SendShrink makes oversized photos fit real upload limits. The free browser tool checks or compresses a JPEG, PNG, or WebP locally with no account or upload. The iPhone app adds Photos-first batches, combined size budgets, saved recipes, and native save/share while keeping originals untouched. A ChatGPT/MCP version handles one image interactively. Output is best effort: a destination may also enforce dimensions, format, or metadata.