Invert PDF Colors
Make any PDF to dark background permanently so it is easier to read at night or in low light without straining your eyes
or drag and drop here
Why Inverted PDF Colours Are Better Than Dark Mode Reading
ToolCompanion's Invert PDF Colors is a game changer for anyone spending long hours on bright white PDF pages. This tool is meant for you if you are a student who is pulling an all-nighter with his lecture notes, a developer who is trying to navigate through dense technical documents or just someone who is trying to escape the relentless strain of the eye.
The difference here is that regular PDF viewers just switch dark modes on and off without changing anything permanently, but this new technique actually inverts the pixel colour data of your PDFs. This way, when you convert PDF dark mode via our service, the output document will open as it should on any device or reader, without any adjustment to display settings needed.
Plus, our hover preview feature makes it easy for users to compare the original and inverted versions before downloading their newly created files. With just one click, you can invert colours of your PDFs forever and easily ensure cross platform compatibility.
Key Features
Permanent Inversion
Changes are saved at pixel level.
Hover Preview
Compare original and inverted files side by side instantly.
Scan-Friendly Files
Effortlessly reverse colour of PDF documents regardless of format.
Works Everywhere
Dark output renders well on all readers and devices.
Local Processing
All operations are performed in the browser for better privacy.
How to Use
Upload PDF
Just drag and drop your PDF file or click to upload on our website.
Preview & compare
Our tool will immediately display a preview of inverted colours. Hover over the thumbnail to see a side-by-side comparison of the original and the inverted version.
Get your dark mode download
If you are satisfied with the inverted colours, click on "Invert Colours" to permanently process the pixel data. Then download your new dark mode PDF for free.
Frequently Asked Questions
Q: How do I convert a PDF to dark mode permanently?
Upload your PDF on ToolCompanion, see the preview with inverted colours, click on Invert Colours and download the output. The dark background is saved in the file itself forever.
Q: Why does my PDF look white again after I close it even in dark mode?
Most PDF readers only do dark mode as a display setting. It doesn’t change the file. This tool permanently inverts the colour data inside the PDF, so it opens dark everywhere.
Q: Will inverting colors make text hard to read in my PDF?
For standard white page PDFs with black text the result is very readable white text on a black background. Use the hover preview to check legibility for your particular file before downloading.
Q: Does inverting a PDF affect images inside it?
Yes. Images are also colour inverted during the process. Make sure to preview the inverted version before downloading to ensure the content of the image is still apparent.
Q: Can I invert colors on a scanned PDF?
Yes. The tool works on scanned documents and image based PDFs as well as normal text PDFs because it processes pixel data.
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