FusionPDF Blog

iLovePDF uploads files to EU servers and deletes them in 2 hours. FusionPDF never uploads. Here's when the difference matters — and how to verify either tool yourself.

Light mode is lossless. Aggressive re-encodes images. Here's how to pick the right compression level — and why it matters which tool you use for confidential files.

Lossless quality, no watermark, no file size cap. Plus: when to use Split or Interleave instead — and why upload matters when assembling confidential documents.

Gmail caps at 25 MB. Base64 adds 33% in transit. Here's how to extract pages without sending your whole document to any server — and the syntax for page ranges.

The FBI warned in 2025 that fake file converter sites deploy ransomware. FusionPDF uses mammoth.js and jsPDF to convert DOCX locally — nothing sent to any server.

Owner-locked PDFs can be unlocked client-side with PDF.js — no software, no upload. Here's when it works, when it doesn't, and why browser-based unlocking is safer than any upload tool.

Rotate one page or every page — 90°, 180°, or 270°. Changes are applied in-browser using PDF-lib; the file never leaves your device and quality is lossless.

Pick position, font, size, and starting number. PDF-lib renders the numbers directly into the PDF stream — no rasterization, no quality loss, no upload.

SheetJS parses your XLSX locally and outputs a clean, printable PDF. No $9.99/month subscription, no upload — and formulas stay as values so there's nothing to leak.

Gmail caps at 25 MB and many portals require under 2 MB. Here's the exact workflow — Light, Aggressive, or split-compress-merge — to hit a target size without losing readability.

Combine multiple JPG, PNG, or WEBP images into one PDF — drag to reorder, choose A4 or Letter, adjust margins. Everything runs client-side; works on mobile too.

Extract selectable text or run OCR on scanned documents with Tesseract.js. Copy directly or download a .txt file — no upload, and OCR accuracy exceeds 95% on clean scans.

PDF.js renders every page to a canvas element and exports JPG or PNG at your chosen DPI — 72 for web, 150 for email, 300 for print. Download all pages as a ZIP.

Highlight-and-delete is not redaction. Here's how to permanently remove sensitive content — flattened, unrecoverable — without uploading your document to any server.

Draw, type, or upload your signature and place it on any PDF page. The signature is flattened into the PDF locally — no upload, no account, no printing required.