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Compress PDF

Reduce PDF file size in your browser with object-stream optimization and optional metadata removal. Private, fast, and no account required.

Upload PDF

Choose a PDF to optimize its size in your browser.

Drop a PDF here or click to browse

Supports application/pdf up to 25 MB

No PDF selected

Upload a PDF to reduce its file size.

Compression options

Optimize the PDF structure and optionally remove document metadata.

Clear title, author, subject, keywords, producer, and creator fields.

Compression optimizes the PDF structure and clears metadata. Images are not re-encoded, so savings vary and some PDFs may not shrink.

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Category
PDF
Version
1.0.0

Key Features

  • Object-stream optimization

    Re-serializes the PDF with object streams enabled to remove structural overhead.

  • Optional metadata removal

    Strip the title, author, subject, keywords, producer, and creator fields before saving.

  • Private & local

    Compression runs in your browser - the original PDF never leaves your device.

How to Use

  1. 1

    Upload a PDF

    Drop a PDF or browse to select the document you want to compress.

  2. 2

    Choose options

    Keep "Remove metadata" on to strip identifying fields, or turn it off to preserve them.

  3. 3

    Compress and download

    Run the compressor, review the size reduction, then download the optimized PDF.

Use Cases

  • Meeting email attachment limits

    Shrink a bulky PDF so it clears an email provider or portal upload cap without re-exporting from the original source.

  • Scrubbing metadata before sharing

    Remove author, producer, and creator fields from contracts or reports before sending them outside your organization.

  • Speeding up archive uploads

    Reduce the structural overhead of text-heavy exports so batches of documents upload faster to storage or a document management system.

  • Cleaning up office-suite exports

    Optimize PDFs saved from word processors or presentation software, which often carry extra bloat from their export process.

Examples

Trim an exported report

Optimize a text-heavy PDF exported from an office suite that carries extra structural overhead.

report.pdf (metadata removal on)
report-compressed.pdf (smaller structure, cleared metadata)

Strip identifying metadata

Remove author and producer fields from a document before sharing it.

contract.pdf (metadata removal on)
contract-compressed.pdf (title/author/producer cleared)

Benefits

  • No upload or account required
  • Preserves visual quality - no image re-encoding
  • Clears identifying metadata on request
  • Works offline after the page loads

Best Practices

  • Keep metadata removal on when sharing documents publicly.
  • Expect the biggest gains on text-heavy or unoptimized PDFs.
  • Compare the original and compressed sizes before replacing your file.

Common Mistakes

  • Expecting large savings on image-heavy or already-optimized PDFs.
  • Assuming pages or visible content are altered - only storage and metadata change.
  • Uploading encrypted PDFs, which may fail to load until unlocked.

Privacy Notice

All compression runs in your browser. PDF files are never uploaded to ToolMint servers.

About This Tool

What is this tool?

Compress PDF reduces a PDF file’s size in your browser by re-serializing it with object streams and optionally removing document metadata.

Why use it?

Use it to make PDFs easier to email or upload and to strip identifying metadata, without sending files to a server or losing visual quality.

Limitations

This tool does not re-encode or downsample embedded images, so savings vary and image-heavy or already-optimized PDFs may not shrink. It does not unlock encrypted PDFs or change page content.

Frequently Asked Questions

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