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SPECIFICTION
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PDFOptim

pdfoptim.com

From $4.99/mo Free plan WebWindowsmacOSiOS
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Spec score 8.3 #9 of 22 in PDF compressors

What it is

PDFOptim provides browser tools to compress, merge, split, rotate, and reorder PDF files, alongside native apps for macOS, iOS, iPad, and Windows. Browser processing uses JavaScript and WebAssembly without uploading files to PDFOptim servers, and the tools work offline after the page has loaded; initial loading and license verification need internet access. Compression offers Web, Standard, Print, and Custom settings, and can reduce PDF size by up to 90%. Compress Only mode strips metadata and compresses internal streams without re-rendering software-created PDFs, preserving selectable text. Multiple PDFs can be batch-compressed, while downloading all results as a ZIP requires Pro. The free plan allows three operations per day on files up to 25 MB. Pro Monthly costs $4.99 a month and includes unlimited operations, files up to 200 MB, and batch ZIP downloads. Lifetime costs $19, paid once, with the same operation and file limits, batch ZIP downloads, future tools, and priority email support. The native apps process documents locally; a 30-day money-back guarantee is also listed.

Spec sheet

Privacy
The web tools run in the browser with JavaScript and WebAssembly, with no file uploads, storage or logs on PDFOptim servers.Read 2 Oct 2026 · pdfoptim.com
Batch processing
Users can drop multiple PDFs for batch compression, and Pro users can download all results as a ZIP file.Read 2 Oct 2026 · pdfoptim.com
Compression
The compressor can reduce PDF size by up to 90% and is intended for scanned documents, radiographs and photos.Read 2 Oct 2026 · pdfoptim.com
Compression presets
Compression presets are Web at 96 DPI/JPEG 60%, Standard at 150 DPI/JPEG 75% and Print at 200 DPI/JPEG 85%, with a Custom mode.Read 2 Oct 2026 · pdfoptim.com
Core tools
PDFOptim provides browser tools to compress, merge, split, rotate and reorder PDF files.Read 2 Oct 2026 · pdfoptim.com
Encrypted files
PDFOptim may not be able to compress all password-protected PDFs and recommends removing the password first.Read 2 Oct 2026 · pdfoptim.com
Native apps
RootRise offers native offline PDFOptim apps for macOS, iOS, iPad and Windows.Read 2 Oct 2026 · rootrisetech.com
Offline use
The web tools work offline after the page has loaded, with internet needed for initial loading and license verification.Read 2 Oct 2026 · pdfoptim.com
On-device security
The native app processes documents locally, stores information on the device and does not send it to RootRise Technologies or third parties.Read 2 Oct 2026 · rootrisetech.com
Refunds
PDFOptim offers a 30-day no-questions-asked money-back guarantee and says refunds are processed within 24 hours by email.Read 2 Oct 2026 · pdfoptim.com
Shortcuts integration
On Mac, PDFOptim can act as a Finder Quick Action through Apple Shortcuts for background compression.Read 2 Oct 2026 · rootrisetech.com
System requirements
The native apps require macOS 12 or later, iOS 15.6 or later, or Windows 10 or later.Read 2 Oct 2026 · rootrisetech.com
Vector PDFs
Compress Only mode strips metadata and compresses internal streams without re-rendering, preserving text selectability for software-created PDFs.Read 2 Oct 2026 · pdfoptim.com

Plans and prices

Free Free forever, no credit card 3 operations per day · up to 25 MB per file · all 4 PDF tools · private processing Read 2 Oct 2026 · pdfoptim.com
Pro Monthly $4.99 a month per month · cancel anytime unlimited operations · files up to 200 MB · batch ZIP download · all 4 PDF tools Read 2 Oct 2026 · pdfoptim.com
Lifetime $19, paid once one-time · use forever unlimited operations · files up to 200 MB · batch ZIP download · all future tools · priority email support Read 2 Oct 2026 · pdfoptim.com

Every PDFOptim plan and price →

Strong points and limits

Strong points

  • Browser tools run without file uploads or server storage
  • Compression can reduce PDF size by up to 90%
  • Free plan includes all four PDF tools
  • Native apps process documents locally

Limits

  • Free plan is limited to three operations per day
  • Free plan files are limited to 25 MB
  • ZIP downloads for batches require Pro

Who it suits

PDFOptim suits people who need browser-based PDF operations or native apps that process documents locally. It may also fit users who want offline browser use after initial loading.

Verdict

PDFOptim covers common PDF tasks, with browser processing and local native apps. The free plan has daily and file-size limits, while paid plans raise those limits and add batch ZIP downloads.

Where Specifiction places it

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