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The brightness/contrast feature is not working and colour option freezes nitro

harsh marwah

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harsh marwah

when I try to edit my pdf using nitro v13, the "brightness/contrast" feature doesnt work (you can get it by selecting edit->click on image/page->format tab-> adjust-> brightness/contrast).

Also when i try the "Color-> greyscale" option in the same adjust section, nitro freezes or crashes.
Anyone else facing this issue and can anyone tell me how to fix this.

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  • Official Nitronaut

Hello Harsh,

Thanks for reaching out to us!

So that we can troubleshoot the problem, please provide me with the following:

- A sample file that we can test
- What exact version of Nitro you are using (You can retrieve this information by going to the Help tab> About Nitro Pro.)
- The exact steps you are taking
- A screen shot of what you are seeing or any error message you are receiving

I look forward to your response.

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  • Official Nitronaut


It looks like an image-specific issue.

I copied the same image and re-applied it to the same file. I was able to adjust the brightness and contrast successfully.

I also got an image of the fruits to test the file, I set it to grayscale it it worked fine. 
Here is the screenshot:



I recommend re-creating this file or the image so that you can make the necessary adjustments. 

Please let me know if you have any questions.

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harsh marwah

Actually I was able to adjust these setting (Brightness & contrast) on the same file (multiple files) in earlier version of nitro (v 9). I had to print multiple files from the same source and I used to change these setting to save some ink.
Do you know what might be causing this so I could troubleshoot. 

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