Tutorials

PDF to Image PHP

How to Send "Embedded" PDF Invoice Previews in Emails (using Images)

Learn how to embed PDF invoices directly in HTML emails by converting the first page to an image. Since email clients don't support embedded PDFs, this technique uses the aPDF.io API to create visual invoice previews that increase engagement and trust with your customers.

Create PDF Go

Generate PDF Event Tickets with QR Codes in A6 Format using Go

Learn how to generate A6-sized event tickets with embedded QR codes using Go. This tutorial focuses on small-format PDFs (tickets, badges, labels) using CSS print media and the aPDF.io API. Perfect for event management systems, concerts, and conferences where scanning and compact printing are essential.

Rotate Pages Python

Fix Sideways PDF Scans: Auto-Rotate Pages with Python

Learn how to automatically fix sideways or upside-down PDF pages from mobile uploads. Using Python and the aPDF.io Rotate API, you can detect and correct orientation issues in scanned documents, making them ready for review workflows.

PDF Underlay Letterhead Ruby

Add Company Letterhead to Existing PDFs

Learn how to retrofit company branding onto legacy PDF reports by sliding a letterhead design behind the existing content. Using Ruby and the aPDF.io Underlay API, you can batch-process thousands of documents without regenerating them.

Delete Pages Node.js

Automatically Deleting Sensitive Pages from PDFs

Learn how to automatically remove Terms & Conditions, internal notes, or other sensitive pages from PDFs before sharing with third parties. Using Node.js and the aPDF.io Delete Pages API, you can batch-process documents and strip confidential information in seconds.

Create PDF PHP HTML

Dynamic Certificate Generation for Online Courses (LMS)

Learn how to dynamically generate professional PDF certificates for online course platforms using PHP. Design certificates with HTML/CSS, use landscape orientation, and automatically generate them when students complete courses.

PDF Password JavaScript

Batch Password Protect PDFs for GDPR Compliance

This tutorial shows how to automatically password-protect sensitive documents like payslips and medical records before emailing. Using JavaScript and the aPDF.io Security API, you can batch-process documents with user-specific passwords for GDPR compliance.

Search PDF Python

Building a "Search Inside PDF" Feature for Your Web App

This tutorial shows how to build a PDF search feature using Python and the aPDF.io Search API. Find specific terms, get page numbers and context lines, and optionally use regex patterns for advanced matching. Includes a Flask web interface example.

Compress PDF AWS S3 Java

Reduce AWS S3 Costs by Automating PDF Compression

This tutorial shows how to cut AWS S3 storage costs by compressing PDFs before storing them. Using Java and the aPDF.io Compress API, developers can achieve up to 90% file size reduction on image-heavy PDFs, directly translating into lower storage bills.

PDF Watermark Ruby

Automate PDF Watermarking: Add Logos to Documents in Bulk

This tutorial explains how to automate PDF watermarking using Ruby and the aPDF.io Overlay API. By layering a transparent PDF onto original documents, developers can bulk-process files and use parameters to target specific page ranges (e.g., skipping cover pages).

Extract Text LLM Python

Extract PDF Text for RAG Pipelines & LLMs with Python

This tutorial explains how to extract clean text from PDFs for RAG pipelines using the aPDF.io API in Python. It demonstrates replacing messy local libraries with an API that returns structured JSON, allowing developers to easily feed high-quality document data into OpenAI or vector databases.

Split PDF Node.js Go

Splitting Bulk PDF Files: How to Separate Invoices & Payslips

The tutorial explains how to separate bulk PDF files into individual documents using the aPDF.io Split API with JavaScript or Go. By utilizing the pages parameter (e.g., n1 for single pages), developers can automatically "burst" large batches, such as invoices or payslips, into separate, downloadable files.

Extract Pages PHP

Building a Document Previewer: Extract PDF First Page as a Thumbnail

Learn how to build a fast PDF previewer for Document Management Systems using PHP. Extract only the first page as a lightweight thumbnail preview without forcing users to download the entire 50MB file. Perfect for improving DMS user experience and reducing bandwidth.

Merge PDF PHP Node.js

How to Merge Multiple PDF Reports into a Single File (Node.js & PHP)

This tutorial explains how to combine multiple PDF files into a single document using the aPDF.io Merge API with Node.js or PHP. By sending file URLs to the API, developers can avoid server memory issues and easily handle advanced tasks, such as excluding cover pages by specifying page ranges.

Create PDF Invoice Python

Build an Automated Invoice Generator using HTML & Python

The tutorial explains how to build a Python invoice generator by using Jinja2 to merge data into standard HTML/CSS templates. Instead of manually coding complex PDF layouts, the script sends the rendered HTML to the aPDF.io API, which instantly converts it into a professional, downloadable PDF.