Compress PDF to 300KB
Upload your PDF and it compresses toward 300KB automatically — same pages, same layout, just smaller. Everything happens in your browser; your file is never uploaded.
Drag & drop your file here
or click to browse your device
Sizes are estimates from your first page. The result stays a real PDF — same pages, same layout, only smaller.
We adjust quality to land as close as possible. If your target cannot be reached without ruining quality, we will tell you honestly.
Tiny files for messaging and mobile
Messaging apps are where big PDFs go to die: slow uploads, failed sends on patchy connections, and recipients who won't wait. Compressing your PDF to 300KB produces a file that sends instantly over WhatsApp, Telegram, Messenger or plain MMS — and uploads in seconds even on a weak mobile signal.
The trade-off, honestly
300KB is aggressive compression. Expect noticeably softer images and slightly fuzzy fine print on scans; the tool still preserves page size, layout, links and page count, and ordinary text documents remain perfectly readable. Think of 300KB as the "good enough to read on a phone" tier — ideal for sharing, not for archiving or printing.
When 300KB makes sense
Use this target for quick sharing: sending a draft contract for a glance, forwarding a boarding pass or ticket, sharing lecture notes in a study group, or submitting to systems with extremely tight limits. If the document matters long-term, keep your original and share the 300KB copy as the lightweight version.
When not to go this small
Don't use 300KB for anything you'll print, submit officially, or archive — choose the 1MB page for email or the standard Compress PDF tool for a balanced result. And as with every GroPDF tool, the whole process runs locally in your browser: no uploads, no queues, no accounts.
