HEIC to AVIF Converter

HEICcon’s HEIC to AVIF converter turns Apple HEIC photos into the AVIF format directly in your web browser. Unlike cloudconvert or freeconvert, your images are never uploaded to a server, keeping your data secure and private on your device.

Features & Benefits

• Secure HEIC to AVIF conversion: Your HEIC images stay on your device's browser during format conversion. No image data is ever sent to a remote server, ensuring total privacy for your personal photos.

• Fast HEIC to AVIF conversion: Because there is no upload or download delay, your HEIC files load and convert to AVIF almost instantly the moment you add them. The conversion process is equally fast on slower internet network.

• Control output AVIF image quality: Adjust the compression levels during conversion to balance AVIF image file size and visual quality.

• Resize Output AVIF Images: Resize HEIC images while converting to AVIF with custom width and height to improve pageload speed.

• Batch Convert HEIC images to AVIF: Process your HEIC photo library efficiently by converting up to 50 HEIC images to the AVIF file format in a single batch.

• No Restrictions: This is a completely free online tool with no daily conversion limits and no registration or sign-up required.
  
  

HEICcon’s HEIC to AVIF converter is designed for speed and simplicity. You can process up to 50 HEIC images in a single batch to convert them to AVIF format without any software installation or uploading files to a server.

1. Add your HEIC files

You have multiple ways to import your HEIC photos:

• Drag and Drop: Move your .heic or .heif files directly onto the drop zone.

• File Picker: Click the "Choose Files" button to browse your device.

• Cloud & Web: Import directly from Google Drive, Dropbox, or load them by pasting a URL from the web.

2. Set Output AVIF image Quality & Resize Dimensions (Optional)

Once your HEIC images are loaded, you can customize the final output quality and file size using the quality slider.

• The Default Quality Advantage: If you skip this step, the tool uses a default quality of 75. This provides a perfect balance, often shrinking a 2MB HEIC file down to 1–1.6MB while remaining virtually indistinguishable from the original.

• Manually Set the Quality: Use the slider to prioritize either file size or visual quality. Refer to this table to choose the best setting as per your requirements:
  
  

  Quality	Size vs HEIC	Est. Size (from 2MB HEIC)	Visual Result	Best For
  75 (Default)	0.3–0.8x	0.6MB – 1.6MB	Virtually indistinguishable	General use, sharing
  50	0.15–0.5x	0.3MB – 1.0MB	Equivalent to JPEG 85	Web, social media
  30	0.08–0.3x	0.1MB – 0.6MB	Slight softness in complex textures	Thumbnails, previews
  10	0.03–0.1x	0.06MB – 0.2MB	Heavy smoothing	Extreme compression

3. Convert HEIC and Download AVIF files

Click the Convert button to begin the heic to avif conversion process. The HEIC to AVIF converter uses parallel "web workers" to process multiple HEIC images at once.

• Format & Naming: Your output AVIF files are saved as standard .avif files (compatible with Chrome, Safari, and Firefox) and retain their original filenames.

• Privacy & Metadata: All sensitive EXIF metadata (GPS, camera settings) is automatically stripped during conversion, thus ensuring privacy.

• Download: Save files individually or download the entire batch in a single ZIP file.

• Initial AVIF Encoder Loading: You may notice a brief pause or delay when converting your first file. This occurs because the browser is initializing the AV1 WebAssembly (WASM) encoder locally. Once this one-time setup is complete, all subsequent HEIC files in your batch will process much faster.

• Managing Browser Performance: Encoding to the AVIF format is more CPU-intensive than standard formats. If you are on a mobile device or a computer with lower RAM, we recommend converting in batches of 10–20 images to ensure your browser remains responsive while the "Web Workers" handle the heavy compression.

• Preventing Banding in Gradients: Because the converter maps 10-bit HEIC data to the 8-bit sRGB AVIF standard for web compatibility, subtle banding can sometimes appear in clear skies. To minimize this and maintain high visual fidelity, set the output quality slider to 85 or higher.

• EXIF Data Removal: To ensure your files are ready for secure web publishing, this HEIC to AVIF tool automatically strips all EXIF metadata. Sensitive information, such as GPS coordinates and camera timestamps is removed locally before you download your AVIF files.