Convert GIF to HEIC — Free & Private

Does converting GIF to HEIC lose any quality?

GIF is lossless, but it's already limited to a 256-colour palette — so the source image has less colour detail than a photo straight off a camera. HEIC is typically saved with lossy compression, which discards some additional detail on top of that. At a quality setting of 85-90, the additional loss from HEIC's compression is generally not visible, but the image still inherits GIF's original palette limitation — HEIC can't restore colours the GIF never had.

• HEIC's own compression at quality 85+ is rarely visible at normal sizes
• GIF's 256-colour palette limit carries through regardless of HEIC quality setting
• For images with sharp text or fine lines, check the HEIC output at full zoom before relying on it
• Keep the original artwork (not the GIF) as your source if you need full colour fidelity later

What happens to transparency when converting GIF to HEIC?

GIF transparency is a simple on/off flag for each pixel — there's no partial transparency. HEIC supports an alpha channel in principle, but support for it is inconsistent across devices and software, even within Apple's own ecosystem. Many tools that open HEIC files will flatten transparent areas onto a solid background (usually white) rather than preserving them.

• GIF transparency is binary — pixels are either fully shown or fully hidden
• HEIC's alpha-channel support varies by app and OS version — test before relying on it
• If transparency must be preserved reliably, PNG or WebP are safer choices than HEIC
• Always check the converted file if your GIF has transparent regions

What quality setting should I use for the HEIC?

Quality 85 is a reasonable default for most images — it keeps file sizes down without introducing visible compression artifacts on top of whatever the GIF already lost. If the image is mostly flat colours (icons, simple graphics), you can often go lower without a visible difference. If it's a photo you plan to view at full size or print, use 90-95.

• Quality 85: good default for general use
• Quality 70-80: fine for thumbnails or small previews
• Quality 90-95: photos viewed full-size or printed
• Quality 100: rarely worth the extra file size, especially starting from a GIF

Will the HEIC file actually be smaller than the GIF?

It depends on the image. GIF's LZW compression already does a decent job on flat-colour graphics, so a HEIC version of a simple icon or logo might not be much smaller — and could occasionally be larger once you account for HEIC's container overhead. For photographic content where the GIF's 256-colour palette produced visible banding, HEIC at quality 85 will usually be both smaller and look better, since it can use the full colour range with efficient compression.

• Photographic GIFs: HEIC is usually smaller and shows more accurate colour
• Simple flat-colour graphics: size difference may be small either way
• Animated GIFs: most browser-based converters export a single still frame as HEIC
• If file size for a simple graphic matters most, compare both files before deciding which to keep