Up to 80% File Size Reduction · Text Remains Sharp

Shrink heavy PDFs to fit any email limit.

Email caps attachments at 25MB, and government portals reject files over 5MB. Shrink 30MB documents down to 4MB in seconds without blurry text or missing pages.

Download on theApp Store

GET IT ONGoogle Play

Pre-flight size savings estimator · Automated zero-retention processing

9:41

signal_cellular_4_barwifibattery_full

Tax_Return_2026.pdf

24 Pages · Color Scans

Estimated Reduction

-78%

18.4 MBarrow_forward4.1 MB

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Strong Scan Mode

Best for email attachment limit

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Smart Light Mode

Preserves original vector text

Compress Now

How can you shrink a PDF file size on your phone without losing text quality?

Open the document in PDF Converter & Scanner and choose the appropriate compression engine. For scanned receipts, tax packages, and photographic documents, 'Strong Scan' re-samples camera grain down to 150 DPI while preserving all text vectors, reducing byte sizes by up to 80%. For born-digital reports and office memos, 'Smart Light' strips duplicate embedded font subsets and metadata without altering a single pixel.

Verified: PDF Converter & Scanner Dual-Profile Compression Engine

Two targeted compression engines.

Pick the optimal profile depending on whether your document consists of digital text or photographic scans.

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Smart Light Compression

Designed for text-heavy corporate reports, academic papers, and spreadsheets. Removes unreferenced PDF internal nodes, strips redundant metadata, and flattens redundant font tables. Zero reduction in vector clarity.

Typical reduction: 20% to 45%

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Strong Scan Compression

Designed for multi-page phone scans, signed paper packets, and photo receipts. Re-encodes raster layers using balanced DCT quantization, slashing mega-files down below portal limits.

Typical reduction: 65% to 80%

How to Compress PDF Files on Your Phone

Get oversized documents down to emailable sizes in three simple steps.

1Select Oversized PDF

Pick any PDF from your device files, email attachment, or scanned library.

2Choose Profile & Preview

Select Smart Light (for text documents) or Strong Scan (for photos & scans) and check the estimated reduction percentage.

3Compress in Seconds

Tap Compress Now. The streamlined PDF is optimized via high-speed compression and saved to your library, ready to send via email, chat, or cloud share.

PDF Compression Questions & Answers

Details about byte limits, resolution, and format preservation.

How do I compress a PDF under 25MB for email attachments?expand_more

Select your oversized PDF in PDF Converter & Scanner and choose the 'Strong Scan' profile. The app will calculate the exact byte savings in advance (typically shrinking 20–35MB down to 3–5MB) and generate an optimized file ready to email through Gmail or Outlook without exceeding attachment limits.

Will compressing a document make the text look blurry?expand_more

No. The 'Smart Light' mode strips redundant metadata, unreferenced objects, and duplicate font tables without touching vector text layers, keeping every character 100% crisp. The 'Strong Scan' mode optimizes photographic scans to balanced 150 DPI—sharp enough for high-resolution retina screens and standard office printing.

Can I compress password-protected PDF files?expand_more

Yes. When opening a protected PDF, simply enter the password once. The compression engine will optimize internal streams while preserving password security on the output file.

What happens if a document is already compressed?expand_more

The app includes an optimization safeguard. If a document cannot be compressed further without unacceptable loss of clarity, the app alerts you immediately and leaves your original file untouched.