pixels for a different balance of size, quality, and support. Free, private, and validated — the file never leaves your browser.
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.Converting a .apng image to .avi re-encodes the pixels for a different balance of size, quality, and support. 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.
An .avi file is Microsoft's Audio Video Interleave container, one of the oldest video wrappers still in circulation. It stores video and audio in alternating chunks inside a RIFF structure, and the extension remains common on older camcorder captures and DivX-era rips. For this route the practical draw is simple, thoroughly reverse-engineered structure and virtually every desktop player and converter opens it — balanced against no streaming support of any kind, which is worth knowing before you commit a large batch.
The practical trigger for this conversion is usually a mismatch: with .apng, files grow quickly for long or high-motion animations, where animated WebP/AVIF or video compress far better. Switching to .avi buys you simple, thoroughly reverse-engineered structure, which is why it is the better fit for playing back footage digitized from DV and Hi8 tapes. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
| Aspect | Animated PNG (.apng) | AVI video (.avi) |
|---|---|---|
| Format type | Lossless — every pixel or sample is preserved exactly | Container — quality depends on the codecs and settings inside |
| How it stores data | adds three chunk types to PNG: acTL (animation control), fcTL (frame control), and fdAT (frame data) | interleaves audio and video chunks inside a RIFF file, with the codec identified by a four-character FourCC code |
| Strongest at | animated stickers (Apple's iMessage and LINE both build on APNG) | playing back footage digitized from DV and Hi8 tapes |
| Weak spot | files grow quickly for long or high-motion animations, where animated WebP/AVIF or video compress far better | no streaming support of any kind |
Drop one or more .apng 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.
Select .avi in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if AVI is selectable, the route is real and validated.
Press Convert. Decoding and re-encoding happen on your device using the browser's native image pipeline and hand-tuned encoders.
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid AVI file. Outputs keep the original filename with the .avi extension.
Since apng is lossless-oriented and avi is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .avi itself requires.
Yes — the .apng file is processed inside your browser tab and never uploaded. Decoding and re-encoding happen on your device using the browser's native image pipeline and hand-tuned encoders. Close the tab and the file is gone from memory.
Windows still opens .avi natively and macOS handles common variants through third-party players, though browsers never adopted the container. Whether a specific file plays depends entirely on the codec inside, so an old Indeo or Cinepak recording may need VLC even on Windows.
It depends on the content: interleaves audio and video chunks inside a RIFF file, with the codec identified by a four-character FourCC code. Convert one representative file first and compare before batch-processing a large set.