Aivoryx PDF Tools

Compress PDF to 1MB — Free & Online

A 1MB cap shows up often enough on upload forms and portals that it's worth its own dedicated tool rather than fiddling with a generic quality slider until it fits. This page automatically finds the highest image quality that keeps your PDF under 1MB, recompressing its embedded JPEG images entirely in your browser. Drop in your file, and download a version sized to fit — no account, no upload, no manual trial and error.

Frequently asked questions

Why 1MB specifically?
It's a common upload cap on portals, online forms, and some file-storage integrations that are stricter than typical email limits but more forgiving than the 100KB caps some ID/document uploaders use.
Will this definitely get my file under 1MB?
It will if there's enough recompressible image content — this tool automatically searches for the highest JPEG quality that still fits under 1MB. A mostly-text PDF, or one with little embedded image data, may not have much room to shrink, and the result tells you honestly if the target wasn't reached.
What actually gets compressed?
JPEG images embedded in the PDF are recompressed at a lower quality. Text, fonts, and vector graphics are untouched — this is about shrinking photos and scans, not altering the document's content.
Are my files uploaded anywhere?
No. Compression happens entirely in your browser in a background thread; your file never leaves your device.

Need a different target? Compress to 100KB · Compress for email · or use the full Compress PDF tool with a manual quality slider.