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KaiOrb

PDF & Document Instruments

Comprehensive In-Browser PDF Suite

Compress, merge, split, extract, rotate, watermark, encrypt, fill, sign, scan, OCR, compare, and redact PDFs — 100% private in your browser.

Zero Server Uploads: Every byte processing occurs strictly inside your browser environment.

PDF Compression Instrument

Intelligently downsample embedded images and optimize PDF object streams to shrink file size.

Merge & Split PDF Files

Combine multiple PDFs into a single document or split a PDF into separate page ranges.

1. Merge Multiple PDFs


2. Split PDF Document

Images to PDF & PDF to Images

Convert JPG, PNG, WebP images into a PDF document or render PDF pages as high-resolution images.

Images → PDF Document


PDF → High-Res Images

Reorder, Rotate & Delete PDF Pages

Visually inspect each page thumbnail, rotate orientations, or delete unneeded pages.

Add Watermark & Page Numbers

Stamp custom text watermarks or footer page numbers across your PDF document.

Fill, Sign & Annotate PDF

Draw your signature, place text stamps, or add dates directly onto any page.

OCR & Text Extraction Instrument

Extract plain text or perform client-side OCR on scanned documents and image PDFs.

Document Comparison & Redaction

Compare text between two files or black out sensitive personal data (SSN, emails, credit cards).