XHDR rebuilds an ordinary photo, avatar or clip as a genuine HDR file. On an iPhone, iPad or Mac the highlights climb past normal white — so your picture stops being another grey square in the scroll and starts being the brightest thing on the screen.
Loading HDR frames — 1 of 4
Each one takes a file in and hands a brighter file back. Pick the shape of the thing you are trying to post.
The brightest avatar in the timeline
Drop in a photo, choose how hard it should burn, and walk away with a 400 × 400 avatar whose highlights climb past SDR white the moment X renders it on an HDR screen.
400 × 400 PNG9 glow levelsCrop includedOpenPosts that outshine the feed around them
The same treatment at full resolution, for the pictures you actually post. Skies, neon, chrome and skin highlights keep their detail while the bright end lifts clear of everything else on the page.
Full resolutionTunable highlight roll-offUp to 10 MBOpenReels that stop a thumb mid-scroll
Convert a clip into an HDR-tagged file that Instagram, Facebook and TikTok will play back at real display brightness — the trick advertisers use to buy attention without buying impressions.
MP4 in, MP4 outReels + Shorts safeAudio untouchedOpenExactly 400 × 400, cropped where you want it
X quietly re-encodes anything that is not the right size. Frame your crop, snap it to 400 × 400 and add an optional gradient ring — all of it in the browser, so the file never leaves your machine.
Runs offlineNo uploadOptional ringOpenOne file, two completely different pictures
The kakushie trick: a PNG that shows one image as a timeline thumbnail and something else entirely once somebody taps it. Paint the mask by hand or just describe what to hide.
Kakushie PNGBrush or prompt maskingEncoded client-sideOpenA photo, an avatar or a clip. Nothing to install, no account, and the tools that can run entirely in your browser do.
Your image is re-encoded with a wide-gamut profile and a luminance curve that tells the display to push highlights beyond normal white.
Download and upload as usual. On any HDR-capable screen your picture lights up while the rest of the feed stays flat.
Every iPhone since the XS, every recent iPad, and every MacBook Pro and Pro Display since 2021 can drive highlights well past SDR white. What differs is how much each app lets through — so we tested them.
It takes one upload and one slider. Everything else is already built.
