# HLG to SDR/HDR — HLG HEIF to SDR and HDR

> HLG HEIF to SDR and HDR (iPhone/iPad app by Dmitry Semenov.)

- Source: https://appshunter.io/ios/app/hlg-to-sdrhdr/id6815170970 (this page in markdown: same URL + `.md`)
- Developer: [Dmitry Semenov](https://appshunter.io/developer/6815170972)
- Category: Photo & Video
- Price: Free
- Age rating: 4+
- Requires: iOS 26.0 · 1 MB
- Languages: American English, Japanese, Russian, Chinese (Simplified, China), European Spanish
- Released: 2026-09-23
- Data updated: 2026-10-02

## What is HLG to SDR/HDR?

HLG HEIF files from Sony cameras are made for HDR displays, but other software handles them poorly: Apple Photos clips the highlights and shifts skin and sky tones when it converts them, and professional editors need an involved HDR workflow. Almost everywhere else — messengers, the web, most apps — the photos come out flat or wrong. HLG to SDR/HDR turns them into files that look right everywhere, with natural colors and the detail in the highlights kept.

TWO LOOKS
• BT.2446 — the ITU standard conversion from HDR to SDR. An honest, finished picture.
• Flat — keeps the most detail in the highlights: a starting point for further editing. Only Flat can also write an HDR version.

FOUR FORMATS
• JPEG — opens everywhere.
• HEIF, 8 or 10 bit — 10 bit leaves room for later editing.
• JPEG + HDR and HEIF + HDR — one file with an ISO 21496-1 gain map. Ordinary screens show the SDR picture; HDR displays let the highlights back out.

HOW IT WORKS
• Pick photos from your library or from Files — a card reader, a USB drive, iCloud Drive.
• Frames without HLG are skipped, and the app tells you how many.
• Results go into an album of your choice as new photos. Your originals are never changed.
• Adjustable compression quality; the size of every result is shown.

PRIVATE
No account, no tracking, no data collected. Every photo is processed on your device.

CAMERAS
Made for HLG HEIF files from Sony cameras. Other cameras that write HLG HEIF, such as Nikon Z8, Z9 and Zf, should work but have not been tested. Canon PQ files and Panasonic HSP are not supported.

Sony and Nikon are trademarks of their respective owners. This app is not affiliated with them.

## Is HLG to SDR/HDR safe?

Not enough ratings yet to assess HLG to SDR/HDR.

## Is HLG to SDR/HDR legit?

HLG to SDR/HDR has limited verification signals. The AppsHunter Legitimacy Score for HLG to SDR/HDR is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 0.78 — 2026-09-23

No release notes.

## Apps similar to HLG to SDR/HDR

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Tonely: HDR to SDR Video](https://appshunter.io/ios/app/tonely-hdr-to-sdr-video/id6813074433) | — | Free | Photo & Video |
| [Saint Studios - Video Editor](https://appshunter.io/ios/app/saint-studios-video-editor/id6814842049) | 5.0 (1) | Free | Photo & Video |
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| [PhotoFix: HDR to Normal Photos](https://appshunter.io/ios/app/photofix-hdr-to-normal-photos/id6816526877) | — | Free | Photo & Video |
| [taption encoder](https://appshunter.io/ios/app/taption-encoder/id6780777838) | — | Free | Photo & Video |
| [RAW to HEIC Pro](https://appshunter.io/ios/app/raw-to-heic-pro/id6780517677) | — | Free | Photo & Video |

## Related topics

[hdr to sdr](https://appshunter.io/ios/topics/hdr-to-sdr) · [heif to](https://appshunter.io/ios/topics/heif-to)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-02.*