Invert colours: common problems and how to fix them
Resolve photos look like negatives and search and links stop working. Understand the limits before retrying.
Open Invert colours →Follow these steps
- Choose the supported source file or files from your device.
- Review the source pages before changing their colors.
- Export and inspect photographs, diagrams and text contrast.
Photos look like negatives
That is an expected effect of colour inversion. Use a reader theme when you only want a darker interface around unchanged pages.
Search and links stop working
The output is image-based. Retain the original for interactive reading or run a separate OCR workflow when a text layer is necessary.
Check whether this is the right operation
Inversion changes page colours and rebuilds them as images. It is different from turning on a reader’s dark theme, which can leave original document bytes intact.
A more useful retry
For personal night reading, inspect photographs and highlighted regions as well as text. Inverting a rendered page changes all pixels, so it can make some illustrations less natural or less legible.
Check the result
This modifies the document, unlike the website dark theme. Rasterization removes text search, links and forms.
Keep the original. When this task produces a file, reopen the download in the application where you will use it and inspect the affected pages. An illustration explains the operation; it is not a recorded processing test.
Practical tips
- Test a mixed page with both text and pictures. Inversion can make photographs unnatural and does not guarantee a comfortable contrast for every colour combination.
- That is an expected effect of colour inversion. Use a reader theme when you only want a darker interface around unchanged pages.
- The output is image-based. Retain the original for interactive reading or run a separate OCR workflow when a text layer is necessary.
Questions
Photos look like negatives?
That is an expected effect of colour inversion. Use a reader theme when you only want a darker interface around unchanged pages.
Search and links stop working?
The output is image-based. Retain the original for interactive reading or run a separate OCR workflow when a text layer is necessary.
What is this tool useful for?
Create an inverted page appearance for a specific document.
What should I check in the result?
This modifies the document, unlike the website dark theme. Rasterization removes text search, links and forms.