PDF Contrast Enhancer - Make Text Darker
Enhance PDF contrast to make faint text darker and more readable. Fix washed-out scanned documents instantly.
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Maximum file size: 10MB
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What is This Tool?
Enhance PDF contrast to make faint text darker and more readable. This tool fixes washed-out scans, faded documents, and low-contrast PDFs. Perfect for improving readability and print quality.
Low-contrast PDFs from old scanners, faded originals, or poor settings have faint text that's hard to read and prints poorly. Our tool uses histogram equalization to boost text darkness while keeping backgrounds light.
How to Use
Upload Faded PDF - Upload documents with faint text. All processing in browser for privacy.
Adjust Enhancement - Use Contrast Level slider for overall enhancement. Darkness Boost specifically targets text. Start at 50%.
Process & Download - Tool applies histogram equalization, boosts black levels, reduces midtones, enhances contrast. Download instantly.
Frequently Asked Questions
Can this fix very faded documents?
Yes! Even very faint text can be enhanced to readable levels. Use 70-80% darkness boost for severe fading.
Will backgrounds become darker?
No. Smart algorithms boost text while keeping backgrounds light for good contrast.
Does this work on color PDFs?
Yes! Enhances contrast while preserving color information.
Is my data secure?
Yes. All processing in browser.
Will this help with printing?
Absolutely! Enhanced contrast ensures clear, bold printouts.
What's the file size limit?
Supports PDFs up to 10MB.