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Free PDF tool

Compress PDF to 1MB

Reduce your PDF file size to under 1MB without losing quality. Upload your file at the top to compress it in seconds, then read the guidance below.

Working field

Drop a PDF or click to upload it.

PDF Upload

Drag & drop a PDF here or click to upload

Accepted file type: PDF only

Result

Your compression status and download appear here.

Your compressed PDF will show here once you upload a file and start compression.

This tool is best for shrinking PDFs under the 1MB limits used by portals and email.

Compress PDF to 1MB — Reduce & Optimize File Size Online

Shrink large PDFs to under 1MB so they fit strict upload and email limits. This tool keeps the workflow simple: upload first, supporting content below, and the sidebar on the left for popular and related tools.

Under 1MB target

Reduce heavy PDFs below the common 1MB cap used by portals and email.

Quality preserved

Smart compression keeps text crisp and images clear while cutting size.

No formatting loss

Your layout, fonts, and structure stay intact through compression.

No setup required

Drag, drop, and compress directly in the browser with no installs.

How it works

  1. Drag and drop your PDF into the upload zone above, or click to browse.
  2. Click Compress PDF to optimize images, fonts, and file data.
  3. Wait a moment while the file is compressed to under 1MB.
  4. Download the smaller PDF, or reset the form and compress another file.

Best practices

  • Upload a valid PDF file for reliable compression.
  • Skip files already under 1MB to save a step.
  • Unlock password-protected PDFs before compressing.
  • Keep the original if you may need full quality later.
  • Check the result preview before you download.
  • Use the 500KB tool when limits are even stricter.

Frequently asked questions

How do I compress a PDF to under 1MB?

Upload your file to the working field above, then click Compress PDF. The tool automatically reduces the size below 1MB while keeping your text and images clear.

Can I shrink a PDF without losing quality?

Yes. Our smart compression trims the parts that make files heavy while keeping text sharp and images readable, so your document still looks great at a smaller size.

Is this PDF compressor secure?

Your file is handled securely during compression and is not kept for the long term, so your personal, academic, or work PDFs stay private throughout the process.

What file types can I upload?

This tool works with PDF files only. Drag and drop a PDF into the upload zone, or click it to browse and pick a file from your device.

What if my file is already under 1MB?

If your PDF is already 1MB or smaller, the tool lets you know that no compression is needed, so you avoid shrinking a file that is already small enough.

Are there other compression sizes available?

Yes. For stricter limits, use the Compress PDF to 500KB tool, or for higher-quality documents, try the Compress PDF to 2MB option.

Need a different target size? Try the Compress PDF to 500KB tool for stricter limits, or the Compress PDF to 2MB tool for higher-quality documents.