PDF Compressor

Compress PDF Files Online

Reduce PDF document size for free without sacrificing text clarity. Optimize images, clean unused streams, and compress PDFs for fast email sharing and web uploads.

~50% SmallerRecommended Preset
Lossless TextCrisp Vector Fonts
0B StoredProcessed In-Memory
Daily Limit

Drag & drop PDF to verify signatures

PKCS#7, CAdES, PAdES, X.509 chain & LTV validation

.PDF/MAX 50MB

Zero-Storage Privacy

Files are sent over HTTPS and checked in server memory only — never written to disk or stored.

Cryptographic Standards

Fully compliant with IETF RFC 5652 (CMS), Adobe PDF specs, eIDAS, and Controller of Certifying Authorities (CCA).

Verify Anonymously

No personal registration or document tracking is required. Verify up to 2 files daily as guest.

Detailed Audit Trails

Generates downloadable, verified PDFs with structural signature stamps and trust summaries.

Isolated Processing

Each file is processed in an isolated, in-memory request and discarded as soon as the result is returned.

Zero Data Logging

Absolutely no logging of files, names, email contents, or signature details. Pure privacy.

Process

How to Compress a PDF in 3 Easy Steps

Shrink large PDF documents while preserving crisp vector text and graphics.

1

Upload PDF File

Drag and drop your PDF into the dropzone above or click to select a document up to 50 MB.

2

Select Compression Level

Choose between Recommended (~50% smaller), Extreme (~70% smaller), or Lossless stream cleanup.

3

Download Compressed PDF

Click to download your optimized PDF immediately or open it in the PDF Playground to edit further.

Features

Enterprise PDF Optimization Engine

Smart compression built for legal, financial, and professional documents.

Vector Text Protection

Fonts, vector shapes, lines, and digital signatures remain mathematically untouched and pixel-crisp.

Zero File Retention

Your documents are processed securely in-memory. We never store, copy, or keep your files.

Instant Metrics & Comparison

View exact space savings, percentage reduction, and original vs compressed byte sizes.

FAQ

Frequently Asked Questions

Everything you need to know about compressing PDF files online.

Our PDF compressor analyzes embedded raster images, downsamples resolution to optimal DPI targets, and compresses image streams using clean JPEG quality algorithms. It also removes duplicate object streams and metadata.

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