Make your images shine.
Create, inspect and optimize HDR images without sending your photos to a server.
Local-first processing · No account required
Photo by Fabien TWB on Unsplash, processed locally through our real Superwhite pipeline — the same code Encode runs.
One local pipeline, eight jobs
Inspect
Understand what's inside an image — resolution, color space, and whether it's actually HDR or just tagged that way.
Create
Turn SDR images into HDR-ready images, without guessing at the numbers.
Preview
Compare SDR and HDR side by side before you commit to an export.
Analyze
See luminance and gamut coverage laid out clearly, not buried in a report.
Convert
Move between the formats your pipeline actually supports.
Optimize
Cut file size without losing the highlights you just added.
Validate
Check whether an HDR image is technically valid — not just whether it opens.
Learn
Understand HDR without needing to be an imaging engineer.
Drop an image, see what's inside
Six tools, one local pipeline
Add real HDR headroom to an SDR image.
Open →See exactly what's inside — format, color space, HDR status.
Open →Compare SDR and HDR, side by side or split.
Open →Move between JPEG, PNG, WebP and AVIF.
Open →Resize, recompress, and strip what you don't need.
Open →Run any tool across a whole folder at once.
Open →The before/after above is real output, not a mockup — a real photo run through our actual Superwhite pipeline, the same code the Encode tool runs when you pick that mode. Every processing step in Headroom runs in your browser, using the same math. Read the HDR guide →