SelectPDF Review: Is It The Right File Converter Software For Your Team?

The SelectPdf Online REST API is a cloud-hosted service that converts HTML to PDF — and performs related PDF operations — over plain HTTP, without installing any library or managing a rendering engine yourself. Conversions run on SelectPdf's servers; you send a request with your API key and receive the result back. It's the hosted counterpart to the local SelectPdf libraries, trading on-premise control for zero-install convenience and easy scaling, which makes it ideal when you can't run native binaries. HTML to PDF API POST a URL or a raw HTML string to https://selectpdf.com/api2/convert/ together with your API key, and the service returns the generated PDF. Every request requires a key parameter tied to your account. A free tier is available with a monthly conversion limit; paid plans raise the quota. The converter exposes rich options: page size and orientation, margins, custom headers and footers, page numbers, viewport width, JavaScript execution, conversion delay, secure (HTTPS) page handling, and watermarks — all set through request parameters. PDF Merge API The merge endpoint (https://selectpdf.com/api2/pdfmerge/) combines several PDF documents into a single file. You can supply the inputs either as uploaded files in a multipart request or as remote URLs pointing to existing PDFs, and the service stitches them together in the order provided. It's useful for assembling cover pages, generated content, and appendices into one deliverable, or for batch-concatenating reports. The same API-key authentication and quota model applies, and the response is the merged PDF stream. PDF to Text API The extraction endpoint (https://selectpdf.com/api2/pdftotext/) reads a PDF and returns its textual content. Submit a PDF as an upload or by URL and receive the extracted text, which is handy for indexing, search, full-text analysis, or feeding document content into downstream processing. SelectPdf also supports a text-search variant that locates specific strings within a document, returning match positions rather than the full text. Client libraries Official wrappers exist for C#/.NET, Java, PHP, Python, Ruby, and Node.js, plus plain cURL/REST for any other language, so you can integrate from virtually any stack. Why use it The REST API is stateless and scalable: no local Chromium, no DLLs, no server maintenance. Each call is self-contained and authenticated by key, letting you convert, merge, and extract on demand while SelectPdf handles the heavy rendering and processing infrastructure behind a simple, consistent HTTP interface.