Comparison

Shrink PDF vs PDF Compressor

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

Head to head
About

Shrink PDF

Features
Read full description

"File is too large." Seeing that right before a deadline is a special kind of stress. Shrink PDF makes heavy PDFs small enough to attach to an email. Pick a PDF, pick how much to compress, done. ◆ See exactly how much smaller it got ・The size before and after sit side by side, in big clear numbers ・In one measured example, 10.3 MB became 1.0 MB (about 90% smaller) ・How much you save depends on what is inside your PDF ◆ Three compression levels, all included ・For email — when it just has to be small ・Standard — a balance of size and appearance ・High quality — stays sharp, still lighter ・None of them are locked behind a purchase. You get all three ◆ Nothing is sent to a server ・Compression happens entirely on this device ・Your PDF is never uploaded anywhere ・Safe for contracts, invoices, scanned IDs and anything else you would rather not hand to a website ・Works with no internet connection at all ◆ Made for moments like ・A form that only accepts files up to 10 MB, and yours is bigger ・An email that bounced back because the attachment was too heavy ・Scanned paperwork that somehow takes several MB per page ・A university or workplace portal that refuses your upload ・A contract or invoice you need to send a client, but it is too large 【How the compression works】 This app rebuilds each page as an image to bring the size down. Because of that, text in the compressed PDF can no longer be selected, copied or searched. Your original file is left untouched, so you can keep both and use whichever fits. 【About Premium】 The app is free to use and the compression features are not limited in any way. The free version shows ads. Premium — an auto-renewing monthly subscription — removes all ads from the app. ・Payment is charged to your Apple ID account at confirmation of purchase ・The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period ・Manage or cancel in your device Settings → Apple ID → Subscriptions ・There is no free trial period Privacy Policy: https://hecuhecu.github.io/apps/pdf-compress/privacy/ Terms of Use: https://hecuhecu.github.io/apps/pdf-compress/terms/

About

PDF Compressor

Easily reduce the size of PDF files by up to 90% without sacrificing quality. This tool offers multiple compression levels and batch processing, making it ideal for emailing documents, saving storage, and meeting upload size limits.

Highlights
  • Compress PDFs up to 90%
  • 6 compression levels
  • Batch compression
  • Organize with folders
  • Secure file processing
  • Manage and preview files
Features
Read full description

Compress PDF files in seconds — reduce file size by up to 90% without losing quality! PDF Compressor is the fastest and easiest way to compress PDF files right from your iPhone or iPad. Whether you need to email a large document, save storage space, or upload a PDF with a size limit, our powerful compression engine shrinks your files while keeping them crystal clear. WHY CHOOSE PDF COMPRESSOR? SUPER FAST COMPRESSION Compress your PDF files in just a few taps. Import, choose a quality level, and get your compressed PDF in seconds. UP TO 90% SMALLER Dramatically reduce PDF file size. Turn a 30 MB document into just a few hundred KB — perfect for email attachments, messaging apps, and online uploads. 6 COMPRESSION LEVELS Choose the perfect balance between size and quality: • No Quality Loss – keeps original quality (~10% reduction) • Light Compression – best for text-heavy documents (~30%) • Balanced – great for long-term storage (~50%) • Web Optimized – ideal for sharing online or by email (~55%) • Screen Optimized – perfect for reading on screens (~60%) • Print Quality – high-quality output ready for printing (~40%) BATCH COMPRESSION Compress multiple PDF files at the same time and save hours of work. ORGANIZE WITH FOLDERS Create folders to keep your work, school, and personal PDFs perfectly organized. Share an entire folder at once. MANAGE YOUR FILES Open, preview, share, rename, move, or delete your compressed PDFs anytime. Track your total storage saved and average reduction right from the home screen. YOUR PRIVACY MATTERS Your files are processed securely and deleted immediately after compression. We never store or access your documents. BEAUTIFUL DESIGN A clean, modern interface that automatically adapts to light & dark mode, with full support for the latest iOS design. PERFECT FOR: • Students – compress lecture notes, assignments, and study materials • Professionals – email contracts, reports, and presentations without size limits • Everyone – free up storage space on your device and in the cloud HOW IT WORKS: 1. Import your PDF files from Files, or any app 2. Choose your compression level 3. Tap "Compress now" and you're done! Your compressed PDFs are ready to share, save, or organize in seconds. PREMIUM SUBSCRIPTION PDF Compressor offers optional in-app purchases and auto-renewable subscriptions to unlock unlimited compressions and premium features. • Payment will be charged to your Apple ID account at confirmation of purchase. • Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • You can manage and cancel your subscriptions anytime in your App Store account settings after purchase. • Any unused portion of a free trial period will be forfeited when you purchase a subscription. Privacy Policy: https://techcreativelab.com/apps/pdf-compressor/privacy.html Terms of Use: https://techcreativelab.com/apps/pdf-compressor/terms.html Download PDF Compressor now and make your PDFs smaller, faster, and easier to share!

Screenshots

Shrink PDF4 screens
PDF Compressor4 screens

Verdict

The call

The clearest difference is ads: PDF Compressor at none against Shrink PDF's shown. PDF Compressor also leads on update cadence (every 3 days vs every 8 days). Shrink PDF's advantage is iOS requirement (15.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Shrink PDF sells 2 in-app purchases, starting at $1.99 per month and PDF Compressor sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Shrink PDF ships an update every 8 days, PDF Compressor every 3 days. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Shrink PDF versus PDF Compressor: the parameters behind the verdict, then further details
ParameterShrink PDFPDF Compressor
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 8 daysEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size39 MB26 MB
Age rating4+4+
Developerhiroki kawamuraTechCreative Lab LLC

In-app purchases

2 purchases

Shrink PDF

Subscriptions1
  • Ad-Free PDF Shrinking$1.991 Month
One-time1
  • Ad-Free Forever$17.99
3 purchases

PDF Compressor

Subscriptions3
  • Week$1.997 Days
  • Month$6.991 Month
  • Year$29.991 Year

Questions

Is Shrink PDF free?
Shrink PDF is free to download, with in-app purchases available.
Is PDF Compressor free?
PDF Compressor is free to download, with in-app purchases available.
Do Shrink PDF or PDF Compressor have ads?
Shrink PDF shows ads; PDF Compressor does not.
Which is updated more often, Shrink PDF or PDF Compressor?
Shrink PDF ships an update every 8 days, and PDF Compressor every 3 days. Most recently, Shrink PDF was updated on October 29, 2026 and PDF Compressor on October 31, 2026.

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