Document & PDF Darkener
Darken faint text, lines, and details in your images and PDF documents. Enhance readability and contrast client-side or with server-side Imagick filters.
Loading Document & PDF Darkener...
Document & PDF Darkener
Darken faint, faded, or light text and lines in scanned documents, images, and PDFs. Features include:
- Double Processing Engine: Process documents entirely locally in your browser for 100% privacy, or use on the server Imagick filters for precise level and gamma stretching.
- Adjustable Darkening & Contrast: Fine tune brightness, contrast, and gamma levels to make light gray text and faded pencil markings highly readable.
- Grayscale & Black & White Conversion: Convert color scans into high contrast monochrome documents to remove stains and improve clarity.
- Multi Page PDF & Image Support: Upload scanned PDFs or multiple images (PNG, JPG, WebP) and process them page by-page.
- Instant Export: Re compile your darkened pages back into a clean PDF or download them as a ZIP archive of high contrast PNG images.
Frequently Asked Questions
Is my data safe when using Document & PDF Darkener?
Yes, your data is completely safe. Unlike other online tools, Pixella works entirely in your browser. Your files and text are never uploaded to our servers—they stay on your device.
Are there any limits on file size or usage?
No, there are no limits or hidden fees. You can use Document & PDF Darkener as many times as you like, and process as many files as you need, all for free.
Can I use this tool on my phone?
Yes. Pixella is fully mobile-friendly. It works perfectly on Chrome, Safari, and other mobile browsers on smartphones and tablets.
Do I need to sign up or create an account?
No, you do not need an account. You can use all our tools immediately without giving us your email or creating a password.
Explore Other Tools
Explore more free browser-based productivity tools — no signup required.
WebP Converter
Convert files to WebP or convert WebP images back to JPG and…
CSV/Excel Viewer
View and edit CSV and Excel files in your browser. Sort, filter,…
True Love Calculator
Calculate compatibility between two names using a deterministic cosmic love meter.
HEIC to JPG
Convert iPhone HEIC and HEIF photos to standard JPG or WebP. Batch…
PDF to Image Converter
Convert PDF pages to high-resolution JPEG or PNG files client-side. Download all…
Centimetre to Square Feet Converter
Convert linear centimeters to feet or square centimeters to square feet.