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.

CRW to HEIF

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

CRW (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, professional CRW to HEIF conversion optimized for photography workflows and modern storage efficiency

Fast, Camera-Grade Decode

Efficient CRW decoding pipeline accelerates RAW demosaicing for quick HEIF exports without long wait times.

High-Fidelity Output

HEIF encoding retains high image detail and chroma subsampling options suitable for archive-ready results.

Wide Device Support

HEIF results open on modern macOS, iOS and recent Windows builds, streamlining delivery to end-users.

Local, Private Processing

Conversions execute in the browser memory buffers so source CRW files are not uploaded to external servers.

Customizable Encoding

Adjustable quality and color options let you balance HEIF compression and visual fidelity for each workflow.

Storage Efficient Results

HEIF typically reduces file size versus TIFF/PNG while preserving more detail than aggressive JPEG compression.

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 CRW Before Export

Apply camera-specific white balance in RAW if you want it baked into HEIF rather than stored as RAW metadata
Use native demosaic or a trusted RAW processor to correct color moiré before encoding to HEIF
Flatten in-camera multiple exposure CRW variants into single images if the converter cannot handle multi-record CRW
Export CRW previews separately when you need the camera-generated thumbnail retained alongside HEIF
Confirm lens correction is applied in the CRW processing stage because HEIF cannot reconstitute raw lens-data adjustments

Choose HEIF Encoding Strategically

Select lossless HEIF if you require archival parity with minimal compression artifacts
Prefer 10-bit HEIF profiles when preserving gradation from high-dynamic-range CRW sources
Use higher HEIF quality settings to reduce quantization visible in shadows from CRW demosaicing
Avoid maximum chroma subsampling for images with saturated color from CRW sensors to preserve hue accuracy
Enable ICC embedding when available to keep color pipeline continuity from RAW to HEIF

Validate Output in Target Tools

Open HEIF in your target editor to check color matching against CRW in full-screen 100% zoom
Inspect EXIF and maker notes in HEIF to ensure GPS and lens fields migrated correctly from CRW
Compare histogram shapes between CRW-derived preview and HEIF to detect clipping introduced by encoding
Test HEIF files on intended delivery platforms (mobile apps, CMS) to confirm compatibility
If edits will continue, keep originals; HEIF is not a substitute for RAW reprocessing workflows

Workflow Reliability & Privacy

Process sensitive CRW files locally to avoid exposing maker metadata to third-party services
Batch in groups of 20–50 CRW images to balance throughput and browser memory constraints
Close background GPU-heavy apps to give priority to browser-based HEIF encoding tasks
Verify checksum or file size heuristics post-conversion to detect incomplete HEIF writes
Download HEIF packages immediately and remove temporary browser cache when handling confidential shoots

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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