TinyJPG - Compress JPEG images with perfect quality and file size

PlutoPDF - A URL to PDF converter wrapped behind a simple API.

Promo Instant Image Resizer - Automatically optimize images for web & social media (free!)

Pdf.to - Convert PDF to Word, Excel, JPG, & from. Also compress PDF

Compressor - Compressor adds power and flexibility to Final Cut Pro X export.

VancePDF - As an AI OCR-driven PDF solution provider, VancePDF offers high-quality PDF processing services online.