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Compress PDF for ECF Court Filing

Compress court filings under ECF's 10 MB cap without exposing privileged communications, sealed material, or client data to a third-party server. Runs in your browser.

US federal court ECF: 10 MB per document. Some district courts enforce lower limits.

Drop a PDF here or click to browse

PDFs up to 50 MB · Stays on your device

Your files stay on your device

Court filings may contain privileged information. This tool processes your document entirely in your browser — no data is transmitted to any server.

The federal court Electronic Case Filing (ECF) system enforces file-size limits on every document filed electronically. The standard cap is 10 MB per document, but some courts enforce stricter limits, and large exhibits routinely exceed these thresholds.

ECF file-size limits:

- Standard federal court ECF: 10 MB per document - Some district courts: 5 MB or 8 MB limits - PACER uploads: varies by court - State court e-filing systems: typically 10–25 MB

Documents commonly filed via ECF:

- Motions and briefs - Exhibits and attachments - Deposition transcripts - Discovery documents - Settlement agreements - Expert reports with embedded images

Why you shouldn't upload privileged documents to a compression service.

Court filings routinely contain privileged attorney-client communications, work product, trade secrets, sealed material, and personal information of parties and witnesses. Uploading those to a third-party compressor creates a data-exposure risk that's hard to justify under most ethics rules. This tool compresses entirely in your browser — the filing never reaches a server.

How to compress for ECF:

1. Drop your PDF above or tap to select 2. Target is set to 10 MB — adjust for your court's specific rule 3. Our engine dials in on the exact target while preserving text clarity 4. Download and file via ECF

Portal file-size limits verified as of July 2025. Always double-check the official portal for current limits.

Questions people ask.

What is the ECF file size limit?
Standard federal court ECF: 10 MB per document. Some district courts enforce lower limits (5 MB or 8 MB). Check your court's local rules for the exact cap.
Is this appropriate for confidential court filings?
Yes. The filing is processed entirely in your browser via WebAssembly — nothing is transmitted to a server. This eliminates the data-exposure risk that comes with server-side compressors, which is what ethics rules around client confidentiality generally require.
Will compression affect the readability of court filings?
Text-based PDFs (Word-to-PDF exports) compress with zero quality loss — only embedded images are affected. Scanned exhibits drop to slightly lower image resolution but text stays clearly legible.
Can I split a large filing into multiple PDFs?
Yes. Use the Split PDF tool to extract specific page ranges. Many courts allow filing large exhibits as separate attachments to the main document.