GIF to HEIC Converter
Convert GIF to HEIC in your browser. GIF files usually come from reaction clips, memes, old websites and screen recordings; HEIC is the better fit for storing photos on Apple devices. You get a HEIF file whose picture is JPEG-compressed rather than HEVC, because no HEVC encoder runs in a browser. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
GIF expected · other image formats also work
How to use GIF to HEIC
- 1
Add your GIF files: drop them here, choose them, or paste from the clipboard.
- 2
Pick the colour that replaces transparent areas, since HEIC has none.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .heic files one at a time or together as a ZIP.
Why use Aback Images for gif to heic
Where the HEIC goes next
HEIC opens in Apple devices, recent Android phones, and Windows with the HEIF and HEVC extensions.
HEIC next to GIF
A lossy HEIC usually comes out far smaller than the GIF, which stores lossless LZW over a palette of at most 256 colours.
The first lossy pass
The GIF holds 8 bits per pixel, as indexes into a palette with nothing discarded yet. This conversion is the first lossy encode these pixels see, and hard edges and flat colour show it first.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
GIF vs HEIC
What changes from GIF to HEIC
Encoding: the GIF uses lossless LZW over a palette of at most 256 colours; HEIC uses lossy HEVC (H.265) intra coding, on iPhones as a grid of 512×512 tiles, and the download is a HEIF file whose picture is JPEG-compressed rather than HEVC, because no HEVC encoder runs in a browser.
Bit depth: 8 bits per pixel, as indexes into a palette in the GIF; HEIC allows 8 or 10 bits per channel, and the HEIC written here has 8 bits per channel.
Colour: an indexed palette of up to 256 colours per frame in the GIF; HEIC supports YCbCr, usually tagged Display P3 on iPhones, written here as 8-bit sRGB.
Transparency: the GIF stores it as one palette entry marked transparent, so each pixel is either fully shown or fully hidden; HEIC could hold it as an auxiliary image item, rarely used by cameras, but this writer flattens it, so transparent areas are filled with the colour you choose.
Animation: image blocks with their own delay and disposal method, looped by the NETSCAPE2.0 extension; the HEIC holds one image, so only the first frame is converted.
Metadata: the GIF can carry comment and application extension blocks, but no EXIF; HEIC can carry EXIF, XMP and an ICC profile, stored as items, but nothing is copied across.
About GIF
GIF is the classic animated image format. It is limited to 256 colours per frame and 1-bit transparency, so photos look grainy and files are large, but it plays everywhere.
A GIF starts with 'GIF89a' (or the older 87a), a logical screen descriptor and an optional global colour table, then image blocks, each preceded by a graphic control extension that sets its delay and transparent colour.
GIF files usually come from reaction clips, memes, old websites and screen recordings.
About HEIC
HEIC is the default photo format on iPhones and many Android phones. It is about half the size of JPEG, but Windows, many websites and older software cannot open it without converting.
A HEIC is a HEIF file (ISO base media boxes with the brand 'heic'). iPhone photos store the picture as a grid of 512×512 HEVC tiles that the decoder stitches together, with the thumbnail, depth map and HDR gain map as further items.
When converting GIF to HEIC makes sense
HEIC is the better choice for storing photos on Apple devices, while GIF suits short animations and reactions that must play everywhere.
HEIC strengths: About half the size of JPEG; Stores depth maps, Live Photos and HDR. Drawbacks to weigh: Not supported by most websites and Windows apps; Patent-encumbered codec.
Limitations
- Dithering in a GIF is baked into the pixels: the speckle pattern survives the conversion and costs extra bytes in lossy formats.
- The 256-colour palette is already applied, so a full-colour target cannot bring back gradients the GIF flattened into bands.
- The file is a valid HEIF, but its picture is JPEG-coded rather than HEVC, so apps that expect HEVC (Apple Photos, Windows' HEVC extension) may not open it.
- The picture inside is JPEG-coded, so the file is about the size of a JPG at the same quality rather than the half size of a camera HEIC.
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Frequently asked questions
Does converting GIF to HEIC lose quality?
HEIC is lossy, so detail the eye barely notices is discarded to save space.
What happens to transparency when converting GIF to HEIC?
GIF stores transparency as one palette entry marked transparent, so each pixel is either fully shown or fully hidden. HEIC has no alpha channel, so transparent pixels are composited onto a solid colour, white unless you pick another. To keep transparency, convert to PNG, WebP or AVIF instead.
Will my animated GIF stay animated?
No. HEIC holds a single image, so only the first frame is kept. Convert to animated WebP, APNG or GIF to keep the motion, or export every frame with the GIF Frame Extractor.
Will the HEIC open in Apple Photos?
Not always. The file is a valid HEIF container, but its picture is JPEG-compressed rather than HEVC, because no HEVC encoder can run in a browser. libheif-based apps such as GIMP, darktable and ImageMagick open it; Apple Photos and Windows' HEVC extension expect HEVC and may refuse it. For an iPhone, JPG is the safer choice.
Which apps open HEIC files?
Apple devices, recent Android phones, and Windows with the HEIF and HEVC extensions. It opens in Safari on recent Apple systems; other browsers do not display it.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.