SEERSeerKits

Compress PDF Files Online

Shrink PDF file size for email and uploads by optimizing images and streams. Local compression where supported — free tier for documents under 50 MB.

Local Processing

Drag and drop your file here

or click to browse from your device

pdf

Maximum file size: 50 MB

Import fromOneDrive URLs supported

Supported Formats

File types you can use with PDF Compressor.

Supported Input Formats

pdf

Available Output Formats

pdf

Usage Limits

Free tier limits for PDF Compressor on the web.

  • Max file size

    50 MB per file

  • Daily free uses

    8 conversions per day

  • Batch limit

    Up to 3 files at once

Need more? Try the Seer app for expanded limits.

Privacy & Processing

Related Tools

PDF Merger
Combine multiple PDFs into one document in the order you arrange. Local merging keeps contracts and reports off third-party storage — free for small files.
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PDF Splitter
Extract page ranges or split every page into separate files. Fast local splitting for invoices, chapters, and scanned batches — no account needed.
Open tool →
PDF to Image
Export PDF pages to JPG or PNG for slides, thumbnails, and social previews. Renders locally in your browser — free for documents under 50 MB.
Open tool →

How to Use

How to compress a PDF with SeerKits

  1. 1

    Upload the PDF

    Select the document you need to email or upload to a portal.

  2. 2

    Pick compression level

    Choose Screen, Email, or Print preset and preview estimated savings.

  3. 3

    Download optimized PDF

    Compress and save. Merge with other chapters afterward if you are assembling a report.

Need more power?

Take PDF Compressor further with Seer PDF

The web tool is perfect for quick jobs. When you need bigger files, batch workflows, or pro-grade controls, continue in the Seer app ecosystem — same privacy-first approach, more headroom.

  • Larger file limits beyond the web free tier
  • Batch processing for multiple files at once
  • Advanced codec and quality options
  • Offline processing when you need it on the go
Download Seer PDF

Frequently Asked Questions

Will text stay selectable after compression?
Text layers remain selectable when the source PDF contains real text. Scanned pages are image-based — compression lowers image DPI but keeps readability for screen viewing.
How much can I shrink a scanned PDF?
Image-heavy scans often drop 50–80% with balanced presets. For archival print quality, use lighter compression or split large scans first.
Are compressed files watermarked?
SeerKits never adds watermarks on free web compression. Your document is returned exactly as processed, ready to share.