Free Online File Converter Zero Uploads. Total Privacy.
SwiftConvert processes your images, PDFs, and videos directly inside your browser using WebAssembly. Files never leave your device — no uploads, no waiting, no accounts.
18+
Free Tools
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Files Uploaded
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Browser-Based
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Account Setup
18+ Free Conversion Tools
Select a tool to start converting instantly. No uploads, no accounts, no waiting.
Images
Convert PNG images to smaller JPG format.
Convert JPG to lossless PNG with transparency.
Change WebP to universally supported JPG.
Convert iPhone HEIC photos to JPG.
Convert JPG to modern WebP for smaller sizes.
Convert PNG to modern WebP format.
Rasterize SVG vector graphics to PNG.
Resize images to any custom dimension.
Convert JPG, PNG, or WebP images to PDF.
PDF Tools
How It Works
Three steps, no surprises.
Select Your File
Drag and drop or click to browse. Supports images, PDFs, and videos up to 500MB.
Convert in Browser
Your file is processed locally using WebAssembly. Nothing is uploaded to any server.
Download Instantly
Your converted file is ready in seconds. Download it directly to your device.
Why SwiftConvert?
Unlike Smallpdf or ILovePDF, your files never leave your device.
| Feature | SwiftConvert | Smallpdf | ILovePDF |
|---|---|---|---|
| No file uploads | ✓ | ✗ | ✗ |
| No account required | ✓ | ✗ | ✗ |
| 100% free tools | ✓ | ✗ | ✗ |
| Works offline (PWA) | ✓ | ✗ | ✗ |
| Client-side processing | ✓ | ✗ | ✗ |
| Video conversion | ✓ | ✗ | ✗ |
HEIC vs JPG: The Complete Guide to iPhone Photo Formats
Apple switched iPhones to HEIC by default — but what exactly is it, how does it compare to JPG, and when should you convert? Everything you need to know.
How to Reduce PDF File Size Without Losing Quality (2026)
Large PDFs are a headache to email and share. Here are the most effective techniques to shrink PDF file size — including free browser-based methods.
WebP vs JPG vs PNG: Which Image Format Should You Use?
Choosing the right image format affects file size, quality, and compatibility. This guide breaks down when to use WebP, JPG, or PNG for different use cases.
Why Offline Conversion Matters
Traditional converters force you to upload sensitive documents to their servers — creating privacy risks and upload delays. SwiftConvert uses modern WebAssembly and Canvas APIs to run conversion algorithms directly in your browser. Your files stay on your device, every time.
Zero Data Exposure
Files never touch our servers
Instant Processing
No upload queue, no waiting
Works Offline
Install as a PWA, convert anywhere