Convert HEIC photos from your iPhone to AVIF, the smallest modern format. Around 50% smaller than JPEG with transparency support.
AVIF
Smallest Format
~50%
Smaller than JPEG
Batch
Multiple Files
Private
No Uploads
AVIF encoding is slower than JPEG or WebP. Large files or large batches may take a little longer to finish, entirely in your browser.
Drop HEIC files here or click to browse
Supports .heic and .heif. All processing stays in your browser.
AVIF is the most efficient widely supported image format available today. It typically produces files around 50 percent smaller than an equivalent JPEG and noticeably smaller than WebP, while keeping visual quality close to the original. It also supports transparency. For web use, AVIF is the format that delivers the smallest possible page weight from a HEIC source.
Maximizing page speed
Replacing a large HEIC export with AVIF reduces page weight more than almost any other format choice.
Photographic detail
AVIF's compression advantage is most pronounced on detailed photographic content, exactly what HEIC photos contain.
Transparency support
Unlike JPEG, AVIF supports alpha transparency. Convert HEIC screenshots or product photos that need a transparent background.
Modern browser support
AVIF support is now near universal across Chrome, Safari, Firefox and Edge as of 2026.
If you need guaranteed compatibility with older software or upload portals, use the HEIC to JPG converter instead.
HEIC and AVIF both grew out of video codec technology rather than being built from scratch as photo formats. HEIC is based on HEVC, AVIF on AV1, and the two codecs share a lot of the same compression thinking. That means converting between them isn't the dramatic size overhaul you'd get going from an old format like BMP or GIF, since HEIC was already fairly efficient to begin with.
What HEIC actually struggles with is support, not compression. Most software outside Apple's own ecosystem, plenty of Android phones, and a long list of upload portals still can't open a HEIC file directly. Converting to AVIF trades a format built around one ecosystem for one with near universal browser support, so the real win here is compatibility. The file might shrink a little further, but don't expect the same dramatic drop you'd see converting a much older format.
Photos shot with an iPhone's Smart HDR carry extra brightness and color range beyond what standard 8-bit JPEG can store, so converting an HDR HEIC straight to JPEG throws that extra range away. AVIF supports higher bit depth output and can retain more of that dynamic range than JPEG, which matters most for sunsets, backlit portraits, and anything shot in high contrast light.
A HEIC file from a Live Photo or portrait mode shot can bundle depth data or reference a short video clip alongside the still image. This tool, like sharing a Live Photo outside Apple's own apps, only carries over the primary still frame. If you need the moving portion of a Live Photo, export that separately from the Photos app before converting the still image here.
AVIF is the most efficient widely supported format for photographic content, typically producing files around 50 percent smaller than an equivalent JPEG and noticeably smaller than WebP at the same visual quality. For HEIC photos headed to a website where maximum compression matters most, AVIF gives the smallest practical file size.
Yes. AVIF support is now near universal across Chrome, Firefox, Safari and Edge, and Google's PageSpeed Insights recommends it as a preferred format for web images. For guaranteed compatibility with very old browsers, software or upload portals, JPEG or WebP remain safer fallback choices.
Yes, AVIF encoding is more computationally intensive and can take noticeably longer than JPEG or WebP, especially for large HEIC files or big batches. This happens entirely in your browser using WebAssembly, so there is no upload wait, only the local encoding time itself.
Yes. AVIF supports full alpha transparency. Most iPhone HEIC photos do not contain transparency, but if the original does, the AVIF output will preserve it.
No. All conversion happens entirely in your browser. Your files never leave your device. GPS, EXIF and metadata are not present in the AVIF output.
Yes. Drop multiple HEIC files or select them from the file picker. Each converts independently. Download individually or as a ZIP file.
HEIC to JPG
Convert HEIC to JPEG for maximum compatibility with older apps and portals.
HEIC to WebP
A more mature, widely supported alternative with transparency support.
HEIC to PNG
Lossless HEIC conversion with full transparency preserved.
JPG to AVIF
Already have JPEGs? Convert to AVIF for smaller files.
