hdrglow

hdrglow is a free, browser-based tool that converts photos and SVG logos into Ultra HDR files. Designed for creators and social media managers, it allows images to display at higher brightness levels on HDR-capable devices, ensuring content stands out on platforms like Instagram and Threads.

Key Features

• Browser-based processing: No account required, and files are processed locally in your browser for privacy.
• Platform-specific presets: Includes optimized settings for Instagram/Threads Stories and feeds, Skool, Discord, and LinkedIn.
• Gain map technology: Creates files that render with extra brightness on HDR and OLED screens while remaining compatible with standard displays.
• Platform compatibility tracking: Provides detailed, community-reported data on which social platforms support gain maps and which require specific upload methods (e.g., sending as a document).

How it works

Users simply drop an image or SVG logo into the tool. The generator creates an Ultra HDR file that embeds a gain map, allowing the image to "glow" on supported displays. For platforms that re-encode uploads, the tool provides guidance on workarounds, such as sending files as documents on WhatsApp or Telegram to preserve the metadata.