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.

DDS to HDR

Drag, drop, and convert your files with ease.

1. Add Your Files

Drag & drop or paste files here

DDS (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, reliable DDS to HDR conversion tailored for game assets, VFX workflows, and batch productivity

Fast Batch Processing

Convert large DDS collections quickly with optimized multi-file queuing and predictable throughput.

HDR Output Fidelity

Produce Radiance (.hdr) files with preserved high dynamic range where source data permits higher precision.

Scalable Batch Support

Efficient memory use for groups of 20–200 DDS files to maximize conversion throughput without manual scripting.

Engine-Friendly Results

Generate HDR files compatible with renderers and game engines that accept Radiance or similar HDR formats.

Adjustable Tone Mapping

Choose exposure and gamma options during conversion to adapt DDS low-precision data into HDR range.

Client-Side Processing

Conversions run in-browser memory buffers so your DDS source files are not uploaded to remote 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 DDS Source Surfaces

Inspect DDS block codec (BC1/BC3/BC6H/BC7) and prefer BC6H when HDR data is intended
Extract and store mipmap chains separately if you need per-level control after conversion
If DDS contains alpha, export it as a mask before converting since HDR lacks standard alpha support
Normalize gamma in source DDS if stored with display-referred values to avoid double-gamma in HDR
Verify channel ordering (RGBA vs BGRA) in your DDS generator to prevent swapped channels in HDR output

Target HDR Encoding Choices

Choose Radiance (.hdr) for floating-point RGB output when preserving highlight roll-off is critical
When source is 8-bit DDS, enable exposure adjustment to better utilize HDR float range
Avoid claiming restored precision: upconverted 8-bit channels cannot regain original dynamic detail
Select linear color output for renderer compatibility rather than sRGB if downstream expects scene-linear
Export sidecar alpha or masks when compositing workflows require preserved transparency

Integration & Verification Workflow

Load sample HDR outputs into your target engine (Unreal, Unity, renderer) to verify lighting response
Compare key texels between DDS source and HDR output at full precision to detect decoding errors
Test cubemap face alignment by converting faces individually and inspecting seams in viewer tools
Automate checksums and pixel-difference sampling on batches to catch codec-specific conversion regressions
Document source DDS codec and conversion settings alongside output filenames for traceability

Batch Reliability & Privacy

Process batches in groups of 20–50 DDS files to balance RAM and CPU utilization for stability
Keep originals archived; converted HDRs are larger and harder to diff for artifact origin tracing
Run conversions in an isolated browser profile to limit memory contention from extensions
If files contain proprietary texture metadata, extract it to sidecars before conversion since mapping is unreliable
Download converted HDR packages promptly and clear temporary buffers to minimize local storage risk

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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