Frequently Asked Questions

Yes, all our PDF tools are completely free to use with no hidden charges, no registration required, and no file limits.

No, you can use all our tools directly without creating an account or providing any personal information.

Yes! All processing is done locally in your browser using JavaScript. Your files never leave your device and are never uploaded to any server. This ensures 100% privacy and security.

After the initial page load, the core PDF tools work offline. However, a stable internet connection is recommended for the best experience.

We primarily support PDF files. For image conversion tools, we also support JPG, JPEG, PNG, GIF, BMP, and WebP formats.

There is no hard limit set by pdfio.xyz. The maximum file size depends on your browser and device memory. Most modern browsers can handle files up to 100-500MB.

Our tools work best on modern browsers like Chrome, Firefox, Safari, and Edge. We recommend using the latest version of your browser for optimal performance.

Try these steps: 1) Refresh the page and try again, 2) Use a different browser, 3) Check if your PDF is password-protected (we cannot process encrypted PDFs), 4) Try with a smaller file first.

Upload multiple PDF files, drag to reorder them, and click "Merge PDFs". The files are combined in the order you specified into a single PDF document.

Yes! Use the Split PDF tool, select "Split All Pages" mode, and each page will be downloaded as a separate PDF file.

Compression may reduce image quality slightly depending on the compression level you choose. Text and vector graphics remain crisp. Use the "Light" preset for best quality, or "Strong" for smallest file size.

Text extraction works with text-based PDFs (where you can select text). Scanned PDFs or images containing text require OCR (Optical Character Recognition), which is not supported in browser-based tools.

We use JavaScript libraries (pdf-lib, pdf.js) that run entirely in your browser. Your PDF files are processed using your device's CPU and memory, ensuring no data is transmitted over the internet.

Yes! All tools are fully responsive and work on mobile devices. However, for larger PDF files, we recommend using a desktop or laptop computer.

No. We do not store, collect, or transmit any of your PDF files or personal data. All processing happens locally in your browser.