Free tool

Free Compress PDF Tool

Compress PDF files online to reduce size — choose Extreme, Strong, Balanced, or Light compression and download instantly. Free, private, and local in your browser.

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Everything you need in a free PDF compressor

Shrink PDF file size

Reduce large PDFs for email, uploads, and sharing with Extreme, Strong, Balanced, or Light compression.

Clear size comparison

See original vs compressed size and savings percent right after processing so you can pick the right level.

100% browser-based

Compression uses PDF.js and pdf-lib in your browser. Your documents stay on your device — nothing is uploaded to Focera.

Drag & drop workflow

Drop a PDF up to 25 MB (50 pages), choose a level, compress, preview, and download in a few clicks.

How It Works

Shrinking a PDF should be quick and private. Focera keeps the whole flow on one page — upload, choose a compression level, compress, and download without an account or desktop installer.

  1. Upload your PDF. Drag and drop a file up to 25 MB (max 50 pages), or click the zone to browse from your device.
  2. Pick a compression level. Extreme and Strong save the most space; Balanced is a solid default; Light keeps more detail.
  3. Compress and download. Pages are re-encoded locally into a smaller PDF. Compare sizes, preview the result, and download again anytime.

Jump back to the PDF compressor anytime to process another file.

Popular Use Cases

  • Email attachments — Shrink scanned contracts or reports so they fit mailbox limits.
  • Form and portal uploads — Meet file-size caps on job apps, banking portals, and government sites.
  • Share on chat and cloud — Send lighter PDFs over Slack, WhatsApp, Drive, or Dropbox.
  • Archive bulky scans — Recompress image-heavy PDFs before long-term storage.

Private by Design

Your PDF is read and compressed entirely in your browser. Focera does not receive the file, store pages, or run compression on a remote server. When you leave the page, temporary previews are revoked and nothing remains on our infrastructure.

Related Tools

  • Merge PDF — Combine multiple PDFs into one file before or after compressing.
  • Split PDF — Break a PDF into pages, ranges, or fixed-size chunks before compressing.
  • PDF Editor — Reorder, rotate, or extract pages before compressing the result.
  • PDF Watermark — Stamp a logo or image watermark on every page.
  • PDF to JPG — Convert pages into JPEG images for sharing and design tools.
  • Invoice Generator — Create professional invoices and download them as PDF.
  • Markdown Editor — Write docs with live preview and export to PDF.

FAQ

Is this PDF compressor free?

Yes. Compress and download unlimited PDFs with no account, subscription, watermark, or daily limit.

Are my PDFs uploaded to a server?

No. Compression runs entirely in your browser with PDF.js and pdf-lib. Your files stay on your device.

How does compression work?

Each page is rendered and re-encoded as a compact JPEG, then rebuilt into a smaller PDF. Stronger levels use lower resolution and quality for more savings.

Will text stay selectable?

Compression flattens pages into images, so text is no longer selectable or searchable. Visual layout is preserved for sharing, email, and uploads.

Is there a file size or page limit?

Yes. Upload PDFs up to 25 MB with a maximum of 50 pages per compression.

Can I compress password-protected PDFs?

Not yet. Remove the password from protected files first, then upload them to compress.

Do I need to install software?

No. Open the page in a modern browser, drop your PDF, and compress immediately.

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