Increase or reduce separation between light and dark tones.
or drag and drop images here
Fast async jobs
No install required
Temporary files
Batch uploads
.png, .jpg, .jpeg, .webp
same_as_input, jpg, png, webp
/filter
Submit files to /filter, poll the job endpoint, then download outputs programmatically.
Increase or reduce separation between light and dark tones.
Contrast expands or compresses tonal distance around a midpoint. Higher contrast makes shadows darker and highlights brighter.
Fast per-pixel adjustment.
Positive values increase contrast; negative values flatten the image.
Removes metadata from generated output when supported.
Increasing tonal separation can make color differences feel more intense even without changing saturation directly.
Yes, moderate contrast can make text clearer, but too much can crush gray detail and paper texture.
Increase or reduce separation between light and dark tones.
Use clear source images and preview at final output size before publishing.
Artifacts, excessive processing, color changes, or metadata changes can occur depending on settings and output format.
Metadata behavior depends on export settings. Strip personal metadata for public sharing and preserve ICC profiles when color matters.
Yes. Upload an image, apply the filter through ImageHQ, and download the processed result from the browser.
No. Filter pages are frontend SEO routes that submit to the compact POST /v1/filter API.
MDN Web Docs - browser_documentation
ImageMagick - library_documentation
W3C WAI - standards_body
W3C - official_spec