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Replace Text in PDF with Python REST API

This short tutorial shows how to PDF Python developers can replace text in a PDF document using the Aspose PDF Cloud REST API. You’ll learn to locate words by exact match or regular expression and apply the replacement on a single page or across the entire file. For more details about the PDF format, see the PDF file info page.

Prerequisite

  • Create an API account and obtain your Client Id and Client Secret (see the guide on creating Aspose Cloud API credentials).
  • Install the Aspose.PDF Cloud SDK for Python (pip install aspose-pdf-cloud).
  • Set up a Python project and add the SDK to your environment.

Steps to Replace Text in PDF Online with Python REST Interface

  1. Configure the PdfApi object with your client credentials.
  2. Upload the source PDF file to Aspose Cloud storage.
  3. Build a list of TextReplace objects, each containing an old string and its replacement.
  4. Create a TextReplaceListRequest instance, passing the list of TextReplace objects.
  5. Call PostDocumentTextReplace to replace all occurrences of the old strings.
  6. Download the resulting PDF file after a successful response.

The steps above outline how to find and replace words in a PDF using the Python REST API. First, instantiate PdfApi, then upload the document, prepare the replacement pairs, and finally invoke PostDocumentTextReplace. The modified PDF can be saved locally or kept in cloud storage.

Code to Find and Replace Text in PDF with Python‑based API

The sample demonstrates replacing text in a PDF via the REST interface. You can supply a simple list of strings or a regular‑expression pattern to locate text throughout the document. To replace text on a specific page, use the PostPageTextReplace method and provide the target page number.

If you need to add new pages to a PDF, see the related article Add new page in PDF with Python REST API.

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