Comparison

Batch PDF Compressor SquashPDF vs Shrink PDF

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

Head to head
About

Batch PDF Compressor SquashPDF

This tool efficiently reduces PDF file sizes without compromising quality. It allows users to select a target file size and offers batch compression for multiple documents. A preview feature helps verify quality before saving.

Highlights
  • Compress single or multiple PDFs
  • Select target file size
  • Batch compression
  • Side-by-side quality preview
  • Local history of compressions
Features
Read full description

SquashPDF is a fast PDF compressor for iOS that shrinks PDF file size without destroying quality. Reduce a 50 MB contract to under 5 MB, fit a scanned passport into an email attachment, or hit a strict upload limit. What SquashPDF does - Compresses single or multiple PDFs in one tap - Lets you pick a target size (e.g. under 1 MB, under 5 MB, under 10 MB) instead of guessing quality levels - Batch-compresses entire folders of PDFs at once - Shows a side-by-side preview so you can verify quality before saving - Keeps a history of every compression with original vs. final size FAQ -> How much can SquashPDF reduce a PDF? Typically 60–90% for image-heavy PDFs (scans, photos). Text-only PDFs see smaller reductions because text is already efficiently encoded. -> Does SquashPDF work offline? No. Files are uploaded to our server for processing, they are not tied to your identity and are automatically deleted after two hours. -> Will compression ruin the quality of my PDF? No. Pick a target size and SquashPDF balances quality automatically. Use the side-by-side preview to compare before saving. -> Can I compress multiple PDFs at once? Yes. Batch mode compresses dozens of PDFs in one run and saves them with the original filenames. -> Is SquashPDF free? Core compression is free (daily limit of 1 pdf). SquashPDF Pro unlocks unlimited batch compression, larger files, and removes limits. -> Which file types are supported? PDF only. For best results, use SquashPDF on PDFs containing scans, photos, or screenshots — that's where the biggest savings come from. Download SquashPDF and stop fighting upload limits. Terms of use - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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/

Screenshots

Batch PDF Compressor SquashPDF4 screens
Shrink PDF4 screens

Verdict

The call

The clearest difference is ads: Batch PDF Compressor SquashPDF at none against Shrink PDF's shown. Shrink PDF's advantage is update cadence (every 3 days vs every 4 weeks) and device support (3 vs 1). On price, in-app purchases and iOS requirement 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. Batch PDF Compressor SquashPDF sells 3 in-app purchases, starting at $3.99 per month and Shrink PDF sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Batch PDF Compressor SquashPDF ships an update every 4 weeks, Shrink PDF every 3 days. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.

Scorecard3 real differences · 7 level
Batch PDF Compressor SquashPDF versus Shrink PDF: the parameters behind the verdict, then further details
ParameterBatch PDF Compressor SquashPDFShrink PDF
PriceFreeFree
Rating3.5 (2 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 weeksEvery 3 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.615.0 — better
Further details — not scored
Size27 MB39 MB
Age rating4+4+
DeveloperYash Mandhyanhiroki kawamura

In-app purchases

3 purchases

Batch PDF Compressor SquashPDF

Subscriptions3
  • Monthly Plan$3.991 Month
  • Weekly Subscription$4.997 Days
  • Yearly Subscription$14.991 Year
1 purchases

Shrink PDF

Subscriptions1
  • Ad-Free PDF Shrinking$1.991 Month

Questions

Is Batch PDF Compressor SquashPDF free?
Batch PDF Compressor SquashPDF is free to download, with in-app purchases available.
Is Shrink PDF free?
Shrink PDF is free to download, with in-app purchases available.
Do Batch PDF Compressor SquashPDF or Shrink PDF have ads?
Shrink PDF shows ads; Batch PDF Compressor SquashPDF does not.
Which is updated more often, Batch PDF Compressor SquashPDF or Shrink PDF?
Batch PDF Compressor SquashPDF ships an update every 4 weeks, and Shrink PDF every 3 days. Most recently, Batch PDF Compressor SquashPDF was updated on September 22, 2026 and Shrink PDF on September 26, 2026.

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