PDF API for Developers — Free REST Endpoints

Free PDF API for developers. Integrate compress, merge, convert, OCR, and AI PDF tools into your app with simple REST endpoints. No credit card required.

About Developers

PDF AI Tools' developer hub provides everything you need to integrate professional PDF processing into your application. Browse the API reference, download SDKs, run interactive examples in the playground, and join the developer community.

Comprehensive docs written by developers for developers — with runnable code examples in six languages, a live sandbox, and a Slack community for fast answers.

How to Use PDF API for Developers — Free REST Endpoints

  1. Step 1: Browse the API reference for the endpoint you need
  2. Step 2: Copy the code example for your language
  3. Step 3: Test in the playground with your own files
  4. Step 4: Integrate into your codebase and deploy

Key Features

How We Compare

Compared to desktop alternatives like Adobe Acrobat Pro (starting at $19.99/month), Smallpdf ($12/month for unlimited), or iLovePDF ($9/month Premium), PDF AI Tools delivers comparable quality at $0 for the core feature set. We skip the subscription friction by processing most operations directly in your browser with WebAssembly — no server infrastructure costs to pass on to users. Our AI features (summarization, chat, OCR) use a pay-as-you-go backend that keeps your total cost well under $5/month even for power users.

Frequently Asked Questions

Where do I report bugs?

Open an issue on our public GitHub repo or email [email protected].

Is the OpenAPI spec machine-readable?

Yes — download it as YAML or JSON from the docs homepage.

Do you have a Postman collection?

Yes — import the collection from the developer hub to start making calls in minutes.

Can I request new endpoints?

Yes — upvote or create a feature request in the GitHub discussions board.

Who Uses This Tool