Most online file converters upload your images and PDFs to a remote server, process them there, and send them back. That means your files — potentially containing sensitive documents, personal photos or confidential designs — pass through someone else's infrastructure. AllOmniTools does it differently: everything runs in your browser using the HTML5 Canvas API and JavaScript libraries.
Privacy first: All conversions happen in your browser's memory. Your files are never transmitted to any server. The result is downloaded directly to your device.
Supported Formats
Image Converters
JPG to PNG
Convert JPEG images to PNG for lossless quality and transparency support. Ideal for logos, screenshots and graphics that need a transparent background. Supports batch conversion and custom max dimensions.
PNG to WEBP
WEBP files are 25–35% smaller than PNG at equivalent quality. Converting your images to WEBP before uploading to a website significantly improves page load speed and Core Web Vitals scores.
WEBP to JPG
Some older apps and platforms don't support WEBP. Convert back to JPG for universal compatibility with a single click.
Image Resizer
Resize images by exact pixel dimensions, max width/height (preserving aspect ratio) or percentage. Supports JPG, PNG and WEBP. Batch processing lets you resize multiple files at once.
Favicon Generator
Upload any image and generate a favicon.ico plus PNG sizes (16×16, 32×32, 48×48, 192×192, 512×512). Everything you need for a complete browser and PWA icon set.
PDF Tools
Image to PDF
Combine multiple images into a single PDF document. Useful for creating portfolios, reports or sending multiple screenshots as one file. Uses jsPDF for client-side PDF generation.
PDF to Image
Extract every page of a PDF as a JPG or PNG image. Powered by PDF.js — the same library Mozilla uses in Firefox. No server required.
Why No Upload Matters
When you upload a file to a third-party converter:
- Your file is stored on their servers (often indefinitely)
- It may be used for training AI models
- It could be accessed by employees or breached by hackers
- GDPR and HIPAA compliance becomes your problem
With AllOmniTools, the file never leaves your device. The conversion happens in your browser's memory and the result is downloaded directly to your computer.
Tip: All AllOmniTools file converters work offline after the first page load. Save the page to your bookmarks and use it even without internet access.