StackTools

About

StackPDF and StackImage provide a free, private alternative to conventional upload-based document and image suites. All thirty-four PDF tools for merging, splitting, compressing, converting, OCR, redaction, signing, and protection, plus eighteen image tools for compression, conversion including HEIC, cropping, background removal, and upscaling operate directly within your browser. No account is required and your files never leave your device.