Signature Enhancer - Improve Quality Online

Enhance signature clarity instantly. Sharpen blurry signatures, adjust contrast, remove noise. No uploads, works offline in your browser.

Drop signature image here

…or click to choose (PNG, JPG, WebP, HEIC)

Preview

Live preview

Original signature will appear here

Enhanced signature will appear here

Before

After

Enhancement Controls

Quick presets

Brightness 0

Contrast 0

Sharpness 0

Denoise 0

Saturation 0

Gamma 1.0

Auto-adjust levels

Remove white background

Pro tip: For scanned signatures with poor quality, try the Auto Enhance preset first, then fine-tune with manual adjustments. Use "Darken Ink" for faded signatures.

Remove Signature Background - Free Onlin…

View all Signature editors →

Frequently Asked Questions

Enhancement can improve moderately blurry signatures by increasing sharpness and contrast. However, severely blurry signatures with lost detail cannot be fully recovered. Best results come from decent-quality source images.

Enhancements improve clarity and readability but should maintain the signature's original characteristics. Use subtle adjustments to avoid over-processing. The split-view preview helps compare changes.

Brightness makes the entire image lighter or darker. Contrast increases the difference between light and dark areas. For faded signatures, increase contrast to make the ink darker against the background.

Use denoise when your signature has visible grain, specks, or noise from scanning or low-light photography. Higher values smooth the image but may reduce fine details.

Yes. Check 'Remove white background' to create a transparent PNG while applying other enhancements. This is useful for creating signatures ready for document insertion.

The enhanced image represents your signature with improved clarity. However, legal requirements for signatures vary by jurisdiction. Consult local regulations for digital signature requirements.

Auto Enhance applies balanced brightness, contrast, and sharpness adjustments optimized for typical signature images. It's a good starting point before fine-tuning individual settings.

Gamma controls midtone brightness without affecting pure blacks or whites. Increase gamma to lighten shadows. Decrease to darken midtones. Useful for signatures scanned too dark or too light.

Yes, for real-time feedback. Disable live preview only if processing is slow on your device. When disabled, adjustments apply only when you click 'Apply Enhancements'.

Yes. Use the 'Side-by-Side' tab or click 'Compare Before/After' button to see original and enhanced versions simultaneously. This helps evaluate whether enhancements improve the signature.

Related Tools