https://justapi.tech/blog/ Utility APIs for PDF compression, image optimization and JSON to Excel. Pay per call from prepaid credit, with no charge when a call fails or does not help. en https://justapi.tech/blog/ https://justapi.tech/blog/ Notes on how PDF and image compression actually work, what goes wrong in file pipelines, and what we learned building a pay-per-call API platform. Wed, 07 Oct 2026 16:52:06 GMT