NearPDF

2026-08-10

Why CM/ECF rejected your PDF exhibit — splitting it to fit your court's file-size limit

A PDF exhibit that files without a hitch in one federal district court can bounce right back out of CM/ECF (Case Management/Electronic Case Filing) in another — not because anything about the document changed, but because the maximum PDF size CM/ECF will accept isn't one number nationally. It's a local rule, and each of the roughly 94 U.S. district courts sets its own. The District of Massachusetts's own CM/ECF FAQ system is blunt about it: "Each PDF document may not exceed 7 MB in size." The Central District of California's own news page puts its ceiling at 35 MB, effective August 2, 2019. The Northern District of California allows exactly seven times Massachusetts's limit — 50 MB — per its own "Preparing Your CM/ECF Filing" guidance. And the Western District of Washington's own announcement shows the number isn't even fixed within a single court over time: "The Court has raised the limit on PDF file size... from 10 megabytes (MB) to 35 MB." A scanned deposition transcript, a set of medical records, or a bundle of exhibits assembled from several source documents can clear the tightest of those limits without anyone doing anything unusual — and the fix isn't quite the same one that works for an oversized email attachment, because courts also care about exactly how you split a document and what you name the pieces.

There's no single "CM/ECF limit" — your own court's number is the only one that matters

CM/ECF is the shared national e-filing system, but the byte ceiling it enforces is a local rule each district sets for itself, not a property of the software. Confirmed straight from four different courts' own pages, the range runs from 7 MB (D. Massachusetts) to 35 MB (C.D. California, and W.D. Washington after its own increase from 10 MB) to 50 MB (N.D. California) — nearly a sevenfold spread for the exact same kind of filing. Guessing wrong isn't a cosmetic mistake: a document assembled to fit comfortably under one court's 50 MB ceiling can get rejected outright by a court holding to 7 MB, and finding that out at 11:58 p.m. before a midnight deadline is the worst possible time to learn it. The one universal rule is checking the specific court's own CM/ECF or ECF page (or its clerk's office) for its current number before you start assembling a filing, since none of the courts above treat their own limit as something a filer should have to infer.

What the courts themselves say to do about it

Both CACD and NDCA don't just publish a number — they publish an actual procedure for going over it. CACD's own language is direct: "PDF files that exceed 35 MB must be divided into sub-volumes," and each resulting file "shall contain no more than one document or portion of one document per file" — so the split has to respect document boundaries, not just cut wherever the byte count happens to land. NDCA's own guidance goes further and gives a worked naming example: split an oversized exhibit into parts labeled "Exhibit A, Part 1 of 3," "Exhibit A, Part 2 of 3," and "Exhibit A, Part 3 of 3." The same page also states the opposite instruction for the opposite problem: "you may combine smaller exhibits into one file, as long as that file is under 50.0 MB" — and separately recommends keeping a single day's submission to roughly "8-10" files total, since filing too many pieces at once risks the system timing out. Between the two courts, the actual guidance is symmetric: combine what's small enough to combine, split what isn't, and label the split pieces so a judge or clerk opening "Part 2 of 3" knows exactly what came before and after it.

Mapping that onto NearPDF's actual tools

NearPDF's merge tool is the right tool for the "combine what's small enough" half of that instruction: add the exhibit files to the workspace, put them in the order they need to appear, click merge, and save one file — entirely on-device, nothing uploaded to find out if the combined file clears your court's limit. NearPDF's split tool is not the right tool for the other half, even though its name matches the word courts use: it produces exactly one PDF per page, zipped, with no "N MB per output file" setting and no way to ask for three roughly-equal-sized chunks. For "Part N of M"-style chunking by file size, the tool that actually works is the same one the too-large-to-email post above already documents — NearPDF's delete tool, run through more than once: add the source file, delete every page outside the range you want in "Part 1," save, check the actual downloaded file size against your court's number, and repeat with the source file reloaded for "Part 2" and beyond. The one thing that's genuinely different for a court exhibit versus an email attachment is that page count is a bad proxy for byte size here: a handful of heavily scanned exhibit photos can outweigh forty pages of plain typed text, so the ranges that work aren't necessarily even, and checking each export's actual size — not estimating from a page count — is the only way to know a given "Part" will clear the limit.

Filing an oversized exhibit in CM/ECF, one step at a time 1. Look up YOUR court's limit Confirmed range across four courts: 7 MB (D. Mass.) to 35 MB (C.D. Cal., W.D. Wash.) to 50 MB (N.D. Cal.) 2. Combined exhibits already under the limit? → NearPDF merge tool, one file, done — courts explicitly allow combining small exhibits 3. Still too big? Carve labeled parts → NearPDF delete tool, run more than once: remove pages outside each part's range, save, check the real exported size — not a page-count estimate — against your court's number 4. Name each file the way your court expects e.g. "Exhibit A, Part 1 of 3.pdf," "Exhibit A, Part 2 of 3.pdf" — N.D. Cal.'s own worked example No NearPDF tool knows your court's byte limit or auto-labels parts — both steps stay manual, on purpose.
The actual, court-documented procedure for an oversized CM/ECF exhibit, and which NearPDF tool answers each step.

Fix rotation and page order before you carve out parts, not after

A scanned exhibit that came off a duplex scanner sideways, or with its pages out of sequence, is worth fixing before you start splitting by size rather than after — the same caution the too-large-to-email post gives for rotation applies here, and it compounds once a document is already in three labeled pieces. Straighten any sideways pages using the same per-page rotate control described in NearPDF's rotation post, and put pages back in the right sequence first if a duplex-scanned original came out of order the way NearPDF's reorder post describes, before you touch delete to carve out size-based parts. Fixing either one after the file is already split means redoing every part's page range and re-checking every part's size a second time.

The honest limits, restated

NearPDF doesn't know your specific court's byte limit, doesn't split by a target size in MB, and doesn't auto-generate "Part 1 of 3" file names — every one of those is a manual step you carry out against the number and naming convention your own court's page states, because no generic tool can know a rule that four different federal districts don't even agree with each other on. NearPDF also has no compression or resizing feature at all, so a handful of very heavy, high-resolution scanned exhibit pages can still exceed even the most generous district's ceiling no matter how the rest of the file gets divided — that's a re-scan-at-lower-resolution problem, the same honest caveat the too-large-to-email post makes for email attachments, not something a page-splitting tool can fix after the fact. For the ordinary case — a multi-exhibit filing that's simply too big as one file for the specific court's actual, published limit — carving it into correctly sized, clearly labeled pieces, entirely on your own device, gets it filed without uploading anything to a server to find out whether it would have worked.