PDFLabz PDFLabz

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Quick answers to the questions we get most often. Still stuck? Contact us.

General

Is PDFLabz really free?

Yes — every basic tool (Merge, Split, Compress, Rotate, Watermark, PDF→JPG, JPG→PDF) is free with no limits, no signup and no watermark on the output. Optional Pro features may exist for AI-heavy tools, but the core toolbox stays free forever.

Privacy

Where do my files go when I use a tool?

For browser-based tools, your file never leaves your device. We use libraries like pdf-lib and pdf.js that run entirely in your browser. We literally cannot see your file because it never reaches our servers.

What about the AI tools (Chat with PDF, OCR)?

For AI-powered features, the document text is sent to the AI provider (Claude, GPT-4o, Gemini, etc.) so the model can answer your question. The provider is configured by the site administrator. We never store your file or conversation beyond the session.

Do you sell my data?

Never. We don't use your files for advertising, profiling or training models. We don't sell anything to data brokers. Read our Privacy Policy for the full details.

Files

What's the maximum file size I can process?

There is no hard cap. The practical limit is your browser's memory — most modern browsers handle PDFs up to 100 MB comfortably. Very large files (500 MB+) may slow down your computer. Tip: close other tabs first.

Which file formats are supported?

PDF for all PDF tools. JPG, PNG, WEBP for image-to-PDF and OCR. The output is always PDF, JPG or DOCX depending on the tool.

Can I process password-protected PDFs?

You'll need to remove the password first using the original viewer (Adobe, Preview on Mac, etc.) or use a dedicated unlock tool. Most browser libraries cannot read encrypted PDFs without the password.

Tools

How do I merge multiple PDFs?

Open the Merge PDF tool, drop your files, drag to reorder, then click Merge.

Will compression reduce my PDF's quality?

Vector text never loses quality. Only embedded images are re-encoded. We offer three presets: Light (150 DPI), Recommended (100 DPI), and Strong (72 DPI) so you can pick the trade-off that suits your file.

What languages does OCR support?

English, French, Arabic, Spanish and 100+ more languages via Tesseract. Higher-resolution scans (300 DPI+) give much better results.

Can I edit text inside a PDF?

Yes — our Edit PDF tool lets you add or replace text, draw shapes and lines, and pick fonts and colors. For complex layouts, converting to Word first may be easier.

Account

Do I need to create an account?

No, the entire toolbox works without an account. An account is only useful if you want to save preferences or use AI tools that require credits.

How do I delete my account?

Email hello@pdflabz.com with the subject "Delete account". We'll process the request within 7 days as required by GDPR.

Technical

Why does the page sometimes load slowly?

Browser-based PDF processing requires loading several JS libraries (pdf-lib, pdf.js, Tesseract for OCR). On the first visit these are cached by your browser, so subsequent visits are much faster.

Does PDFLabz work offline?

Once a tool page is loaded, most operations work without an internet connection because everything runs in your browser. Only AI features require connectivity.

Which browsers are supported?

Chrome, Edge, Safari and Firefox — all latest stable versions. Internet Explorer is not supported.

Business

Do you have an API for developers?

Not yet — but it's on the roadmap. Get in touch via the contact page if you have a use case.

Can I use PDFLabz for commercial work?

Yes. There are no restrictions on commercial use of the free tools. If you process very high volumes (10,000+ files / month), get in touch for a Business plan.

Didn't find what you needed?

We answer every email — usually within one business day.

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