How to Compress PDF for Court Filing

Before compressing, it is worth understanding why your PDF is large. The most common causes are high-resolution scanned exhibits (scanned at 600 DPI when 300 DPI is sufficient), embedded fonts that are not subset-optimized, and photographic evidence that has not been downsampled. Knowing the cause guides the appropriate compression approach. For straightforward compression without specialized software, LazyPDF provides a browser-based tool that uses Ghostscript on the server side — the same engine used in professional PDF workflows. The tool preserves text at full quality while compressing image content to reduce file size. This approach works well for typical court filing scenarios where the document is primarily text with scanned attachments.

1. 1Open lazy-pdf.com/compress in your browser and upload your legal PDF
2. 2Select medium or high compression — 'medium' typically reduces file size by 40–60% while keeping text fully legible
3. 3Download the compressed PDF and open it to verify all text, signatures, and exhibit content is readable
4. 4Check the file size against the court's limit — if still too large, split the filing into separate documents as most courts permit

Each court has its own electronic filing rules, and checking them before you compress saves time. Federal CM/ECF generally requires PDFs that are text-searchable (not just scanned images), comply with court-ordered formatting requirements (margins, fonts, line spacing), and are under 10 MB per document with larger filings split across multiple docket entries. Some courts specifically prohibit password protection on filed PDFs — remove any password or encryption before filing. Most courts require PDFs to be 'flat' (no form fields, annotations that can be modified, or embedded JavaScript). When compressing, verify that the output remains text-searchable if the input was text-searchable. Compression should not convert a text PDF to an image-only PDF — if it does, the court's text search and accessibility requirements will not be met. Exhibits are typically filed as separate PDFs from the main brief in federal practice. Keeping exhibits separate from main documents also makes compression more manageable — you can compress image-heavy exhibits aggressively and handle the text-primary brief separately.

1. 1Review your court's local rules for CM/ECF filing size limits and per-document maximums
2. 2Confirm whether your court prohibits password-protected PDFs (most do for filed documents)
3. 3Verify the compressed PDF remains text-searchable by testing Ctrl+F in the PDF viewer
4. 4For exhibits: file as separate PDFs from the main brief and compress each individually to target size

Scanned exhibits are the most common cause of oversized court filing PDFs. A 20-page scanned deposition excerpt at 600 DPI might be 15 MB — compress it to 300 DPI equivalent and it becomes 3–4 MB with no meaningful loss in court-admissible quality. The key distinction is between exhibits that need to be readable in print (discovery documents, correspondence, contracts) and those that need photographic quality (photographs in evidence, engineering diagrams). For text-based scanned exhibits, aggressive compression to 150–200 DPI equivalent is acceptable — text remains readable at those resolutions in standard document sizes. For photographic evidence, preserve more quality (200–250 DPI equivalent) to ensure evidentiary integrity. When multiple exhibits push the total filing over size limits, consider splitting the filing: file the brief and core exhibits in one filing event, then additional exhibits as a separate docket entry referenced in the main brief. Most courts permit this and it avoids the need to compress exhibits to the point of degrading quality.

1. 1Identify which exhibits are text-based scans versus photographic evidence
2. 2For text-based scanned exhibits: compress aggressively — text remains readable at reduced resolution
3. 3For photographic exhibits: compress moderately to preserve evidentiary clarity
4. 4If total filing still exceeds the limit: split into main brief + exhibits filed separately

After compression, perform a final check before filing. Open the PDF and verify: all pages are present and in correct order, all text is legible at standard zoom (100%), all exhibits have their full content including headers, dates, and signatures, and the document is text-searchable (test with Ctrl+F on a word you know appears in the document). For documents with Bates numbers, verify the stamped numbers are still visible and legible after compression. For documents with redactions, confirm that the redactions are properly applied and that no underlying text is readable in the compressed version — compression does not remove improper redactions, but it is worth confirming the redactions are visual blocks, not just white boxes over visible text. Confirm the final file size against the court's limit using your file browser or the PDF viewer's document properties. If using CM/ECF, the system will reject the upload if it exceeds the limit — checking beforehand saves the time of a rejected filing attempt.