Nitro PDF Pro 13.3.1 — macOS

You have a scanned contract that needs a signature, a few typos fixed, and a clean copy sent back. Nitro PDF Pro 13.3.1 for Mac handles that without switching between apps. Here is one realistic workflow from start to finish.

Edit a scanned contract, sign it, and export

1. Run OCR on the scan. Open the PDF, go to the OCR tool, and let it recognize the text. The document becomes searchable and editable.
2. Fix typos and add text. Use the Edit PDF tool to click on any text block. Type corrections, adjust font size or color, and move elements around.
3. Insert your signature. Open the Fill & Sign panel. Create a new signature by drawing, typing, or using an image of your handwritten one. Place it on the signature line.
4. Add a redaction if needed. If the contract contains sensitive numbers, use the redact tool to black them out permanently.
5. Export and send. Save the edited PDF, or export to Word if the recipient needs to make further edits. Done.

That workflow covers the core of what the app does. For recurring tasks like processing invoices or contracts, you can set up batch operations and apply the same steps to multiple files at once. The interface stays straightforward, which matters when you are under a deadline.

Set default font and size before editing

Before you start editing documents, a few settings adjustments make the app work better for everyday use. Open Preferences from the Nitro menu and look at these:

• Default font and size. If you mostly work with contracts in 12-point Times New Roman, set that as the default for new text blocks. It saves changing it every time.
• Units of measurement. Switch between inches, centimeters, or points depending on your document type. Builders and architects often want measurements in feet and inches; office documents usually work fine with inches.
• Auto-save interval. Set it to every five minutes if you tend to forget saving. The app saves changes to the same file, so you do not end up with dozens of backup copies.
• OCR language. If you process documents in English only, leave the default. If you occasionally get bilingual PDFs, add the second language to the OCR dictionary for better accuracy.
• Display resolution. The app works at 1280x800 and above, but if you have a high-resolution display, check that the UI scaling looks comfortable. Adjust in system display settings if needed.

These are small changes, but they keep you from fiddling with the same options every time you open a file.

Process signed agreements in batches with tabs

Here is what an average afternoon looks like when I have a stack of signed agreements to process.

I start by opening Nitro and dragging in the first batch of scanned PDFs. The app opens them in separate tabs, which is cleaner than having multiple windows. I select all the files in the sidebar and run OCR on the whole batch. The progress bar shows each file being processed, and I can keep working on something else while it runs.

Once OCR finishes, I go through each document. The first one has a few typos in the client name and date. I click the Edit PDF button, click on the misspelled text, and type the correction. The font stays the same, and the alignment does not shift. I move on to the second document, which needs a signature. I open the Fill & Sign panel, draw my signature with the trackpad, and place it on the line. The signature looks clean and does not bleed into nearby text.

Next, I need to redact a bank account number from three of the files. I highlight the number, apply the redaction, and confirm. The text is gone permanently, and the area turns black. No way to undo it, so I double-check before confirming.

Finally, I export all five documents to Word so the legal team can add their own notes. I select the files in the tab bar, choose Export to Word from the File menu, and pick a folder. The app converts each one and preserves the formatting, including the signature I added. The whole session takes about twenty minutes for a dozen documents.

Works on Mojave and later, Intel and Apple Silicon

Will it work on my older Mac?
Nitro PDF Pro runs on macOS 10.14 Mojave and later. It supports both Intel and Apple Silicon Macs, so it works on older MacBooks from 2018 and the newer M-series machines. You need at least 1 GB of RAM and about 2 GB of free disk space for the installation and temporary files.

Can it edit scanned documents without making a mess?
Yes, but only after you run OCR on them. The scanned image becomes searchable text that you can edit like any other PDF text. The accuracy depends on the scan quality and the font, but for clean scans of typed documents, it works well. Handwriting is not recognized as editable text.

Does it handle fillable forms from other applications?
It opens and fills standard PDF forms created in Acrobat or other editors. You can save the filled form as a flat PDF so the recipient cannot change your entries. You can also create your own fillable forms from scratch, with text fields, checkboxes, and dropdown menus.

What about exporting to Microsoft Office?
Export works to Word, Excel, and PowerPoint. The formatting carries over reasonably well, especially for text documents. Complex layouts with multiple columns or embedded images may need minor adjustments after export. For most office documents, the conversion is clean enough to send directly.

Is it a one-time install?
The installation is a straightforward drag to the Applications folder after you run the Gatekeeper bypass in Terminal.

Can I process multiple files at once?
Batch processing is built in. You can apply OCR, export, or convert to multiple files in one operation. Select the files, choose the action, and let the app run through the list. It is helpful when you have a folder of invoices or receipts to process.

• macOS 10.14 Mojave or later
• Intel or Apple Silicon Mac
• 1 GB RAM
• Up to 2 GB disk space
• Display resolution at least 1280x800