Preguntas Frecuentes (FAQ)

No. Zero files are uploaded to our servers. Small-PDF.pro executes all image processing, decoding, and PDF generation 100% locally inside your web browser using WebAssembly and client-side JavaScript. Your files never leave your device.

Yes. Because no data or documents are ever transmitted across the network or stored in external databases, using Small-PDF.pro does not create third-party data processing exposure, making it safe for medical records, student worksheets, and legal discovery files.

You can press F12 to open your browser Developer Tools, switch to the Network tab, and process a file. You will see zero outbound POST requests or byte transfers carrying your document data.

Our engine natively supports JPG/JPEG, PNG, WEBP, Apple HEIC/HEIF, GIF, and BMP formats. You can mix and match different formats in a single conversion batch.

Windows does not include the patented HEVC/HEIF codec by default due to licensing royalties. Small-PDF.pro embeds self-hosted WebAssembly decoders directly into the webpage, allowing you to convert iPhone HEIC photos into universal PDFs on any Windows PC for free.

We enforce no artificial limits. The only constraint is your computer or smartphone RAM. Most modern devices comfortably convert batches of 50 to 100 high-resolution photos into a single PDF in seconds.

Select US Letter (8.5 × 11 inches) if you are in the United States, Canada, or Mexico. Select A4 (210 × 297 mm) for Europe, the United Kingdom, Asia, Australia, Latin America, and international correspondence.

Fuzzy printing happens when low-resolution images (under 150 DPI) are stretched across full paper dimensions. To ensure crisp text and sharp prints, use source images that are at least 2000 pixels wide (around 200 to 300 DPI for A4).

Yes. Each thumbnail card in our workspace has an interactive 90-degree rotate button. You can rotate individual horizontal or vertical photos until every page matches your preferred layout.

Yes, provided you are the copyright owner, have explicit permission from the creator, or are redacting draft stamps, internal sample notices, or confidential data under lawful fair use. Removing watermarks to infringe copyright or falsify documents is strictly illegal.

Our tool uses PDF.js to render your document onto an interactive canvas. You draw whiteout bounding boxes directly over obsolete stamps or confidential numbers, and our engine exports a clean, redacted document entirely within your browser.