Compress PDF to 1MB
Automatically steps quality down until your PDF fits under 1MB - free and entirely in your browser.
1MB is the everyday target: it keeps attachments light enough for slow connections, fits the per-file caps on many web forms, and stays far below the point where email providers start complaining. Reports, presentations exported to PDF, and scanned paperwork all tend to land at several megabytes, mostly from oversized images. This tool trims that image weight in passes until the file slips under 1MB, entirely on your device.
Drop a PDF here
or click to browse. Shrink scanned documents and image-heavy PDFs - right in your browser.
Frequently asked questions
Why is 1MB a common limit for PDF uploads and email?
Many form builders and document portals set per-file caps at 1MB to keep storage and processing predictable, and small attachments send reliably even on slow or mobile connections. Staying under 1MB also leaves room to attach several files to one email without hitting the mailbox ceiling.
Will quality noticeably drop when compressing to 1MB?
Rarely. A 1MB budget is generous, so the tool typically stops at a gentle pass that re-encodes oversized images while text stays selectable and sharp. Only very long or image-dense documents need the deeper passes where pages are rasterized and quality visibly softens.
Other size targets
Compress to 100KB
Shrink a PDF to 100KB or less for email systems and government portals. Automatic size targeting, processed entirely in your browser.
Compress to 200KB
Compress a PDF to 200KB or less for job applications and exam registrations. Automatic quality stepping - free and entirely in your browser.
Compress PDF
Balanced and Maximum modes with full control