Enhance PDF Quality Online Free
Boost the sharpness, contrast, and brightness of a scanned PDF. The tool processes each page individually — the result is visually cleaner and easier to read.
Three steps — and you're done
The entire process takes under a minute. No software to install, no sign-up required.
Upload your scanned PDF
Drag a PDF or click "choose a file". Best results with text scans that have low contrast or a grey background.
Adjust the settings
Select the enhancement intensity. "Standard" suits most scans; "Strong" is for very light or blurry documents.
Download the enhanced PDF
The finished PDF downloads automatically. Text will be sharper, backgrounds whiter.
Secure, fast, and free
Principles we uphold for every tool we build.
Files deleted immediately
Documents are removed from our server as soon as you download the result. We store nothing.
No third-party APIs
Processing happens on our own server — your files are never sent to OpenAI, Google, or Amazon.
No sign-up needed
No account, email, or password required. Upload a file and get your result instantly.
Works on any device
Fully optimised for phones and tablets — runs right in the browser.
Frequently asked questions
Answers about security, file formats, and limitations.