Image converter
Convert HEIC to AVIF
Private format conversion with optional resizing, compression, and adjustments. Your files never leave this browser.
Drag & drop images here, or click to browse
PNG, JPG, WEBP, HEIC, AVIF, BMP, GIF, TIFF — up to 25MB each (max 20 files)
About converting HEIC to AVIF
Convert HEIC to AVIF — two high-efficiency formats. If you are leaving the Apple ecosystem, AVIF offers broader web compatibility than HEIC: browsers render it natively, editors accept it, and the compression efficiency of HEVC-based HEIC carries over cleanly.
HEIC is the default photo format on iPhones and iPads since iOS 11, built on the same HEVC video codec used for 4K recording. It stores more image in fewer bytes. AVIF is the newest mainstream image format, derived from the royalty-free AV1 video codec and standardized in 2019. It represents the current ceiling of compression efficiency.
Both formats share the same compression philosophy, so the conversion is mainly about compatibility and file size rather than a change in image quality behaviour.
When to use HEIC vs AVIF
Choose AVIF when modern websites, image CDNs, progressive web apps, and any workflow where bandwidth savings outweigh legacy compatibility. Keep HEIC when storing photos on Apple devices, and — after conversion — sharing those photos anywhere that still expects JPEG or PNG.
On strengths: HEIC brings roughly halves file size at photo quality comparable to JPEG, preserves Live Photo data, and keeps 10-bit color for smoother gradients. AVIF brings often 50% smaller than JPEG at the same perceptual quality, with strong protection against compression artifacts on faces, gradients, and flat color.
The trade-off: Windows, Android, the web, most email servers, and countless third-party apps cannot open HEIC natively without installing a codec or converting first. Encoding is computationally heavier, very old devices may render it slowly, and some legacy editors and operating systems still do not support it.
How to convert HEIC to AVIF
The converter runs entirely in this browser tab — there is no upload, no account, and no file-size harvesting. Follow these steps:
- Drop your HEIC files onto the converter above, or click the drop zone to browse. Up to 20 files can queue at once, each up to 25 MB.
- The output defaults to AVIF. Adjust the quality slider if the format is lossy, or resize/crop first if you also want to change dimensions.
- Press Convert. Decoding and encoding happen in browser memory using Canvas — your pixels never leave the device.
- Preview the result, then download it individually or grab the whole batch as a ZIP.
About HEIC — High Efficiency Image Container
HEIC is the default photo format on iPhones and iPads since iOS 11, built on the same HEVC video codec used for 4K recording. It stores more image in fewer bytes.
Typical uses: Storing photos on Apple devices, and — after conversion — sharing those photos anywhere that still expects JPEG or PNG.
About AVIF — AV1 Image File Format
AVIF is the newest mainstream image format, derived from the royalty-free AV1 video codec and standardized in 2019. It represents the current ceiling of compression efficiency.
Typical uses: Modern websites, image CDNs, progressive web apps, and any workflow where bandwidth savings outweigh legacy compatibility.
Tips for a clean HEIC → AVIF conversion
- Work from the highest-quality HEIC source you have. Converting from an already-compressed copy stacks compression artifacts on top of each other.
- Aim for quality 85–90. Above that, file size climbs for almost no visible gain; below 70, banding and blockiness appear around edges.
- Batch similar images together — files with comparable dimensions convert in the same pass, which keeps the workflow fast.
- Keep the original file. Even lossless conversions can subtly change color profiles, and the source is your safety net.
Frequently asked questions
Is this HEIC to AVIF converter free?+
Yes. All image conversions are completely free with no sign-up, no watermarks, and unlimited usage.
Are my images uploaded to a server?+
No. All conversion happens locally in your browser via the HTML5 Canvas API. Your files are never uploaded or stored anywhere.
Will converting HEIC to AVIF reduce quality?+
Both HEIC and AVIF use lossy compression, so the image is re-encoded rather than copied. Staying at quality 85 or above keeps the output visually identical to the source; dropping lower trades detail for smaller files.
Can I convert multiple HEIC files at once?+
Yes — drop up to 20 files into the converter and they will all be processed in a single batch. Each file can be up to 25 MB. The batch downloads as a ZIP, or you can save results individually from the preview.
Does this converter work on phones and tablets?+
Yes. The converter is a responsive web app that runs in any modern mobile browser — iOS Safari, Chrome for Android, and others. Files are processed on-device, so mobile uploads are not sent anywhere and the connection speed does not affect conversion time.