What you need
Choose one authorised JPEG, PNG, or WebP still image up to 20 MB and 12 million decoded pixels. Animated frames are not processed.
Image Tools / Local studio
Image Exposure Adjuster
Scale decoded RGB values by a selected number of exposure stops, inspect clipping locally, preserve alpha, and export a new image.
Runs locallyNo image upload to Nirmion
Step 1 / Source
Choose one image
Drop your image here
Or browse for a JPEG, PNG, or WebP image that you own or are authorised to edit.
One file · up to 20 MB · maximum 50 megapixelsStep 2 / Output
Image Exposure Adjuster controls
Choose -4 to +4 stops; +1 doubles decoded channel values and -1 halves them before output clamping. Processing stays in this browser tab.
Create the exposure-adjusted imageThe source is not overwritten. Export creates a separate exposure-adjusted image.
Keep this page open until the download begins.01No server upload
The selected image is decoded and re-encoded inside this browser tab.
02Working copy released
After download, the preview URL, decoded bitmap, canvas, and selected source reference are cleared.
03Your download remains
Nirmion cannot remove the finished file from your device or browser download history.
Workflow guide
Use image exposure adjuster with a reversible review path
Each decoded RGB channel is multiplied by two raised to the selected exposure-stop value, then clamped to the output range. Compare the derivative with the untouched source before using it downstream.Social-ready choices
Create a brighter review copy of an underexposed diagram while checking pale labels and highlights for irreversible clipping.
What you receive
Download a separate exposure-adjusted image; the original file on your device remains unchanged.
Decision guide
What image exposure adjuster changes
Each decoded RGB channel is multiplied by two raised to the selected exposure-stop value, then clamped to the output range.
Decoded-pixel exposure scaling cannot recover sensor latitude, reconstruct clipped values, or replace raw-file exposure development. Browser-local processing avoids a Nirmion file upload, but it cannot remove copies stored elsewhere.
W3C Filter Effects Module Level 1Useful checks for image exposure adjuster
- Create a brighter review copy of an underexposed diagram while checking pale labels and highlights for irreversible clipping.
- Create a review derivative while retaining the original for correction, comparison, or a different export.
- Test the operation on representative shadows, midtones, highlights, edges, text, and transparent areas.
Good to know
Important image boundaries
- Why might a PNG not become smaller?
- PNG is lossless and browsers do not expose a quality control for it. Choose WebP or JPEG when reducing file size matters more than exact lossless pixels.
- Are animated images supported?
- No. The workspace accepts still JPEG, PNG, and WebP files. Re-encoding an animated source would otherwise keep only one frame.
- What does clearing the file mean?
- Because processing is local, there is no Nirmion server copy to delete. The tab releases its working references after success; your downloaded output remains on your device.
Questions answered
Frequently asked questions
Does Image Exposure Adjuster upload my image?
No. For supported JPEG, PNG, and WebP inputs, decoding, pixel transformation, canvas rendering, and export run in your current browser tab. Nirmion does not send the selected image to its API for this workflow. The output is a new derivative, while the original file on your device remains unchanged and should be retained for comparison or later editing.
How does Image Exposure Adjuster change pixels?
Each decoded RGB channel is multiplied by two raised to the selected exposure-stop value, then clamped to the output range. Existing alpha values are preserved. The operation does not infer subjects, recover clipped detail, calibrate a display, or develop raw camera data. Inspect fine edges, gradients, text, skin tones, and transparent pixels in the exported file before relying on the result.
What are the practical limits of Image Exposure Adjuster?
Decoded-pixel exposure scaling cannot recover sensor latitude, reconstruct clipped values, or replace raw-file exposure development. The workspace accepts one supported still image up to 20 MB and caps this pixel-intensive operation at 12 million decoded pixels for predictable browser memory use. Output depends on browser decoding and encoding support. Animation, raw development, ICC calibration, layer editing, and batch processing are outside this tool's verified scope.