Compress PDF to 4MB
E-filing system capped at 4MB per document? Fit long filings under the limit at strong quality — privately, in your browser.
Click to choose a PDF file or drag & drop here
Target is preset to 4 MB — adjustable below✅ Your compressed PDF is ready!
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The 4MB cap on filings and submissions
Court e-filing platforms and government submission systems frequently cap each uploaded document at 4MB — and legal filings are exactly the kind of long, scanned, exhibit-laden PDFs that blow past it. 4MB also makes sense for email: encoding inflates attachments by roughly 37%, so a 4MB file travels as a ~5.5MB message, safely inside typical mailbox limits.
This tool spreads your 4MB budget across all pages, maximizing sharpness within the cap and reporting the exact final size before you download. For very large bundles, pairing it with the Split PDF tool — one file per exhibit — often beats squeezing everything into a single document.
How it works
- Add your PDF — the 4MB target is preset (adjust it if your portal says otherwise).
- Click Compress to 4 MB.
- Check the reported size and download.
Frequently asked questions
How do I get a PDF under 4MB?
Just add it — the target is preset. Each page is fitted to a byte budget at the best quality possible, and the exact final size is shown before you download.
Why is 4MB a common limit?
Several court e-filing and government systems cap individual files at 4MB, and email encoding makes a 4MB attachment arrive as a ~5.5MB message — a sensible ceiling.
Is my document uploaded during compression?
No. Everything runs in your browser — your documents never touch a server.