Map a photo’s brightness to a three-colour gradient for a bold graded look — presets or your own colours, on your device.
Gradient map applied on your device — nothing is uploaded
No size limit · files are processed on your device and never uploaded · how it works
Runs in your browser. Files are never uploaded — you can go offline after the page loads.
How to use the Gradient Map
Drop a photo — the editor opens automatically.
Pick a preset or set three colours.
Adjust midpoint and strength, then download.
Easy to use
Drop files, pick options, download. Whole folders at once, no signup, no daily limit.
Best quality
The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.
Private & secure
Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.
Cinematic colour grading with a gradient map
A gradient map replaces each tone in a photo — from the darkest shadows to the brightest highlights — with a colour
sampled from a gradient. It is the classic Photoshop technique behind cinematic grades and bold duotone-plus looks.
Set three colours for shadows, midtones and highlights, or start from a preset like Heatmap, Magma or Ocean.
The midpoint and blend-strength sliders let you go from a subtle tint to a full graphic remap, previewed live and
exported at full resolution — all in your browser, nothing uploaded. For a two-colour version, see the
duotone effect.
Frequently asked questions
What is a gradient map?
It replaces each tone in the image — from darkest to lightest — with a colour sampled from a gradient, the classic Photoshop technique for cinematic colour grading and duotone-plus looks.
Is my photo uploaded?
No — the mapping is computed on a canvas in your browser at full resolution.
Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.
No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
No limits. No file-size cap, no queue, no watermark, no account.
Runs on your CPU. Batches use several cores in parallel; nothing is throttled.