Switch the interface if it helps
Choose العربية in the editor's language menu for Arabic controls. The language of the interface does not automatically fix every text box in a document. Open your PDF and check whether its Arabic lines are selectable with Edit text.
Choose a font with Arabic characters
For replacement or added text, try Noto Naskh Arabic, Noto Sans Arabic, Cairo, or Amiri. These fonts are bundled with the website. A Latin-only font can show missing characters or use an unexpected fallback. Matching the original typeface exactly is not guaranteed.
Use right-to-left direction, then alignment
Set the text direction to RTL and choose the alignment that fits the original line. Right alignment alone does not set writing direction. Test a short phrase first, such as “موعد الاجتماع الساعة 10:30”, and inspect the number and colon as well as the Arabic letters.
Give vowels and longer text enough space
Arabic diacritics can extend above or below a letter. Increase box height if marks appear cut off, and allow room when replacing a short phrase with a longer one. Use Fit text and check the preview. For lines that mix English, Arabic, dates, or parentheses, proofread the full line.
Handle scans and unusual PDFs
If you cannot select the original text, the page may be scanned or its text encoding may be unusual. Use Cover + Add text for a small visual correction. The editor does not recognize scanned text or convert a PDF to Word. Test one page before doing a long document.
Reopen the downloaded file
Export and inspect the PDF at a readable zoom. Edited pages become images, preserving the rendered appearance but losing searchable text and active form fields on those pages. Check letter joining, marks, punctuation, and line wrapping before sharing.