Store PDF files in PostgreSQL BYTEA

PostgreSQL BYTEA Overview

PostgreSQL does not have a native BLOB type; BYTEA (binary string) is the official recommended type for storing binary data like PDFs, supporting up to 1 GB of data.

Step-by-Step Implementation

Method 1: Manual SQL Statements (Primary Method)

1. Create Table

CREATE TABLE pdf_storage (
    id SERIAL PRIMARY KEY,
    pdf_name VARCHAR(255),
    pdf_data BYTEA
);

2. Insert PDF Data

INSERT INTO pdf_storage (pdf_name, pdf_data)
VALUES ('sample.pdf', pg_read_binary_file('/path/to/sample.pdf'));

Method 2: Using DBBlobEditor (Optional Visual Tool)

DBBlobEditor bypasses PostgreSQL’s pg_read_binary_file path restrictions, requires no superuser privileges, and auto-converts PDF files to BYTEA format for storage.

• View PDF stored in PostgreSQL BYTEA field
• Batch import PDF files into PostgreSQL BYTEA
• Batch export PostgreSQL BYTEA to PDF files

PostgreSQL BYTEA Issues & Solutions

• pg_read_binary_file: Requires file to be in PostgreSQL data directory or superuser privileges
• pgAdmin: Use the visual editor to import PDF files to BYTEA columns

Related Guides

• Store PDF in Database Binary Fields
• Store PDF files in DB2 BLOB
• Store PDF files in Oracle BLOB
• Store PDF files in SQL Server VARBINARY
• Store PDF files in MySQL BLOB
• Store PDF files in SQLite BLOB