Is adjust colors free?

Yes. SagePDF runs entirely in your browser—no uploads, no signup.

Why isn’t text selectable after export?

Each page is rasterized (drawn as an image) so color math can run on every pixel. That matches how strong color correction works on scanned or complex PDFs.

What do temperature and tint do?

Temperature shifts warm (redder) vs cool (bluer). Tint shifts green vs magenta—useful for correcting scans or photos.

Will large PDFs work?

Yes, but many high-resolution pages take longer and produce larger files. Try a lower page count first if your device feels slow.

Adjust Colors Easy Online

Use SagePDF to adjust colors easy online. Adjust brightness, contrast and saturation. Use SagePDF in your browser—no uploads, no signup, your files stay on your device.

Fine-tune brightness, contrast, saturation, hue, temperature, tint, gamma, and sepia—with a live preview. All processing stays in your browser.

Drop your PDFs here, or click to choose files

Your files never leave your device. All processing happens in your browser.

How to use

Upload PDF

Select a single PDF. Your file is processed only in your browser.

Adjust colors

Use the sliders for brightness, contrast, saturation, hue, temperature, tint, gamma, and sepia. Preview updates in real time; flip pages if your PDF has many pages.

Apply & download

Click Apply color adjustments to process every page, then download. Pages are saved as images inside the PDF (text won’t be selectable).

Frequently asked questions

Invert Colors
Create a dark mode version of your PDF.
PDF Editor
Annotate, highlight and edit PDF documents.
Background Color
Change the background color of a PDF.