The Browser-Based Online-Convert Alternative
Convert files and data privately in your browser — no uploads and no waiting in a queue.
Online-Convert is a broad conversion service, but it uploads your files and applies limits on the free tier. Crystal Toolkit handles popular image, PDF and data conversions locally, so your files stay on your device and results are instant. It's free with no sign-up.
| Feature | Crystal Toolkit | Online-Convert |
|---|---|---|
| Price | 100% free | Free tier + paid plans |
| Processing | In your browser (local) | Uploaded to servers |
| Conversions per day | Unlimited | Limited on free tier |
| Account required | No | For higher limits |
| Privacy | Nothing uploaded | Files uploaded & queued |
Comparison based on the common service model and publicly available information; competitor features may change.
Try these free tools instead
JPG to PNG Converter
Convert JPG images to lossless PNG.
PNG to WebP Converter
Convert PNG images to smaller WebP.
JPG to PDF
Convert JPG and PNG images into a single PDF.
Base64 Encoder
Encode text to Base64 (UTF-8 safe).
Image Compressor
Compress JPG, PNG and WebP images in your browser.
Why switch to Crystal Toolkit?
Crystal Toolkit is free forever, requires no account, and processes everything in your browser so your files and data stay private. It is built and maintained by CrystalSoftonic.
Frequently asked questions
Is it really unlimited?
Yes — because conversions run on your device, there are no daily caps.
Do I have to upload my files?
No — files are processed locally and never uploaded.