Privacy-First Architecture

Secure PDF Tools for Professionals

The only online PDF suite where your data never leaves your device. Merge, split, and convert documents using your browser's local processing power.

No Server Uploads

No File Size Limits

Available Operations

27 Tools available

PDF Merger

Combine multiple PDF files into one document while maintaining original quality. Intuitive drag-and-drop interface with unlimited page support.

PDF Splitter

Split PDF files online free. Extract pages, split by range, or separate all pages into individual PDFs. No upload required, works in your browser.

PDF Compressor

Compress PDF files to reduce file size without losing quality. Free online PDF compressor with customizable compression levels and batch processing.

PDF to Image Converter

Convert PDF pages to PNG or JPG images instantly. Free online PDF to image converter with high-quality output, batch processing, and multiple format support.

PDF Signature Tool

Add digital signatures to PDF documents. Draw, type, or upload your signature and place it anywhere on your PDF. Free online PDF signing tool.

EPUB to PDF Converter

Convert EPUB e-books to PDF format with customizable layout, fonts, and margins. Preserve formatting, images, and table of contents.

Image to PDF Converter

Convert multiple images to PDF instantly. Free online tool to combine JPG, PNG, GIF images into a single PDF document with customizable layout and quality settings.

PDF Annotation Tool

Mark up PDFs with highlights, comments, drawings, and sticky notes. Free online PDF annotation tool with no registration required.

PDF Background Remover

Remove backgrounds from PDF pages instantly. Clean up scanned documents, remove watermarks, and enhance readability with intelligent background detection.

PDF Certificate Maker

Create professional certificates with merge fields for bulk generation. Upload templates, add data, and generate personalized certificates instantly. Free certificate maker.

PDF Color Analyzer

Analyze color profiles, spaces, and usage in PDF documents. Extract color palettes, detect ICC profiles, and ensure print-ready color compliance.

PDF Editor Pro

Complete PDF editor with merge, reorder, delete pages, and image-to-PDF conversion. Edit multiple PDFs and images in one powerful tool.

PDF Font Analyzer

Analyze and extract all fonts used in PDF documents. Get detailed information about font families, types, embedding status, and character usage.

PDF Image Extractor

Extract all images from PDF files instantly. Free online tool to extract JPG, PNG images from PDF documents with batch download options.

PDF Metadata Editor

Edit PDF metadata online free. Change title, author, subject, keywords, and other document properties. View and modify PDF information instantly in browser.

PDF OCR Tool

Convert scanned PDFs and images into searchable, editable text. Advanced OCR technology with support for multiple languages and batch processing.

PDF Page Deleter

Delete pages from PDF documents online. Remove blank pages, confidential info, or duplicates. Secure, local browser processing.

PDF Page Numbering

Add page numbers to PDF files instantly. Free online tool to insert custom page numbers with various styles, positions, and formatting options.

PDF Page Reorderer

Reorder PDF pages online free. Drag and drop pages to rearrange, move pages to any position, or reverse page order. Organize your PDF instantly in browser.

PDF Page Rotator

Rotate PDF pages online free. Rotate individual pages or all pages at once by 90°, 180°, or 270°. Fix orientation issues instantly in your browser.

PDF Password Protector

Protect PDF with password online free. Add password security, set permissions, encrypt PDFs with 128-bit or 256-bit AES encryption. Secure your documents instantly.

PDF Password Remover

Remove PDF password online free. Unlock password-protected PDFs by entering the correct password. Remove encryption and make PDFs accessible without passwords.

PDF Portfolio Creator

Create professional PDF portfolios by combining multiple documents with cover pages, table of contents, and custom styling. Free online portfolio maker.

PDF Redactor

Securely black out sensitive information in PDF documents. Free online PDF redaction tool with client-side processing for maximum privacy.

PDF Table Extractor

Extract tables from PDFs and convert to CSV or Excel format. Free online PDF table extraction tool with no registration required.

PDF to Text Extractor

Extract text from PDF files instantly. Free online PDF text extractor with OCR support, batch processing, and multiple export formats for easy text extraction and editing.

PDF Watermark Adder

Add watermarks to PDF online free. Insert text or image watermarks with custom position, opacity, rotation. Protect documents with professional branding instantly.

Why process PDFs Client-Side?

Most PDF websites upload your files to a cloud server to process them. This creates a privacy risk for sensitive documents. Selqio is different.

For Data Analysts

Need to merge sensitive BI reports or extract tables from confidential datasets? Our tools run locally, ensuring strict data compliance (GDPR/CCPA) since the data never leaves your firewall.

For Legal & HR

Redact sensitive info or sign contracts without third-party exposure. Your employee records and legal agreements stay on your computer, eliminating the risk of cloud data breaches.

Maximum Performance

Working with 500MB+ blueprints or manuscripts? Skip the upload/download wait time. Browser-based WebAssembly processing is often faster than server-side alternatives for large files.

Frequently Asked Questions

Are my files uploaded to your server?

No. Selqio uses client-side technology. All code runs within your browser. Your PDF files never travel over the internet to us.

Is this PDF toolkit free to use?

Yes, all tools on this page are completely free. There are no hidden paywalls, watermarks, or registration requirements.

Can I use these tools on mobile?

Yes, Selqio is optimized for mobile devices. You can merge, split, and compress PDFs directly on your iPhone or Android device.

What is the file size limit?

Since we don't host your files, there is no artificial upload limit. The limit depends only on your device's available processing power (RAM).