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 HDR

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?

Convert PNG images to HDR-ready files with precise color handling and fast local processing.

Fast Local Conversion

Convert PNG to HDR quickly in-browser without uploading to servers, minimizing latency and privacy risk.

Wide Gamut Support

Target HDR containers support extended luminance and wider color spaces for richer highlights and deeper contrast.

Editing Workflow Ready

Outputs are compatible with HDR-aware editors and players that accept open HDR formats and floating-point images.

Alpha Channel Handling

PNG alpha is preserved where HDR format supports transparency; otherwise alpha is flattened to background color.

Color Profile Awareness

We detect embedded PNG ICC profiles and map them to HDR color spaces when feasible; verification is recommended.

Client-Side Processing

Files are processed in secure browser memory buffers, keeping source images on your device during conversion.

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 Color Data

Confirm PNG embedded ICC profile and convert to linear space before HDR export to avoid gamut mismatch
Flatten or encode premultiplied alpha explicitly if target HDR workflow expects unassociated alpha
Convert palette-based PNGs to full RGB to avoid indexed-color artifacts when upconverting to float
Remove gamma-only edits; encode images in linear light to preserve highlight rolloff in HDR
Verify that clipped highlights in PNG cannot be recovered before relying on float expansion

Manage HDR Output Precision

Choose 16-bit float for balanced file size and dynamic range when editing in most HDR apps
Select 32-bit float only if extreme precision is required for compositing or scientific imagery
Enable container compression (where available) to reduce large float file footprints
Be aware that some viewers downsample float precision on load; test in your target application
Label outputs with precision metadata to avoid mixing 16f and 32f assets in a pipeline

Verify in Target Software

Open converted HDR in your intended editor (e.g., Resolve, Photoshop) to confirm color mapping
Check alpha compositing modes in the editor to ensure correct premultiplied vs unassociated handling
Inspect histogram and highlight recovery to validate tone mapping choices applied during conversion
Compare side-by-side pixel values at 100% to detect banding or precision loss after conversion
Test exported HDR in the final display pipeline (HDR monitor or renderer) for expected luminance

Workflow Reliability

Process PNG batches in groups of 20-50 to reduce browser memory spikes during float conversion
Keep originals archived; float HDR outputs are not reversible back to original PNG losslessly
Validate metadata transfer per file—assume EXIF/ICC may not be embedded in all HDR containers
Close other heavy applications to ensure consistent memory for high-resolution float processing
Download and verify converted packages promptly to avoid transient browser cache issues

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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