Comparison

PDF Compressor vs PDF Size Reducer

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

Head to head
About

PDF Compressor

Features
Read full description

Compress PDF files quickly, reduce file size, and keep your documents private with PDF Compressor: Reduce PDF. Need to make a PDF smaller for email, work, school, online forms, or document uploads? PDF Compressor helps you reduce PDF file size directly on your iPhone or iPad β€” with no account required and no document uploads to our servers. SMART PDF COMPRESSION Reduce PDF size while preserving text, links, and document structure whenever possible. Smart Compression is ideal for documents where readability and selectable text matter. MULTIPLE COMPRESSION OPTIONS Choose the compression method that fits your needs: β€’ Smart Compression β€” Reduce file size while preserving text and links β€’ Maximum Compression β€” Get a smaller file using stronger compression β€’ Target Size β€” Try to compress your PDF toward 500 KB, 1 MB, 2 MB, 5 MB, or a custom size β€’ Multiple quality options for stronger compression BUILT FOR REAL-WORLD FILE SIZE LIMITS Trying to upload a PDF but the file is too large? Choose a target size and let PDF Compressor reduce the document as much as possible while protecting its structure. Some PDFs are already highly optimized, so the exact target size cannot always be reached. The app clearly tells you when further compression would reduce document quality or make the file larger. PRIVATE β€” YOUR PDFs STAY ON YOUR DEVICE Your PDF documents are processed locally on your device. β€’ No PDF uploads to our servers β€’ No account required β€’ No sign-in required β€’ Your original PDF is never overwritten β€’ Save or share the compressed copy only when you choose PREVIEW BEFORE AND AFTER Preview your PDF before compression and check the compressed version when processing is complete. CLEAR COMPRESSION RESULTS See exactly what happened to your document: β€’ Original file size β€’ Compressed file size β€’ Percentage of space saved β€’ Compression method used β€’ Whether text and links were preserved SAVE AND SHARE EASILY Save your compressed PDF to Files or share it directly using the standard iOS sharing options. PDF Compressor: Reduce PDF is designed to make reducing PDF file sizes simple, fast, and private. Choose a PDF, select your compression method, reduce its size, and save the result.

About

PDF Size Reducer

Features
Read full description

Make oversized PDFs fit forms, email, application portals, and document-upload limitsβ€”without sending your files to a server. CHOOSE THE LIMIT THAT MATTERS Select a maximum size for each PDF: 500 KB, 1 MB, 2 MB, 5 MB, 10 MB, or a custom KB/MB target. PDF Size Reducer analyzes each document and searches for the highest readable quality that fits your chosen limit. REDUCE ONE PDF OR A WHOLE BATCH β€’ Select multiple PDFs at once β€’ See file size and page count before processing β€’ Follow real per-document processing stages β€’ Continue the batch if one file fails β€’ Save or share every completed PDF QUALITY-AWARE REDUCTION The app adapts quality and resolution to the document instead of exposing technical compression controls. It validates the output page count and preserves page order, dimensions, and orientation. If the requested target cannot be reached while keeping a usable PDF, the app labels the best reasonable result instead of claiming success. PRIVATE BY DESIGN PDF processing happens directly on your device. There is no account, no login, no document upload, and no cloud PDF-processing service. Originals are never overwritten. Temporary processing files are cleaned up, and completed files leave the app only when you explicitly save or share them. BUILT FOR REAL DOCUMENT WORK β€’ Maximum size target per PDF β€’ Custom size entry in KB or MB β€’ Controlled batch processing for large files β€’ Clear handling for protected, damaged, or unsupported PDFs β€’ Light and dark appearances β€’ Dynamic Type and VoiceOver support FREE AND PREMIUM ACCESS One successfully generated PDF reduction is included free. The free use is not consumed when file selection is cancelled, processing fails, or no usable target-reaching result is created. Premium unlocks unlimited reductions and batch processing through weekly or yearly auto-renewable subscriptions. Prices, billing periods, and any available offer are supplied by the App Store before purchase. A 3-day free trial is shown for the weekly plan only when the App Store provides that offer and confirms eligibility for the account. Subscriptions renew automatically unless cancelled and can be managed in App Store account settings. Offer availability and eligibility may vary by account and storefront. Privacy Policy: https://asilarslan.github.io/pdf-size-reducer/privacy-policy/ Terms of Use: https://asilarslan.github.io/pdf-size-reducer/terms-of-use/ Support: https://asilarslan.github.io/pdf-size-reducer/support/

Screenshots

PDF Compressor2 screens
PDF Size Reducer4 screens

Verdict

The call

The clearest difference is in-app purchases: PDF Compressor at none against PDF Size Reducer's 2. PDF Compressor also leads on iOS requirement (15.0 vs 17.0). PDF Size Reducer's advantage is ads (none vs shown) and update cadence (every 3 days vs every 8 days). On price and device support there is nothing between them.

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

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

Both are free to download. PDF Size Reducer sells 2 in-app purchases, starting at $9.99 per 7 days. PDF Compressor asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Compressor ships an update every 8 days, PDF Size Reducer every 3 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

Scorecard4 real differences Β· 2 level
PDF Compressor versus PDF Size Reducer: the parameters behind the verdict, then further details
ParameterPDF CompressorPDF Size Reducer
PriceFreeFree
Update frequencyEvery 8 daysEvery 3 days β€” better
AdsYesNo β€” better
In-app purchasesNo β€” betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 β€” better17.0
Further details β€” not scored
Size5 MB1 MB
Age rating4+4+
DeveloperTAREQ ALHUSAINIAsil Arslan

In-app purchases

None

PDF Compressor

No in-app purchases

2 purchases

PDF Size Reducer

Subscriptions2
  • Weekly Plan3 Days trial$9.997 Days
  • Yearly Plan$49.991 Year

Questions

Is PDF Compressor free?
PDF Compressor is free to download, with no in-app purchases.
Is PDF Size Reducer free?
PDF Size Reducer is free to download, with in-app purchases available.
Do PDF Compressor or PDF Size Reducer have ads?
PDF Compressor shows ads; PDF Size Reducer does not.
Which is updated more often, PDF Compressor or PDF Size Reducer?
PDF Compressor ships an update every 8 days, and PDF Size Reducer every 3 days. Most recently, PDF Compressor was updated on October 31, 2026 and PDF Size Reducer on November 10, 2026.

Other comparisons