Why this happens:
When adding text to a PDF, if you set the page number parameter to 0-, the system applies the text to all pages, not just one. This uses credits for every modified page.
To add text to a specific page only, you must explicitly set the page number (e.g.,
0for page1).
Important: Page numbering starts at 0 (zero) → so:
0= page 11= page 22= page 3, etc.
How to fix this issue:
Check the page number parameter in your API request or settings.
If it shows
0-, change it to the specific page number you want (e.g.,0).Re-run the request → it will only apply to that page → you’ll only be charged for that page.
Key tips:
0-= all pages1= only page 2You must specify the page number if you want to limit it to one page
Related API:/pdf/edit/add