What file formats do you support?

We support over 100 file formats including images (JPG, PNG, GIF, WebP, TIFF), documents (PDF, DOC, DOCX, TXT), videos (MP4, AVI, MOV), audio (MP3, WAV, FLAC), and many more specialized formats.

Yes, absolutely. We use enterprise-grade encryption for all file transfers. Your files are automatically deleted from our servers after conversion, and we never store or access your personal data.

What is the maximum file size?

The maximum file size for free users is 100MB per file. Premium users can convert files up to 1GB. For larger files, we recommend our batch processing feature.

How long does conversion take?

Most files convert in under 30 seconds. The exact time depends on file size and format complexity. Our advanced algorithms ensure the fastest possible conversion while maintaining quality.

Can I convert multiple files at once?

Yes! Our batch processing feature allows you to upload and convert up to 50 files simultaneously. This is perfect for bulk conversions and saves significant time.

Do I need to create an account?

No account is required for basic conversions. However, creating a free account gives you access to batch processing, file history, and priority support.

AVIF to HEIF

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

AVIF (Max. 10MB) • Up to 5 files in guest mode

Choose Files

Or upload from:

Temporary file processingFiles are uploaded for processing and are not retained as permanent storage. Read our File Processing & Retention Policy.

2. Conversion Settings

Convert From

Convert To

Image options

Width (px)

Height (px)

Strip image metadata (EXIF, etc.)

Advanced Options

Quality

Instant download after conversion

Why Choose Our Converter?

Fast, accurate AVIF to HEIF conversions tailored for professional image pipelines and device delivery.

Fast / Local Processing

Client-side conversion minimizes upload time and accelerates AVIF to HEIF processing in browser memory.

High Visual Fidelity

Preserves decoded chroma and luma detail when re-encoded, minimizing perceptible quality loss for typical photographs.

Privacy-Focused

Files are processed in ephemeral memory buffers in the browser; nothing is uploaded to remote servers by default.

Device Friendly Output

Produces HEIF files suited for iOS, macOS, and modern editing apps that prefer HEIF containers and HEVC-based codecs.

Batch Ready

Bulk convert many AVIFs in a single session with predictable memory usage and resumable browser workflows.

Adjustable Encoding

Choose quality and color options to balance HEIF file size and visual fidelity for target platforms.

Frequently Asked Questions

Find answers to common questions about our file conversion service

Still have questions?

Can't find the answer you're looking for? Our support team is here to help.

Performance Estimates

Estimated conversion times based on typical hardware.

Conversion Speed Benchmarks

1-3 seconds

12 MP image processing

12 MP, 4000x3000

Fast

3-6 seconds

24 MP image processing

24 MP, 6000x4000

Moderate

8-15 seconds

48 MP image processing

48 MP, 8000x6000

Slow

Batch Conversion Estimates

Batch Size	Total Time	Avg per Image	Efficiency
10 images (12 MP each)	20-40 seconds	2-4 seconds	High
50 images (12 MP each)	1.5-3 minutes	1.8-3.6 seconds	High
100 images (12 MP each)	3-6 minutes	1.8-3.6 seconds	Moderate
200 images (12 MP each)	6-12 minutes	1.8-3.6 seconds	Moderate

Browser Compatibility

Format support across all major browsers

Support Across Browsers

Chrome

Supported

Full Support

Firefox

Supported

Full Support

Safari

Supported

Full Support

Edge

Supported

Full Support

Advanced Format Features Support

Features	Chrome	Firefox	Safari	Edge
Alpha Channel
ICC Profiles
EXIF Metadata
16-bit Depth

Device Compatibility

Seamless conversion across desktop, mobile and tablet

Desktop

Fast multi-core processing
Batch upload support

Mobile

Responsive mobile browser workflow
Instant photo conversion

Tablet

Full tablet browser support
Touch-friendly interface

Source vs Target Format

Key technical differences between formats

Feature	Source Format	Target Format
Compression	High efficiency	Uncompressed
File Size	Small	Large
Quality	High (compressed)	Lossless
Transparency	Supported	Supported
Metadata	EXIF, ICC	EXIF, ICC
Primary Use	Web delivery	Editing & print

How to Convert Files

Follow these simple steps to convert your files

Upload Source File

Select or drag and drop your source files.

Adjust Settings

Choose resolution or color options if needed.

Convert

Click convert to process files locally in browser.

Download Result

Save your converted files or ZIP archive.

Ready to Convert Your Files?

Use our high-speed converter to process your images now.

Start Converting Now

Tips and Best Practices

Optimize your conversion workflow with technical recommendations.

Prepare AVIF Sources

Inspect AVIF bit depth and switch encoder settings if source uses 10-bit samples
Validate AVIF alpha channel presence before enabling HEIF transparency mapping
Strip or export critical EXIF tags separately if exact preservation is required
Normalize color space in AVIF (e.g., convert to sRGB) to reduce color shifts on re-encode
Test a representative AVIF with shadows and highlights to choose re-encode quality

Optimize HEIF Encoding

Select HEIF profile that supports alpha when the AVIF source contains transparency
Set target bitrate or quality to match AVIF subjective compression to control file size
Enable higher bit-depth output only if target devices or editors advertise support
Use lossless HEIF only for archival copies to avoid recompression artifacts
Choose HEIC/HEVC profile compliant with your target OS to ensure playback

Verify Output in Workflow

Open converted HEIF in the same editor you will use for production to check color fidelity
Compare EXIF fields and reattach missing tags using dedicated metadata tools
Confirm alpha edges and premultiplication behavior in compositing applications
Inspect 1:1 zoom areas for compression banding that may differ from AVIF rendering
Test HEIF on representative mobile and desktop viewers before bulk deployment

Performance & Reliability

Process batches of 20–50 AVIFs to avoid browser memory spikes during HEIF encoding
Close heavy GPU-using applications to free encoding resources and reduce throttling
If converting large ultra-high-res AVIFs, consider server-side encoders for guaranteed profiles
Keep originals until QC confirms HEIF outputs meet production standards
Automate verification scripts to check file dimensions, bit depth, and basic metadata post-convert

Fast Processing

Close unused tabs for maximum throughput.

Client-Side Privacy

No media leaves your device.

Broad Compatibility

Output files work across all operating systems.

Pro Tip

For batch conversions, process in groups of 20-50 files to optimize memory usage and avoid browser slowdowns.

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