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Tips, tutorials, and guides to help you get the most out of online tools.
How to Merge PDF Files Online for Free
Combine multiple PDFs into one file in your browser — no install, no watermark. Step-by-step with Synthixx Merge PDF.
How to Compress a PDF Without Losing Quality
Reduce PDF size for email and uploads while keeping text readable. Practical workflow with Synthixx Compress PDF.
OCR a Scanned PDF and Convert to Word
Turn image-only scans into searchable text, then export to Word. Free path using OCR PDF and PDF to Word.
Protect PDF vs Unlock PDF: Which Tool Do You Need?
Password-protect a PDF for sharing, or remove a password you own. Clear intent split so you pick the right Synthixx tool.
Best Free PDF Tools Online in 2026
A practical shortlist of free PDF tools that actually process files — merge, compress, convert, OCR, and AI — without watermarks.
PDF vs Word: When Should You Convert?
Keep PDF for sharing and print fidelity; convert to Word when you must edit. Free conversion path on Synthixx.
How to OCR a PDF Online for Free
Make scanned PDFs searchable and copyable with OCR. Free Synthixx OCR PDF walkthrough.
How to Add a Password to a PDF Online
Protect a PDF with a password before you share it. Free Protect PDF guide on Synthixx Tools.