Comparison

Smart PDF Compressor vs PDF Compressor | Reduce Size

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Smart PDF Compressor

Features
Read full description

Smart PDF Compressor is a free, offline PDF compressor for iPhone and iPad that helps anyone emailing, uploading or storing a PDF dramatically reduce file size (for example, shrinking an 8-page scan from 5.6 MB to 669 KB, 88.1% smaller) — without the file ever leaving the device. ALL PROCESSING IS LOCAL Your documents never leave your device. No internet connection required, no cloud uploads, no data collection. Complete privacy guaranteed. KEY FEATURES - Target Size Mode: Pick an exact target file size (25 MB, 10 MB, 5 MB, 2 MB, or custom) to fit email and upload limits - Keep Text & Links Selectable: Preserves original text, hyperlinks, and document structure by default - Size Estimates First: See the estimated size for each option before you compress - Three Presets: Best quality, Balanced (recommended) and Smallest file - Advanced Options: 1-bit black & white mode, optional OCR text recognition, resolution override (72–300 DPI), and metadata removal - Smart Compression: Automatically detects scanned vs. digital pages and applies suitable settings - Batch Compression: Compress multiple PDFs at once with progress tracking - Share as ZIP: Bundle several compressed PDFs into one ZIP archive and name it before you share - Side-by-Side Preview: Compare original and compressed pages before saving - File History: Browse, preview, rename, and share all your compressed files - Appearance & Languages: Light/Dark mode and support for English, German, French, Japanese, and Korean - Works on iPhone and iPad HOW IT WORKS 1. Tap Choose PDF and pick a file from Files 2. Choose a preset or set a target size — see estimated results before compressing 3. Tap Compress PDF and see the exact before and after sizes 4. Share or save your compressed PDF, or send several as one ZIP PERFECT FOR - Reducing email attachment sizes - Fitting strict upload limits on portals and government forms - Saving storage space on your device - Compressing scanned receipts, contracts, and books - Preparing files for sharing via messaging apps Smart PDF Compressor uses advanced on-device image processing and structure-preserving optimization to deliver fast, reliable compression without sacrificing readability.

About

PDF Compressor | Reduce Size

Features
Read full description

PDF Compressor | PDF Resize is a fast, reliable, and powerful tool for reducing the size of your PDF files. Whether you need to share documents faster, save storage space, email files easily, or meet upload limits, PDF Compressor | PDF Resize provides efficient and high-quality compression in just a few taps. PDF Compressor | PDF Resize uses advanced optimisation technology to maintain text and image clarity while significantly reducing file size. Adjust compression levels, preview results, and manage your documents with a simple, modern interface. Key Features: • Compress PDF files instantly • Adjustable compression levels for custom output quality • Reduce file size without quality loss • Fast and easy one-tap compression • Multiple compression levels • Save storage space on your device • Share compressed files • Secure processing — your files stay private Use Cases: • Reduce PDFs for email attachments • Meet upload size limits for work or school • Save storage space on your device • Optimize large scanned documents • Prepare PDFs for printing or sharing • Send files faster on slow connections Perfect For: • Students submitting assignments • Professionals sending documents • Anyone managing large PDF files Why Users Choose This App: PDF Compressor | PDF Resize balances strong compression with clean output, giving you smaller files without sacrificing essential detail. Its straightforward design and high-speed processing make it an essential tool for anyone working with PDFs regularly. Download now and make your PDFs smaller, faster, and easier to share. Subscription Details: • Title: Savory All Access • Length: 1 year & Lifetime • Price: $34.99 per year, $4.99 per week (auto-renews) and $59.99 lifetime. • Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://docs.google.com/document/d/1IysoItFPBXxdxDkkTJ6FRT1Of8qXqAwwB0op5coC1nU/edit?usp=sharing

Screenshots

Smart PDF Compressor4 screens
PDF Compressor | Reduce Size4 screens

Verdict

The call

The clearest difference is in-app purchases: Smart PDF Compressor at none against PDF Compressor | Reduce Size's 3. Smart PDF Compressor also leads on update cadence (every 9 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. PDF Compressor | Reduce Size sells 3 in-app purchases, starting at $4.99 per 7 days. Smart PDF Compressor asks for nothing beyond the download.

UpkeepUpdate frequency

Smart PDF Compressor ships an update every 9 days, PDF Compressor | Reduce Size every 3 weeks. Both last shipped on October 31, 2026.

Scorecard2 real differences Ā· 4 level
Smart PDF Compressor versus PDF Compressor | Reduce Size: the parameters behind the verdict, then further details
ParameterSmart PDF CompressorPDF Compressor | Reduce Size
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.6 — better
Further details — not scored
Size4 MB23 MB
Age rating4+4+
DeveloperQuan DangKELVIN SENANU WALLACE

In-app purchases

None

Smart PDF Compressor

No in-app purchases

3 purchases

PDF Compressor | Reduce Size

Subscriptions2
  • All Access$4.997 Days
  • All Access$34.991 Year
One-time1
  • All Access Forever$59.99

Questions

Is Smart PDF Compressor free?
Smart PDF Compressor is free to download, with no in-app purchases.
Is PDF Compressor | Reduce Size free?
PDF Compressor | Reduce Size is free to download, with in-app purchases available.
Do Smart PDF Compressor or PDF Compressor | Reduce Size have ads?
Neither Smart PDF Compressor nor PDF Compressor | Reduce Size shows ads.
Which is updated more often, Smart PDF Compressor or PDF Compressor | Reduce Size?
Smart PDF Compressor ships an update every 9 days, and PDF Compressor | Reduce Size every 3 weeks. Most recently, Smart PDF Compressor was updated on October 31, 2026 and PDF Compressor | Reduce Size on October 31, 2026.

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