PDF conversion is one of the most common document tasks -- extracting text from scanned PDFs, converting pages to images, or merging documents. Online tools like ILovePDF and Smallpdf are convenient, but they require uploading your files to their servers, limit free conversions, and require an internet connection.

These alternatives handle PDF tasks locally on your device, with no upload and no daily limits.

ConvertForge — Extract Text From Scanned PDFs

Local · Browser

ConvertForge

Best for: Converting scanned PDFs to searchable text

ConvertForge is a Chrome extension that extracts text from scanned PDFs entirely inside your browser. No file leaves your device. It uses WebAssembly-based OCR to convert image-based PDFs to searchable .txt or .docx files.

One-click operation: paste a PDF, get the text back. Works offline once installed. See the full guide on converting PDFs to text locally.

Limitation: Requires a Chromium-based browser. Not for obscure document formats like CloudConvert covers.

LibreOffice — Best for PDF Creation and Editing

Local · Desktop

LibreOffice

Best for: Creating PDFs, converting documents

LibreOffice opens PDFs, edits them, and exports documents to PDF format entirely offline. Free and open-source. Works on Windows, Mac, and Linux. Trusted by enterprises for document handling.

Limitation: Not ideal for batch conversion. Heavy install for single-task users.

FFmpeg — Extract Audio or Video From PDFs

Local · CLI

FFmpeg

Best for: Multimedia processing

If your PDF contains embedded video or audio, FFmpeg can extract it. Command-line tool, entirely local processing. Free and open-source.

Limitation: Requires terminal knowledge. Not for typical PDF text extraction.

PDFtk — Split, Merge, and Rotate PDF Pages

Local · CLI

PDFtk

Best for: PDF manipulation without a GUI

PDFtk handles splitting, merging, and rotating PDF pages entirely offline. Lightweight and free. Command-line interface.

Limitation: CLI only. Not for users who prefer graphical tools.

Quick Comparison

Tool Processing Free Offline Best For
ConvertForge Local (browser) ✓ ✓ OCR, text extraction
LibreOffice Local ✓ ✓ PDF creation, editing
FFmpeg Local (CLI) ✓ ✓ Embedded media
PDFtk Local (CLI) ✓ ✓ Page splitting, merging
ILovePDF Cloud Limited ✗ Web-based convenience

Frequently Asked Questions

Can I convert PDFs locally without uploading?
Yes. ConvertForge, LibreOffice, FFmpeg, and PDFtk all process files on your device. Nothing is sent to any server -- your files never leave your machine.
What's the best free PDF converter for OCR?
ConvertForge extracts text from scanned PDFs entirely in your browser with no upload. It converts image-based PDFs to searchable text files automatically.
Do these tools work offline?
ConvertForge, LibreOffice, FFmpeg, and PDFtk all work offline once installed. Cloud-based tools like ILovePDF and Smallpdf require an internet connection.
Related Guides
Best CloudConvert Alternatives (2026) Compare file converters that process locally vs. in the cloud Convert PDF to Text Free -- Local OCR Extract text from scanned PDFs without uploading the file

Try ConvertForge — Extract Text From PDFs Locally

Convert scanned PDFs to searchable text, extract text from images, convert HEIC photos -- all inside your browser without uploading.

Add to Chrome -- Free