HoloHDR ✨
HoloHDR helps brighten and tune images before you share them. Open a photo, try the wand or sliders, compare it with the original, and export the version you like.
Why It Exists
Some bright, colorful images become dull, dark, or flat after upload. This tool gives you a quick way to lift shadows, protect highlights, keep color alive, and make an HDR-style export without needing a full editing app.
I wanted a simpler way to play around with HDR settings on a phone, so I built HoloHDR as a small static web app.
Privacy First
Your image stays on your device. HoloHDR does not upload your photos, exports, slider settings, saved presets, or editing history to a server. The page only downloads the app itself.
There is no account, no sign-in, no analytics, no tracking pixels, no ads, no cookies, no data mining, no subscriptions, no micropayments, and no paywall. Nothing is sold because nothing is collected.
Local Storage
Your browser may save the last image and your presets on this device so refresh works and your presets remain available. That storage stays in your browser and can be cleared by you at any time.
Links
Credits And Licenses
Ultra HDR JPEG export uses a browser WebAssembly build based on open-ultrahdr-wasm, built from Google's libultrahdr. The vendored Ultra HDR code follows the upstream Apache-2.0 or MIT licensing noted by that project.
HoloHDR itself is a static web app. Its source and deployment files are available in the public GitHub repository linked above.