Compress PDF

Options

100% Private: Your files are never stored on our servers — they are deleted immediately after processing.

Make heavy PDFs light enough to email, upload or store — without destroying quality. Choose how aggressively to compress: keep it light for archiving, or go strong to hit strict upload limits. Our engine squeezes images and cleans up redundancy while text stays razor sharp.

How to Compress a PDF online

  1. 1

    Upload the PDF you want to shrink.

  2. 2

    Pick a level: Light (max quality), Recommended (best balance) or Strong (smallest size).

  3. 3

    Click Compress PDF and wait a few seconds.

  4. 4

    Download the smaller PDF and compare the sizes.

Why use Compress PDF on impdf.app?

Three smart levels

Light keeps near-original quality, Recommended balances size and clarity, Strong goes as small as possible.

Text stays sharp

Compression targets images and redundant data — your text remains crisp and selectable.

Email-friendly output

Get files under common attachment limits (10-25 MB) so they pass through Gmail, Outlook and portals.

Size report

See the before/after file sizes on the result screen so you know exactly how much you saved.

Frequently Asked Questions

How much smaller will my PDF get?

It depends on the content. Image-heavy PDFs often shrink by 50-90%; text-only PDFs shrink less because they are already efficient.

Which compression level should I choose?

Use Recommended for most jobs. Pick Light when quality matters most (printing, archiving) and Strong when you must hit a strict size limit.

Will compressed PDFs still be searchable?

Yes. Text content and fonts are preserved — you can still search, select and copy text after compression.

Is there a file size limit?

You can compress PDFs up to 100 MB, free and without registration.