(Assumes you already installed the official .deb/.rpm or downloaded binary from the vendor.)

If you cannot afford Master PDF Editor, do not risk malware. Use these native Linux tools instead:

| Tool | Can Edit Text? | Can OCR? | License | | :--- | :--- | :--- | :--- | | LibreOffice Draw | Yes (via import) | No | Free (Open Source) | | Okular (with Poppler) | Limited annotations only | No | Free (Open Source) | | PDF Escape (Web) | Yes | No (Web version) | Freemium | | Xournal++ | Yes (for notes/annotations) | No | Free (Open Source) |

Go to the official CodeIndustry store: code-industry.net/masterpdfeditor/

A legitimate license removes all watermarks and unlocks: