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Dev.to
7/1/2026
The original title is: "Merge, split, and watermark PDFs from your app with one API (no native libraries)"

The original title is: "Merge, split, and watermark PDFs from your app with one API (no native libraries)"

Original: Merge, split, and watermark PDFs from your app with one API (no native libraries)

Short summary

The PDF Toolkit API provides merge, split, rotate, watermark, and image-to-PDF operations via HTTP without native library dependencies. Available on RapidAPI with free tier (100 req/day), copy-paste examples in cURL and Node.js, and tradeoff guidance vs. alternatives like pdf-lib. Designed for serverless and locked-down PaaS environments.

  • •6 stateless endpoints: merge, split, rotate, watermark, info, images-to-pdf
  • •Free tier plus affordable pay-as-you-go; no binary dependencies to manage
  • •Optimized for serverless/edge where native PDF libraries are impractical

Generated with AI, which can make mistakes.

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