HDR Converter

Fix dull Lightroom HDR photos • Convert to ISO 21496-1 format • For Instagram, Threads & Google Photos

Upload HDR Images

Drop your HDR images here

AVIF & JPEG (HDR) files supported • Multiple files supported

Recommended: Keep images ≤1080px for Instagram HDR compatibility

Export Instructions

Best for HDR accuracy
HDR version matches the original, SDR fallback may differ from Lightroom preview
1

Export from Lightroom

  • Format: AVIF
  • Enable HDR Output
  • Color Space: HDR sRGB (Rec. 709)
  • Maximize Compatibility: ❌ Uncheck this
2

Upload and Process

Upload your files above and click "Process All Images"

3

Download Results

Download your Instagram-compatible HDR images

Upload to Instagram

Upload the converted image-hdr_iso.jpg through Instagram's website:

  • Select Original Ratio - don't crop the photo
  • Keep within Instagram's supported sizes:
    • • Square (1:1): 1080 × 1080 px
    • • Landscape (1.91:1): 1080 × 566 px
    • • Portrait (4:5): 1080 × 1350 px
  • Don't apply filters or corrections
Preview shows as SDR during upload, but will display as HDR after completion

No Images Processed Yet

Upload AVIF HDR images and click "Process All Images" to see before/after comparisons here.

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Why Your HDR Photos Look Dull on Instagram

When you export HDR photos from Lightroom as AVIF and upload them to Instagram, Threads, or Google Photos, they often appear washed out or dull. This happens because these platforms require images in the ISO 21496-1 HDR format with proper gain map metadata.

Our free converter transforms your Lightroom HDR exports into Instagram-compatible HDR JPEGs, preserving the full dynamic range and vibrant colors your photos deserve.

HDR Conversion Process

  • Validate HDR content: Checks for 10-bit color depth (AVIF) or gain map metadata (JPEG)
  • Convert to ISO 21496-1: Creates Instagram/Threads compatible HDR JPEG with embedded gain map
  • Optimize dimensions: Warns if image exceeds Instagram's 1080px recommendation
  • Preserve quality: Maintains HDR dynamic range for display on HDR-capable devices
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