Guide

How to Compress a PDF to 2 MB

Short answer: To compress a PDF to 2 MB, open the document in PDF JustFit, enter 2 MB as the target size, choose a compression mode, and let the two-stage solver search for the best quality at that size.

When you need this

  • Your email provider or recipient caps attachments at around 2 MB.
  • An upload form states a 2 MB maximum.
  • You want a predictable file size rather than an abstract quality level.
  • You are sending a scanned document that is currently far above 2 MB.

Steps

  1. Open the PDF in PDF JustFit

    Load the file from Files, or send it to PDF JustFit from another app's share sheet.

  2. Enter 2 MB as the target size

    Type the exact size you need. PDF JustFit accepts a target size rather than a quality level.

  3. Pick a compression mode

    Smart keeps text selectable. If 2 MB is a tight fit for a heavily scanned document, Maximum can go smaller.

  4. Compress and review

    Compare the original and the compressed result page by page to confirm the text is still readable.

  5. Send or save

    Export the result and attach it, or share it directly from the app.

The target size is the input, not the output

Most compressors take a quality setting and return whatever size that produces. PDF JustFit takes the size and searches for the quality, which is what makes a 2 MB target a direct instruction rather than a hopeful guess.

Four presets if you prefer not to type a number

Light, Balanced, Strong and Extreme move along the same quality-to-size curve the solver explores automatically, for cases where you would rather tap once than think in megabytes.

Privacy and limitations

Quality has a floor

Reaching a very small target on a heavily scanned or image-heavy document requires stronger compression. Check the result before sending it, particularly if the document contains small print or fine detail.

Already under 2 MB

If a PDF is already at or below the target and fully optimised, PDF JustFit keeps your original file rather than producing something larger.

Frequently asked questions

How do I compress a PDF to 2 MB?

Open the PDF in PDF JustFit, enter 2 MB as the target size, choose a compression mode and compress. The two-stage solver searches for the best quality that reaches 2 MB.

What if the PDF is already under 2 MB?

According to the product description, if a PDF is already fully optimised, PDF JustFit keeps your original file rather than producing something larger.

Why is 2 MB a common target?

The PDF JustFit product description uses 2 MB as its example target size for an email attachment, which is a common attachment limit.

Keep your documents light, organized and private

PDF JustFit: Compress, AI Chat is available on the App Store for $9.99. Requires iOS/iPadOS 26.5 or later.