SDR JPEG
Ultra HDR
Sunlit storefront and hard shadow edge
Watch the sunlit wall and window reflections brighten. The Provia colors stay familiar.
For Fujifilm X100 & Ricoh GR · Mac
Your JPEG has the look. HDR adds the light.
SDR can only show so much. Add brighter HDR highlights to your finished JPEG using its matching RAW. Keep your look. No regrading.
Real display HDR. Not the tone-mapped “HDR look.”
- Local processing · No account
- macOS 14+ · Apple silicon
Live Ultra HDRThe proof
Same photograph.
Brighter highlights.
Look at the sunlight and reflections. HDR adds light, not a new filter.
HDR display checkNot sure whether you are seeing real HDR?
Use a current Safari or Chrome browser with an HDR-capable display. The TEST text and brightest gradients below should glow beyond the gray base. If you don't see that extra light, your setup may be showing the SDR version.
HDR brightness also depends on your display settings and available brightness. This pattern is a visual check, not an automatic HDR detector.
For years, photographers graded for print or SDR screens. HDR displays offer another way to share that work—with brighter highlights, without starting the edit again.
Every Ultra HDR export also contains a standard SDR JPEG for viewers that don't support HDR.
How it works
Select. Click. Done.
Your camera JPEG supplies the look. Its matching RAW supplies the extra light.
Select
Choose a folder of matching RAW+JPEG pairs from your Fujifilm X100 or Ricoh GR.
Click
Choose your photos and click Process. Start with the default HDR strength, or adjust it to taste.
Done
Export your HDR photos. Your originals stay untouched.
Designed first for Fujifilm X100 series and Ricoh GR series files. Other camera systems may work, but aren't officially supported—try Basic before buying Plus.
More to see
Different scenes.
Your signature look.
Color or monochrome, the brightest parts of the scene tell the story. Not seeing a difference?
SDR JPEG
Ultra HDR
Window-lit woodshop portrait
Brighter window light, the same deep shadows and Acros character.
SDR JPEG
Ultra HDR
Cathedral aisle and vaulted light
Light fills the ceiling and chapel openings while the warm Positive Film look stays intact.
SDR JPEG
Ultra HDR
Downtown steps in monochrome sun
Sunlit concrete and leaves shine brighter. The monochrome contrast is still yours.
Compatibility
Where the extra light shows
- Safari 26+ or Chrome with an HDR display
- Google Photos on recent Android devices
- macOS Preview on an XDR display
Free & Plus
Create HDR for free.
Add finishing tools with Plus.
Start free with Basic. Choose Plus to crop, straighten, and prepare your HDR photos for sharing.
Core HDR workflow
ToneLatch Basic
Free
RAW+JPEG in. Real HDR JPEG out. Everything you need to start is included.
- Ultra HDR JPEG with a built-in SDR fallback
- Native HDR export for compatible viewers
- Batch export for up to 150 matched pairs
- Local processing — no account or uploads
Separate Mac app
ToneLatch Plus
US$9.99 launch price
Already cropped or straightened your JPEG? Plus helps match it to the RAW, then gives you the finishing tools to make it ready to share.
- Everything in Basic, plus RAW+HEIF import
- Crop, straighten, correct perspective, and add borders
- Match JPEGs you have already cropped or rotated
- Ready-sized exports for the web and social posts
FAQ
Before you export.
What files and Mac do I need?
ToneLatch requires macOS 14 or later on a Mac with Apple silicon, plus matching RAW and JPEG files. It is designed first for Fujifilm X100 series and Ricoh GR series workflows. Plus can also import supported HEIF, HEIC, and HIF pairs. Other camera systems are best-effort.
Do my photos leave my Mac?
No. ToneLatch processes photo content locally, requires no account, and does not upload your images for HDR processing. It writes new exports and does not overwrite your source files.
What is the difference between Basic and Plus?
Basic is free and includes Ultra HDR and Native HDR export for batches of already-aligned RAW+JPEG pairs. Plus is a separate paid Mac app that adds an editor, HEIF import, web and social export presets, and geometry-aware matching for JPEGs you already cropped, rotated, or straightened.
What do Ultra HDR and Native HDR mean?
Ultra HDR is a gain-map JPEG: compatible viewers reveal the extra highlight light, while other viewers display its conventional SDR JPEG base. Native HDR is a true HDR file for displays and viewers that read HDR directly. ToneLatch can export either format.
Where does HDR actually show?
HDR needs both an HDR-capable display and a viewer that understands the file. Current Safari and Chrome releases can render HDR images on compatible displays, Google Photos is a reliable option on recent Android devices, and macOS Preview can show ToneLatch output on XDR displays. Support still varies by device and software.
What scenes work best?
Look for scenes with bright highlights: skies, sunlit windows, reflections, water, snow, stage lights, neon, and hard shadow transitions. Flat, low-contrast scenes will look more subtle because there is less highlight headroom to reveal.
How should I tune the HDR strength?
Start with the default strength, then adjust for the scene. Some photos want a gentle lift; others can carry more highlight punch. Judge the final export in an HDR-capable viewer because an SDR screen only shows the standard JPEG base.
Will this change my camera colors?
ToneLatch uses your JPEG as the visible base and adds HDR highlight information from the matching RAW. It is designed to preserve the film simulation, recipe, image control, or grade you chose rather than replace it with a new RAW rendering.
Does it replace Lightroom?
No. ToneLatch is a focused tool for photographers who already like their JPEG rendering and want HDR highlight light without taking on a full HDR editing workflow.
Will it work with interchangeable-lens cameras?
Sometimes, but they are not the primary support target. Lens correction can be applied differently to a JPEG and its RAW, which may cause edge alignment differences. If you are outside the X100 or GR families, try the free Basic app first.
What about Apple Photos or Preview?
In our testing, macOS Preview on an XDR display renders HDR highlights for ToneLatch output. Apple Photos and other viewers can still vary by OS, device, display, and file type. If a viewer does not render the HDR layer, an Ultra HDR file displays its normal SDR JPEG base.
Your JPEG already has the look
Give it the light.
Start free with ToneLatch Basic. Your first HDR export is only a few clicks away—and your photos stay on your Mac.