User manualMac, iPhone, iPad

Open a PDF

1. Choose a tool: Invert, Extract, Compress, or Merge.
2. Click or tap the empty document area to select a PDF. On Mac, you can also drop a file into the input area.
3. Choose the tool’s options and run it. Save the result on Mac, or use Share on iPhone and iPad.

Invert colors

Choose B&W to invert black and white while preserving colors, or Full to invert every color. Select Invert Colors to generate a new PDF.

Merge and extract pages

In Merge mode, add two or more PDFs. Files are combined in the listed order. On Mac, use the up and down arrows to change that order. Use the × beside a file to remove it, then select Merge.

To keep part of a document, switch to Extract Pages, select one PDF, and enter the pages you want. Run extraction to create a separate PDF.

Compress a PDF

Select Quality, Balanced, or Minimum, then run compression. Quality prioritizes detail; Minimum prioritizes file size. Check the preview and the reported size before saving.

Extract text

Select a PDF in Extract, then run text extraction. Use Copy to copy the result.

For scanned pages, enable Enhanced OCR in Settings before extracting.

Settings

Appearance

Choose System, Light, or Dark.

Enhanced OCR

Use text recognition for scanned pages.

Output Folder · Mac

Choose where processed PDFs are saved.

Norkta Pro

Norkta includes 30 free processing uses across all four tools. Successful operations use the allowance; failed operations do not. This allowance does not renew.

Open Settings and select Upgrade for unlimited processing. Choose Monthly, Yearly, or Lifetime. Use Restore Purchases in the Pro window to restore an existing purchase, or Manage Subscription in Settings to manage a subscription.

View pricing ↗

File limits

Each input PDF can be up to 50 MB. A merge can contain up to 20 files and 500 pages in total.

Get help

Email kircerta@gmail.com with your device, the tool you were using, and what happened.