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· By The VisaBinder Team

How to Compress a PDF Under 5MB for Your Australian Visa Application

ImmiAccount rejects attachments over 5MB. Here's the simple way to get your Partner Visa PDFs under the limit without losing legibility — plus a one-click option.

This article is general information about Australian Partner Visa documentation. It is not migration advice. For advice on your circumstances, consult a registered migration agent (search MARA).

If you've ever tried to upload a 60-page bank statement or a stack of relationship photos through ImmiAccount, you've probably hit it: "Attachment exceeds maximum file size". The Department of Home Affairs caps every uploaded file at 5MB. There's no way to negotiate, and no override — your file fits or it doesn't get uploaded.

This guide walks through the simplest ways to bring a Partner Visa PDF under 5MB without making it unreadable. None of it is hard, and you don't need to be technical. If you'd rather not deal with it at all, VisaBinder compresses every category PDF to fit under 5MB automatically as part of compiling your evidence pack.

Quick answer: oversized visa PDFs are almost always big because they contain high-resolution scans or photos — so the fix is to shrink the images, not to delete pages. The easiest path: on a Mac, open the file in Preview → File → Export → Reduce File Size. If it's still too big, split a long document into two PDFs — ImmiAccount accepts several files per category, just not large ones. Or skip it entirely and let VisaBinder compress every category PDF under 5MB for you. The re-scanning and command-line options further down handle the stubborn cases.

Why 5MB? And why per file, not per category?

Home Affairs doesn't publish a detailed rationale, but the 5MB cap appears to be a legacy of the underlying ImmiAccount document handling. Whatever the reason, two things are true in 2026:

  1. The cap is per attachment, not per evidence category. You can upload many files in each category — they just have to be ≤5MB each.
  2. The cap is enforced at the upload step. ImmiAccount won't tell you in advance that your file is too big; it tells you after the upload fails.

That second point is what catches most applicants off guard. You spend an hour scanning bank statements, build them into a single PDF, and only when you go to upload do you find out that the file is 12MB and won't go.

Why your visa PDF is too big

Most oversized Partner Visa PDFs are big for one reason: they contain scanned images at a higher resolution than you need. A single A4 page scanned at 600 DPI in colour can be 4–6MB on its own. Stack twelve of those into a bank statement PDF and you're at 50MB before you've started.

The fix is almost always to shrink those images. In plain terms:

  • Aim for about 150 DPI. That's plenty for a document read on a screen — anything higher just adds file size. (200 DPI is fine if you're worried about small print.)
  • Save photos as JPEG rather than a lossless format. At a normal quality setting this looks identical to a reviewer but is several times smaller.
  • Keep text-only scans in black and white. A bank statement is black ink on white paper, so scanning or saving it in colour just wastes space.

You almost never need to delete pages or content. You just need the images inside the PDF to be the right size for a screen — and the tools below do that for you.

The easiest fixes (start here)

You don't need special software for most files. These options work without touching a command line.

On a Mac: Preview

The fastest option if you're on a Mac:

  1. Open the PDF in Preview.
  2. File → Export… (it has to be Export, not "Save As").
  3. From the Quartz Filter dropdown, choose Reduce File Size.
  4. Save with a new name and check the size.

If the result looks too fuzzy, the file has been compressed too hard. The easiest fix is to split it into two PDFs instead (see below), or use the Ghostscript option in the Advanced section, which lets you control exactly how much it shrinks.

In your browser: iLovePDF, Smallpdf, and similar

These work on any computer and need no install — you upload your PDF and download a smaller one. The catch: they upload your file to someone else's server. For a lease where the bank details are already redacted, that's fine. For raw bank statements or anything sensitive, prefer an offline option like Preview.

Adobe Acrobat

Adobe's free online compressor handles most files and offers three quality levels — Medium is usually right for visa evidence. Like the other web tools it uploads your file to Adobe's servers, so reach for an offline tool when the document is sensitive.

If it's still too big

If you've compressed and the file is still over 5MB, you have three reliable options:

  1. Split the file. A 60-page bank statement can be uploaded as two 30-page PDFs. Name them clearly: Joint_Bank_Statement_Jan-Jun_2025.pdf and Joint_Bank_Statement_Jul-Dec_2025.pdf. ImmiAccount handles many files per category — it just doesn't handle big ones. This always works.
  2. Re-scan at a lower resolution. If the original scan was 600 DPI colour, re-scan at 200 DPI greyscale. Often this single change fixes the problem.
  3. Strip the cover page or duplicate pages. Some bank PDFs have a glossy logo cover page that's much larger than the actual statement pages — removing it can be a quick win.

A note on redaction

Some applicants redact sensitive lines from bank statements (e.g. transactions unrelated to the relationship, or non-essential personal details). This is fine — but never redact with a black highlighter in Preview's annotation tools. Those marks can be removed by the recipient with a few clicks, exposing the underlying text.

If you need to redact:

  • Use a tool that flattens the redaction into the page image (Adobe Acrobat's redaction tool, or save the document with redactions applied as raster output).
  • Or convert the page to an image first, then redact and recompress.

VisaBinder's redaction helper handles this automatically — your highlighted lines are flattened into the final PDF before it's compressed.

Advanced: compress with Ghostscript (command line)

This section is for people comfortable using a terminal. If that's not you, the options above will handle almost every file — skip ahead.

Ghostscript is a free, offline tool that gives you the most control over how much a PDF is compressed, and it never uploads your file anywhere. Install it via Homebrew (brew install ghostscript) and run:

gs -sDEVICE=pdfwrite \
   -dCompatibilityLevel=1.4 \
   -dPDFSETTINGS=/ebook \
   -dNOPAUSE -dQUIET -dBATCH \
   -sOutputFile=output.pdf input.pdf

The -dPDFSETTINGS flag has four common values, in increasing aggressiveness:

  • /printer — 300 DPI, ~3–5x reduction
  • /ebook — 150 DPI, ~5–10x reduction (recommended for visa PDFs)
  • /screen — 72 DPI, ~10–20x reduction (text stays readable, photos look soft)
  • /prepress — high quality (rarely useful here)

This is the engine behind a lot of "compress my PDF" services — and the engine VisaBinder runs server-side, so you never have to install it.

How this fits into your evidence pack

PDF compression is the unglamorous last step in compiling Partner Visa evidence. The earlier steps — gathering, sorting into the four Home Affairs categories, deciding what's strong enough to include — are the real work. Our subclass 820 evidence checklist walks through what to include in each category.

Once you've gathered everything, you'll have a stack of PDFs, JPEGs, and screenshots that need to be combined per category and dropped under 5MB. You can do that by hand with the tools above, or let VisaBinder handle the compilation and compression in one step — it's exactly the fiddly, repetitive part the tool exists to take off your plate.

Quick reference: what to try first

If you have a single file over 5MB, in order:

  1. Open in Preview → Export → Reduce File Size. 30 seconds. Works most of the time.
  2. Split the PDF into two files. Always works.
  3. Re-scan at 200 DPI greyscale instead of 300 DPI colour. Fixes most fresh scans.
  4. Run Ghostscript with -dPDFSETTINGS=/ebook. For the stubborn ones, if you're comfortable on the command line.

The 5MB cap isn't going anywhere. The good news is that once you've compressed your evidence once, the workflow is the same for any future RFI documents Home Affairs requests — and for your 801 stage 2 application a couple of years later.