Convert APNG to HEIF Online

APNG to HEIF Converter

APNG (Animated PNG) is a lossless format that stores a full animation with an alpha channel, which makes even a short loop large. HEIF (High Efficiency Image Format) is a modern container, standardized by MPEG, that stores the same picture far more compactly using HEVC compression. This converter takes your .apng and produces a single still HEIF image — useful when you want one compact, high-quality frame rather than the full animation. Because HEIF is mostly an Apple-and-modern-device format, read the support notes below before choosing it over WebP or GIF.

What This Conversion Actually Produces

APNG is an animated, multi-frame format; the HEIF this tool outputs is a single still image, not an animated .heifs sequence. During conversion the animation is reduced to one frame — by default the first frame of the loop. So treat this as "extract a high-quality still from an APNG and store it as HEIF," not "turn an animation into an animated HEIF." If you need the motion preserved, convert to APNG to WebP, which keeps both the animation and the alpha channel.

APNG Format at a Glance

HEIF Format at a Glance

HEIF vs HEIC — Which Are You Getting?

HEIF is the broad container; HEIC is the specific case where the image is coded with HEVC and given Apple's .heic naming. In practice a HEVC-coded HEIF and a HEIC file are the same payload under two extensions. If your target is specifically an Apple .heic (for Photos, iMessage, or AirDrop), use the sibling APNG to HEIC page; pick HEIF here when you want the broader container name.

How to Convert APNG to HEIF

1. Upload Your APNG File: Drag and drop your .apng onto the page or click "Upload" to pick it. You can add several files at once.
2. Set the Quality Preset: Leave Quality Preset on "Very High (Recommended)" to keep the frame near-original, or step down to High or Medium for a smaller HEIF.
3. Adjust Image Resolution (Optional): Keep the original size, scale by a Resolution Percentage, or enter a target Width/Height to shrink the output further.
4. Convert and Download: Click "Convert" and download your HEIF. No sign-up, no watermark. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours.

Frequently Asked Questions

Does the HEIF keep my APNG's animation?

No. The HEIF this tool outputs is a single still image, so the multi-frame animation is reduced to one frame (the first frame by default). HEIF can technically hold an image sequence as a .heifs file, but that is not what this converter produces. To keep the motion, convert to APNG to WebP or APNG to GIF instead.

Why won't my HEIF open in Chrome or Firefox?

HEIF has very narrow native browser support — only Safari 17 and later (macOS and iOS) decodes it in an <img> tag, and global support sits around 14%. Chrome, Firefox, and Edge have never added native HEIF decoding. If you need a frame that opens everywhere, convert to WebP or PNG rather than HEIF.

What is the difference between HEIF and HEIC here?

HEIF is the container standard (ISO/IEC 23008-12); HEIC is the same container coded with HEVC and named with Apple's .heic extension. A HEVC-coded HEIF and a HEIC file carry the same kind of payload. If you specifically need an Apple .heic, use the APNG to HEIC page; choose HEIF here for the broader format name.

Will the transparency survive the conversion?

Yes — HEIF supports an alpha channel, so the transparency from your APNG frame is preserved in the still HEIF. This is one reason to prefer HEIF over JPEG, which would flatten transparency onto a solid background.

How much smaller is a HEIF than the original APNG?

It is usually much smaller, because APNG stores every frame losslessly while a still HEIF stores one frame with efficient HEVC compression. In our testing, a 12-frame APNG loop of about 6 MB converted to a single still HEIF of roughly 90-150 KB at the Very High preset. Lowering the preset or resolution shrinks it further.

Is the HEIF spec still maintained, and which codec does the output use?

HEIF is an active ISO/IEC standard (23008-12), first published in 2015 and revised since. This tool's output uses the default HEVC codec, which is what most HEIF readers — including Apple's — expect. The container can also hold AV1 or AVC payloads, but those are not produced here.

Should I choose HEIF or WebP for a single frame from my APNG?

Pick WebP when you need the still to open in ordinary web browsers or you might later want the animation back — WebP is supported almost everywhere and can also stay animated, via APNG to WebP. Pick HEIF when your target is the Apple or modern-device ecosystem and you want the most compact high-quality still, since HEVC-coded HEIF typically packs a frame smaller than an equivalent-quality WebP. In short: WebP for reach, HEIF for maximum compression inside a supported ecosystem.

Does converting to HEIF lose quality compared with the APNG frame?

Slightly, by design. APNG stores each frame losslessly, whereas HEIF encodes the still with HEVC, a lossy codec, at the Quality Preset you select. At "Very High" the difference is hard to see and the file is a fraction of the size; stepping down to High or Medium trades more visible detail for an even smaller HEIF. If you need a pixel-exact, lossless still instead, keep the frame as PNG rather than HEIF.