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HDR image guide

How to Make Whites Glow on an HDR Screen

An HDR image can display its brightest whites above ordinary screen white. Used carefully, that extra headroom makes logos, snow, reflections, and lights feel luminous without changing the whole picture.

Explore Easy HDR Glow

What “brighter than white” means

A normal SDR image treats reference white as its practical ceiling. An HDR display can reserve additional brightness above that point for highlights. The page around an image can still look normally white while selected pixels in the image shine more intensely.

The effect depends on three things working together: the image must contain HDR information, the viewing app must preserve and display it, and the screen must have enough HDR headroom. If any one of those pieces is missing, the image should fall back to an ordinary SDR appearance rather than glow.

Choose areas that benefit from HDR

The most natural results come from details that already look bright: a white logo, sunlight on water, snow, a reflection, a lamp, or a polished edge. Raising every bright tone equally can make a picture feel flat, so a useful workflow starts the boost near the top of the luminance range and uses a soft transition.

Keep the image familiar. HDR is most convincing when the highlight feels like light, not when the entire picture simply looks overexposed.

Gain-map HEIC or Rec.2100 PQ JPEG?

HEIC with a gain mapStores a familiar SDR base plus information describing how compatible devices should expand the highlights. This is a strong choice for Apple devices and apps that understand gain maps.
JPEG with Rec.2100 PQEncodes the HDR result directly in a PQ color space. It can work well for compatible websites and email clients, but software that recompresses or converts the file may flatten the effect.

Neither format guarantees that every destination will show HDR. The best export depends on where the image will be viewed, so test the exact browser, mail client, website, or transfer method you plan to use.

Preserve useful photo information

An HDR conversion does not have to discard the context stored with a photo. Capture dates, camera details, captions, and GPS information can be carried into an export. Location data may be sensitive, however, so inspect what is present before sharing publicly. If you need to correct or remove fields, Easy EXIF Editor provides a separate on-device metadata workflow.

Verify the finished result

  1. Open the export on a known HDR-capable display.
  2. Check it in the actual app or browser where it will be used.
  3. Compare the highlight against nearby interface white.
  4. Send or upload a test copy, then inspect the received version.
  5. Keep an SDR-friendly fallback for destinations that do not preserve HDR.

Social and messaging services may resize, recompress, or convert an uploaded image. A glow visible in Photos or Safari can therefore disappear after posting. Testing the delivered file is more reliable than assuming a service preserves the original.

Make the process repeatable

Easy HDR Glow is designed to apply this workflow on iPhone and iPad: choose one or more photos or logos, set where the glow begins, control the peak and transition, compare the result, and export in an HDR format while preserving metadata. Batch processing lets a related set use the same starting settings while still allowing individual review.

Learn more about Easy HDR Glow, or read its privacy and support information.