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.

HDR to DDS

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

HDR (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 high-dynamic-range (.hdr) images to GPU-ready .dds textures quickly and reliably for games and visualization.

Fast, GPU-focused Output

Compact DDS generation optimized for real-time use reduces manual export steps and accelerates asset pipelines.

Preserve Tonal Range

Tone mapping options retain highlight detail when converting HDR radiance maps to limited-range DDS formats.

Batch Texture Processing

Process large sets of .hdr panoramas or environment maps in one run with consistent encoding parameters.

Engine & Editor Friendly

Produce common DDS layouts like BC1/BC3/BC7-compatible data for engines and offline editors.

Adjustable Encoding

Choose compression codec, mipmap generation, and whether to apply tone mapping before writing DDS.

Client-side Processing

Files are converted locally in-browser memory, minimizing transfer of high-resolution HDR source data.

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, basic tags	Limited embedding
Primary Use	HDR imaging and lighting data	GPU textures and runtime assets

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 HDR Sources

Verify HDR source is true radiance float data so tone mapping behaves predictably during conversion
Trim or crop unnecessary regions to reduce final DDS dimensions and GPU memory footprint
Convert equirectangular panoramas to cubemap faces if your engine expects face-packed DDS arrays
Normalize exposure in HDR editors to avoid crushed highlights after quantization to BC6H or LDR blocks
Export separate specular/roughness maps rather than embedding non-radiance data inside the HDR channel set

Encode for Target GPUs

Select BC6H for high dynamic-range preservation on modern GPUs capable of HDR texture sampling
Use BC7 for tonemapped targets when alpha and high LDR fidelity are required by your pipeline
Generate mipmaps to improve sampling and reduce aliasing in runtime DDS textures
Avoid BC1 for assets needing alpha; choose BC3/BC7 when transparency must be preserved
Test resulting block artifacts at typical camera distances in-engine to validate codec choice

Verify Output in Workflow

Open DDS in a GPU-aware viewer to confirm BC format, mip chain presence, and channel packing
Compare histograms between HDR source and DDS to assess dynamic range loss after encoding
Check cubemap orientation and seam continuity after projection conversions for environment lighting
Inspect alpha channel contents in DDS when used for masks to ensure correct blending in shaders
Validate tone mapping parameters by comparing in-engine lighting to offline reference renders

Metadata & Privacy Workflow

Assume metadata like EXIF or ICC may be dropped; export sidecar metadata if needed for cataloging
Process sensitive HDR assets locally to prevent cloud transfer of large radiance maps
Group textures into batches of 20-50 for best memory scaling during client-side conversion
Clear browser caches after large exports to free temporary floating-point buffers
Transfer final DDS packages to secure servers or asset repositories with version controls

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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