Welcome to FastConverter, a collection of fast, free, and private tools for converting your images right in your browser. My goal is to provide a simple, effective solution without compromising your privacy.
FastConverter is a passion project built by me, a solo developer leveraging over 25 years of web development experience. I began my journey in 1996 as a teen, fascinated by the early internet and the possibility of creating interactive experiences on the web.
The inspiration for FastConverter came from my own experiences using online conversion tools. I often found them cumbersome, slow, or raising privacy concerns with mandatory file uploads. I believed there had to be a better way—a faster, more private, and user-friendly approach. This led me to build the tools I wished existed.
This site is built on a simple philosophy: powerful tools should be accessible to everyone, without paywalls, sign-ups, or data collection. The decision to process everything on your device isn't just a technical choice; it's a commitment to your privacy. Your files never leave your computer, and the conversion happens entirely in your browser using modern web technologies.
FastConverter will always remain completely free to use. There will never be signup requirements, premium tiers, or paywalls. This isn't a freemium model designed to upsell you later - it's a genuine commitment to providing useful tools without barriers.
No account creation means no email collection, no password requirements, and no complex user profiles. You can bookmark the site, use it whenever you need it, and your image files remain completely private on your device. My mission is to offer a user-friendly and genuinely private image conversion experience for everyone.
While your image files never leave your device and are processed entirely in your browser, I want to be completely transparent about how this site operates:
Your Image Files: All image conversion happens locally in your browser. Your files are never uploaded to my servers or any third-party servers. This core functionality is completely private.
Site Analytics: To improve FastConverter and understand how it's used, I use Google Analytics, which collects basic usage data like pages visited and browser type. This helps me identify which tools are most popular and where I can make improvements.
The key distinction is that while I use standard web analytics (like most websites), your actual image files and conversion activities remain completely private and never leave your device.
Advertising: To support the ongoing development and hosting costs of FastConverter, I display advertisements on some pages. These ads may use cookies to show you relevant advertisements. However, this does not affect the privacy of your image conversion process - your files still remain completely local to your device and are never shared with advertisers or any third parties.
FastConverter is built using modern web technologies that enable powerful client-side processing. The core conversion engine leverages HTML5 Canvas API for image manipulation, allowing for real-time processing without server dependencies. Each converter tool uses optimized JavaScript algorithms to handle format conversions while maintaining image quality.
I've designed the site as a progressive web application (PWA) with offline capabilities. Key technologies include:
The privacy-first architecture means your image files never leave your device. All conversion processing happens locally in your browser, and any conversion history is stored locally in your browser's storage, giving you complete control over your image data.
Whether you need to convert a single image or process a batch of files, FastConverter is designed to handle your needs efficiently. The tool works offline once loaded, meaning you can convert images even without an internet connection. This feature reflects my commitment to building robust, user-centric applications.
I'm constantly working to improve FastConverter, adding new features and optimizing performance based on user feedback and emerging web standards. Recent improvements include enhanced HEIC support, better memory management for large files, and improved conversion algorithms for superior output quality.
Thank you for choosing FastConverter and supporting an independent developer's commitment to creating useful, privacy-respecting tools for everyone!
Step-by-step instructions for converting your images from one format to another.
Learn about JPG, PNG, WebP, HEIC, and SVG to understand their unique strengths.
Practical guides on how to resize, compress, and upscale your images.
Master the art of image optimization for websites and social media.