✍️ PDF Tool

Sign PDF Online Free

Add your electronic signature to any PDF in seconds. Draw, type, or upload your signature — completely free. No signup required. Your files are deleted automatically after 2 hours.

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Drag & drop your PDF here

or click to browse from your computer

Supports: PDF · Max 50 MB per file (free) · 1 GB with Pro

✅ Compression complete!

80%

Average size reduction

2M+

Files compressed

100%

Free to use

Why use 5iles to compress PDF?

Professional compression technology that reduces file size while preserving document quality.

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Instant compression

Files are compressed in seconds using our optimised cloud pipeline. No waiting, no queues.

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Secure & private

All files encrypted with AES-256. Automatically deleted from our servers after 2 hours.

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Smart compression

Our algorithm finds the perfect balance between file size and visual quality automatically.

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Works everywhere

Compress PDFs on any device — desktop, tablet, or mobile. No app installation needed.

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Batch compression

Upload and compress multiple PDF files at once. Save hours of repetitive work.

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Cloud storage

Connect Google Drive, Dropbox, or OneDrive to compress files directly from the cloud.

How to compress a PDF

Reduce your PDF size in three simple steps

Upload your PDF

Drag & drop or click to upload your PDF file. Supports files up to 50 MB on the free plan.

Choose compression

Select your compression level — from high quality to maximum compression depending on your needs.

Compress it

Click compress and our engine processes your file in seconds using smart optimisation algorithms.

Download result

Download your compressed PDF instantly. Share it or save it to your cloud storage.

Frequently asked questions

Our recommended compression setting reduces file size by up to 80% with no visible quality loss. You can also choose high quality mode which prioritises visual fidelity, or maximum compression for the smallest possible file size.

Yes. All files are encrypted during upload and processing using AES-256 encryption. Files are permanently deleted from our servers within 2 hours. We never read or share your file contents.

The free plan supports PDF files up to 50 MB. Upgrade to Pro to compress files up to 1 GB, or the Team plan for files up to 5 GB.

Yes! Upload multiple PDF files at once and compress them all in a single click. Batch processing is available on all plans including the free tier.

Results vary depending on the content of your PDF. PDFs with many images typically compress by 60–90%. Text-heavy PDFs usually compress by 20–50%. Our average across all files is 80% size reduction.

Sign PDF Online Free

Drag & drop your PDF here

Why use 5iles to compress PDF?

How to compress a PDF

Frequently asked questions

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