Free Online PDF Encrypt / Decrypt Tool tool icon
PDF AES-256 Encryption • Local-only

Free Online PDF Encrypt / Decrypt Tool

Encrypt and decrypt PDF files locally in your browser using AES-256-GCM with PBKDF2(SHA-256). The tool encrypts the entire PDF into a JSON payload that you can save, and later decrypt with your password to restore the original PDF, ideal for private document backup and temporary transfer.

How it works
Because a static site cannot create standard PDF “open passwords”, this tool uses AES-256-GCM + PBKDF2(SHA-256) to encrypt the entire PDF into a JSON payload. As long as you keep the password, you can decrypt the JSON back into the original PDF within this tool.
Input
Encrypted output JSON
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Images to PDF

Images to PDF

Merge multiple images into a single PDF with page size, DPI, margin and background color control, all generated locally in your browser with zero uploads.

Lightweight PDF Compressor

Lightweight PDF Compressor

Rewrite and optimize PDF structure locally to try reducing file size.

PDF Page Extractor

PDF Page Extractor

Extract selected PDF pages to a new PDF or per-page ZIP locally.

PDF Page Merger

PDF Page Merger

Merge and reorder multiple PDFs locally with per-file page ranges.

PDF Page Rotator

PDF Page Rotator

Rotate all or selected PDF pages by 90/180/270 degrees locally.

PDF Splitter

PDF Splitter

Split or extract PDF pages locally in your browser with no uploads.

PDF Stamp / Watermark

PDF Stamp / Watermark

Stamp or watermark PDFs locally in your browser with no uploads.

PDF to Images

PDF to Images

Convert PDF pages to PNG/JPG images and download as a ZIP with adjustable page range and render scale, processed fully in the browser.

PDF to Text

PDF to Text

Extract text from PDFs locally and export as TXT or ZIP, with no uploads.

PDF TOC Generator

PDF TOC Generator

Generate TOC pages for your PDF from a “page number + title” list and insert them locally without uploads.

PDF Page Trimming

PDF Page Trimming

Remove pages from a PDF locally in your browser and download a slimmer copy without uploads.

PDF merge

PDF merge

Merge multiple PDF files locally in your browser with ordering and page ranges.

DOCX Viewer

DOCX Viewer

Preview .docx files and print / save them as PDF directly in your browser with no uploads.

Markdown to PDF

Markdown to PDF

Paste or upload Markdown, preview it and export through the browser print dialog to PDF. All processing runs locally in your browser.