OmniPDF & Studio — 100% Free & Private In-Browser PDF & Image Power Suite

Professional PDF markup studio, Apple HEIC converter, vector cropper, AES-256 PDF encryption, and toner saver. 100% client-side browser processing with zero server uploads and unlimited usage.

19 Free Client-Side PDF, Office & Image Tools

PDF to Word Converter

Convert PDF files to editable Microsoft Word (.docx) documents in your browser. Preserves text flow, headings, bullet lists, and paragraphs with zero server uploads.

Word to PDF Converter

Convert Microsoft Word (.docx) files into clean, print-ready A4 PDF documents. Converts standard headings, body text, lists, tables, and images directly in your browser.

PowerPoint to PDF Converter

Convert Microsoft PowerPoint (.pptx) slides and decks into 16:9 widescreen presentation PDFs client-side without sharing confidential company decks.

ZIP Extractor & Archive Explorer

Open and extract ZIP archives online. Preview images, text files, and code before downloading, with instant single-file or full-archive extraction.

Extract Images from PDF

Render and export high-resolution 2x PNG images from your PDF document pages. Download pages individually or bundled into a convenient ZIP archive.

Flatten PDF Document

Permanently solidify fillable form fields, checkboxes, digital signatures, and comments into unalterable static pages for security and exact printing.

PDF Studio & Annotator

Annotate PDFs with smooth vector pen, fluorescent highlighter, shapes, text boxes, permanent blackout redaction, and digital signature placement.

Apple HEIC to JPG / PNG Converter

Batch convert iPhone and iPad HEIC/HEIF photos into full-resolution JPG or PNG format using WebAssembly with 1-click ZIP download.

Protect & Encrypt PDF (AES-256)

Client-side standard AES-256 encryption using the W3C Web Cryptography API. Set User & Owner passwords and restrict printing or copying.

Lossless PDF Cropper

Crop visible PDF margins by adjusting internal ISO CropBox vectors, maintaining sharp vector text without re-rasterizing.

Watermark & Page Numbers

Add custom diagonal or horizontal text watermarks, logo image stamps, and dynamic "Page X of Y" page numbers to any PDF.

PDF Grayscale & Toner Saver

Convert color PDFs to monochrome grayscale to save up to 70% printer toner, or use High-Contrast mode to clean up dirty scans and receipts.

PDF Metadata & Anonymizer

Inspect hidden creator metadata, author usernames, and software fingerprints. Scrub document property fields and edit timestamps with 1 click.

Biometric Passport & Visa Photo Maker

Generate official 2x2 inch (US) and 35x45mm (Schengen) passport photos with alignment biometric guides and printable 4x6 inch sheets.

Batch Image Converter & Compressor

Convert PNG, JPG, and WebP images in batch with quality controls, real-time byte savings comparison, and 1-click ZIP export.

PDF Merge, Split & Compress

Combine multiple PDF documents, extract page ranges, or compress oversized PDFs down to under 2MB for visa, job, and government portals.

Frequently Asked Questions

Are my confidential documents uploaded to any remote server?

No. OmniPDF operates 100% on client-side technology using WebAssembly and HTML5 Web Workers. Files are decoded and processed in your browser memory with zero server uploads.

Can I convert Apple iPhone HEIC photos to JPG without installing software?

Yes. The in-browser WebAssembly libheif decoder enables batch conversion of iPhone HEIC/HEIF photos directly into high-resolution JPG or PNG formats with a 1-click ZIP download.

How does lossless PDF cropping work?

OmniPDF modifies the internal vector CropBox and MediaBox parameters defined in the ISO PDF specification, preserving 100% of the vector text sharpness and diagrams.

How secure is client-side AES-256 PDF encryption?

We utilize the W3C Web Cryptography API and standard PDF 2.0 AES-256 encryption. Encrypted documents cannot be opened or extracted without the correct user or owner password.