How does PDFLince work without uploading my documents to servers?

PDFLince runs entirely in your browser with an on-device processing engine. No file is uploaded to our servers, which guarantees total privacy and fast processing.

Is PDFLince safe for confidential documents?

Absolutely. Everything stays on your device, so your PDFs never leave your control — not even we can access their contents.

Is there a limit to the size or number of PDFs I can process?

The main limit is your device memory. In most cases PDFLince handles files up to roughly 50MB each, though it can vary depending on your hardware and browser.

Does PDFLince work on mobile devices?

Yes. PDFLince is optimised for desktops, tablets, and phones. The interface adapts to any screen size.

Does PDFLince help me comply with data protection rules?

Because processing happens locally, no personal data leaves your organisation. That makes it easier to comply with GDPR, HIPAA, LGPD, or any internal privacy policy.

Can I use PDFLince for official forms or invoices?

Yes. It’s ideal for optimising invoices, contracts, and public administration paperwork while keeping the original quality.

Will compression affect the legal validity of my documents?

The PDFLince compressor preserves document integrity. Even so, we recommend confirming that the resulting file meets the specific requirements of the receiving entity whenever the stakes are high.

What technology powers PDFLince?

PDFLince uses a lightweight JavaScript engine to manipulate PDFs natively in the browser without relying on native extensions. That keeps the bundle lighter and maintenance simpler.

Do interactive elements get lost when I compress a PDF?

In most cases PDFLince keeps links, forms, and bookmarks. With very aggressive compression some advanced features may be altered, so we recommend double-checking.

Which browsers are compatible with PDFLince?

PDFLince works with modern browsers such as Chrome, Firefox, Safari, Edge, and Opera. All you need is an up-to-date browser with ES2020 support — no extra runtimes required.

Can I convert a PDF to other formats?

Right now you can convert PDFs to images (PNG or JPEG) and build PDFs from JPG, PNG, or WEBP without uploading files. For other niche formats, keep using a dedicated converter while we continue expanding the toolkit.

Compress PDF online with clear results

Reduce document size so it meets email limits, LMS platforms, or public procedures while keeping every page readable.

✓100% local processing — your files never leave the browser✓Choose basic, medium, or aggressive compression depending on your goals✓Preserve metadata and document structure when you need it

Choose an operation

Shrink a PDF to reduce its size. Process one file at a time for the best balance of quality and speed.

Select your files

Click to select or drag and drop PDF files

PDF files (Recommended size: < 2000MB)

Why compress PDFs with PDFLince

Balanced quality

Our compression engine evaluates each resource to deliver the highest reduction without blurring text or graphics.

Ready for submissions

Produce files that pass strict upload limits in government portals, universities, or corporate workflows.

Privacy by design

Skip server uploads and avoid data leaks so you comply with internal privacy policies with zero effort.

How to compress a PDF with PDFLince

Click “Upload your files” and pick the PDF you want to optimize.
Choose the compression level and tweak advanced options like keeping metadata.
Press “Process” and download the compressed document within seconds.

Working with multiple reports? Compress them one by one with no daily limits or watermarks.

When compression makes sense

Send contracts, invoices, or manuals by email without hitting attachment limits.

Upload coursework to Moodle, Canvas, or any LMS that enforces a strict file cap.

Slim down theses, catalogues, or research papers to improve download speed.

Archive records in the cloud while saving storage without losing important details.