onlineconversion.pro
🔒 100% Client-Side · Nothing leaves your computer

Convert files in your
browser

Fast, private file conversion for web creators. No uploads, no server processing, no privacy violations. Everything happens locally in your browser.

Browse All Tools
0
Files uploaded to servers
6
Conversion tools
∞
Conversions per day

All Converter Tools

🖼️

Image to WebP

Convert PNG, JPG, BMP, GIF to WebP for 25-35% smaller file sizes.

Convert →Go
✨

Image to AVIF

Next-gen image format with superior compression over WebP and JPEG.

Convert →Go
📄

Markdown to PDF

Convert Markdown files to beautiful PDF documents with instant download.

Convert →Go
🎨

SVG to PNG

Export SVG graphics to PNG at any resolution.

Convert →Go
🎬

Video to GIF

Convert WebM, MP4 videos to animated GIFs.

Convert →Go
📸

HEIC to JPG

Convert iPhone HEIC photos to universal JPG format.

Convert →Go

Supported by ads — no tracking beyond page views

How it works

1

Drop your files

Drag & drop or click to select. Up to 10 files at once.

2

Choose output format

Select your target format and hit convert.

3

Download instantly

Your converted file is ready — never touched a server.

Why client-side?

🔒 Privacy

Your files never leave your device. No uploads, no cloud processing, no privacy policy violations.

⚡ Speed

Instant conversion — no waiting for uploads, queue processing, or downloads from server storage.

🌐 Works offline

Once loaded, converters work without internet. Perfect for sensitive documents.

💰 Free forever

No server costs means no reason for paywalls. Unlimited conversions, always free.

Supported by ads — no tracking beyond page views

Frequently Asked Questions

Are my files uploaded anywhere?
No. All conversions happen entirely in your browser using Web APIs like Canvas, Web Codecs, and Web Workers. Your files never leave your computer.
Is there a file size limit?
Since processing happens on your device, the limit is your browser's available memory. Most files under 100MB convert fine.
Do you track conversions?
No. We do not log file types, sizes, names, or any conversion data.
What about file formats not listed?
We are adding new converters regularly. Email hello@onlineconversion.pro and we will prioritize it.