Free • No Upload • Browser-Only

Compress PDF In Your Browser

Shrink PDF file size without uploading. Choose quality — High, Medium or Low.

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Drag & drop PDF files here

or click to select — batch up to 30 files with Pro

About this tool

Three quality presets: High (recommended, keeps text crisp), Medium and Low for maximum size reduction.

Why PDFMerge Tools?

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100% Private

Files never leave your browser. No server, no upload, no data collection.

Instant

No upload wait. Processing happens locally in seconds.

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Free to Try

5 free operations. $5 lifetime for unlimited, $9 for batch Pro.

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Works Everywhere

Any modern browser, any device. No installation.

Frequently Asked

How much smaller will my PDF be?

It depends on the content. Scanned documents and image-heavy PDFs often shrink 50-80%. Text-only PDFs may shrink less because they were already efficient.

Why does compression rasterize pages?

This tool renders each page to a JPEG image and rebuilds the PDF — the same approach used by most online compressors. Text stays readable at High quality, but is no longer selectable after compression.

Is there a file size limit?

The free plan handles files up to ~50 MB. Compression runs locally, so there is no server quota — the limit is your browser memory.

Will compression add a watermark?

No. Never. The output is a clean PDF with no watermarks, no branding and no hidden pages.