Document Filter API provides features to replace, redact or mask text strings and also to blur or mask images present in a document without impacting its layout or formatting. API shall be very useful for protecting PII data, for identity protection, for protecting gender sensitive information, in GDPR compliance, promoting Gender Diversity or promoting Diversity in general, protecting business intellectual property, protecting trade secrets or for generally protecting sensitive data while still using existing valuable business documents and literature. API could also be useful in rebranding, merger and acquisitions scenarios where plethora of existing business documentation will need rebranding. With image blurring API also helps in saving of storage space & costs needed for files.