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.

PNG to HEIF

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

PNG (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?

Effortless PNG to HEIF conversion for modern devices, balancing quality, transparency and efficient storage in one browser tool.

Fast Browser Conversion

Convert PNG images to HEIF client-side without uploads, reducing wait times and preserving privacy.

High Visual Fidelity

HEIF’s modern compression retains perceived detail while reducing file size versus typical PNGs for photographs.

Alpha Transparency Handling

We attempt to preserve PNG alpha where HEIF profile supports it; verify transparency post-conversion in your target app.

Efficient Batch Processing

Process multiple PNGs in sequence; optimized pipeline reduces per-image overhead for medium-sized batches.

Device Sharing Optimized

Produce HEIF files tailored for modern iOS and Android devices to minimize bandwidth for sharing and backup.

Client-Side Privacy

All decoding and encoding happen in the browser environment, limiting exposure of source PNGs to external servers.

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 PNG Source

Strip unnecessary PNG ancillary chunks that aren’t required by workflows to simplify metadata mapping into HEIF
Flatten layered exports before converting since PNG is a flattened raster and layered data cannot be recovered post-conversion
Embed an ICC profile in the PNG prior to conversion so the HEIF writer can attempt to include matching color profile boxes
Avoid alpha fringes by pre-matting edges in PNG when target viewers may flatten HEIF alpha on display
Normalize color space (sRGB) in PNG when delivering HEIF for web or social platforms to reduce color shift risks

Choose HEIF Encoding Strategy

Select higher quality HEIF encoding for photographic PNGs to maintain texture while lowering file size compared to PNG
Use conservative compression settings for images destined for print or editing to minimize visible quantization
When source PNG is 16-bit, plan for bit-depth reduction to 8/10-bit in HEIF and validate gradients after export
Include a PNG fallback for CMS or recipients lacking HEIF support to preserve compatibility
Batch similar-resolution PNGs together to apply consistent encoder profiles and simplify QA

Verify Output Across Tools

Open converted HEIF in the intended mobile and desktop viewers to confirm alpha and color rendering match expectations
Check embedded metadata fields in the HEIF container when workflows depend on EXIF/XMP values migrated from PNG text chunks
Compare histograms and 100% zoom crops between PNG and HEIF to detect introduced banding or edge artifacts
Test import into target editors (Photoshop, Affinity, native Photos apps) to ensure HEIF thumbnails and layers behave as required
Run automated sample checks for a batch to catch conversions that require different encoder presets

Workflow Constraints & Privacy

Keep conversions client-side when PIN or privacy-sensitive imagery is involved to avoid server-side retention risks
Process batches of 20–50 PNGs to balance memory usage and throughput in browser-based HEIF encoding
Close memory-heavy browser tabs during encoding to reduce the chance of out-of-memory failures while converting large PNGs
If archival fidelity matters, retain original PNGs in storage and use HEIF as distribution copies only
Promptly download converted packages and clear local caches when working on shared or public workstations

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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