Turn Standard Photos into
Stunning HDR
Instantly boost brightness, contrast, and color depth for High Dynamic Range displays. No sign-up, no uploads, just pure client-side magic.
Your Turn!
Drop an image below and play with the sliders
Waking up the engine...
Drop your image here
JPG, PNG, WebP supported
How SuperBrightImage Works
We use advanced client-side processing to unlock the hidden potential in your images.
- 1
Client-Side Processing
Your photos never leave your device. All processing happens right in your browser using WebAssembly for maximum speed and privacy.
- 2
Color Space Expansion
We map your standard sRGB images into the Rec.2020 color space, significantly widening the range of visible colors.
- 3
Bit-Depth Upconversion
Images are converted to 16-bit depth, preventing color banding and allowing for smoother gradients in bright areas.
What You Can Do With It
Perfect for creators, developers, and anyone who loves vibrant visuals.
Optimize for Social Media
Create stopping-power images that glow on Instagram and Twitter when viewed on HDR-capable phones.
Web Design Assets
Generate high-impact hero images and backgrounds that take advantage of modern XDR laptop screens.
Artistic Effects
Push contrast and brightness beyond normal limits to create surreal, neon-like artistic compositions.
Photo Restoration
Breathe new life into dull photographs by expanding their dynamic range and color vibrancy.
Frequently Asked Questions
Everything you need to know about HDR image conversion
What exactly is HDR?
HDR stands for High Dynamic Range. Compared to Standard Dynamic Range (SDR), it offers a wider range of colors and brightness levels. This means whiter whites, deeper blacks, and more detail in both shadows and highlights.
Why do I need a special display?
Standard monitors have a limited brightness output (usually around 300-400 nits). HDR displays, like Apple's XDR or many modern OLED TVs, can reach 1000+ nits. To see the 'glow' effect, your physical screen needs to be capable of emitting that extra light.
Is this tool free to use?
Yes, SuperBrightImage is completely free and open source. There are no hidden fees, watermarks, or subscriptions.
Are my photos uploaded to a server?
No. Privacy is our top priority. All image processing happens locally in your browser using WebAssembly technology. Your photos never leave your computer.
What image formats are supported?
We support most common image formats including JPG, PNG, and WebP. The output will always be a high-quality 16-bit PNG file to preserve the HDR data.
Why does the image look washed out on my other screen?
If you view an HDR image on a screen that doesn't support it (or if the OS settings aren't configured for HDR), the colors might look incorrect or 'flat'. This is normal. These images are specifically optimized for HDR-ready hardware.
Can I use these images on my website?
Absolutely! Modern browsers like Chrome and Safari support HDR images. Using them can give your website a distinctive, premium look on compatible devices.
How does the 'Intensity' slider work?
The Intensity slider multiplies the brightness values of the pixels. Pushing this up makes the bright parts of your image significantly brighter than standard white, utilizing the extra headroom of HDR displays.