Hey Product Hunt 👋 I built ExcelAPI because I kept solving the same problem over and over. Every project I built needed Excel exports. Invoices, reports, data exports. Each time wrote the same 200 lines of boilerplate code. Install the library, create workbook, add worksheet, style headers, fix column widths, debug date formatting, write buffer to response. Then do it all again in the next project three months later. I finally got frustrated enough to build a proper solution. ExcelAPI is a REST API that handles all Excel file operations via HTTP calls. You send JSON, you get a formatted xlsx file back in under a second. One endpoint. Any language. No library installation. No boilerplate. It also handles parsing Excel files back to JSON, converting PDFs to Excel, and validating sheet structure — all the things I kept needing but kept rebuilding from scratch. Free tier has 50 calls per month. No credit card needed. Happy to answer any questions about how it works, what I used to build it, or anything else. This is my first public launch and I am genuinely excited to hear what you think.

ExcelAPI

Generate and parse Excel files with one API call

Generate and parse Excel files with one API call