反转颜色

Every pixel is flipped to its complementary value, so photos look like film negatives and brand colors shift (blue turns orange, red turns cyan). The tool suits text-heavy documents where you want light text on a dark page; for brightness or contrast changes without inverting images, use Adjust Colors.

No. Each page is rendered as an image, inverted, and rebuilt as an image-only PDF, so the text layer is gone. If you need searchable text again, run the inverted file through OCR PDF.

Pages are rendered at 1.5x scale, roughly 108 dots per inch. That's sharp on a screen at normal zoom, which is where dark-mode reading happens, but it can look soft if you print the file or zoom in far.

The inverted pages are stored as full-page PNG images instead of text and vector drawings, which often takes more space. For a smaller file, pass the result through Compress PDF.

No. Because the output is a fresh image-based document, interactive elements such as links, form fields, comments, and bookmarks are not carried over. Keep the original if you need them.

Not with this tool; it processes every page. If you only want a few pages inverted, separate them first with Split PDF, invert that part, and merge the pieces back together.

Yes. Scans are already images, so they invert cleanly, and it can rescue a scan captured as a negative or with reversed exposure. Grayscale scans keep their gray levels, just reversed.

No. Rendering and pixel inversion happen on a canvas in your browser, and the new PDF is assembled locally. Nothing leaves your computer, and there's no server queue, so the speed depends only on your device.