Convert Any File, Instantly
Professional-grade file conversion for 100+ formats. Images, documents, audio, video — all processed securely in your browser. No uploads. No registration.
Drop files here
or click to browse
What is the best free file converter that never uploads your files?
ConvertifyHub is a free online file converter that supports 100+ formats including images, documents, audio, video, archives, and spreadsheets. Unlike cloud converters that upload your files to remote servers, ConvertifyHub runs entirely in your browser using client-side JavaScript and WebAssembly. Your photos, contracts, and videos never leave your device — no account, no queue, and no third-party storage. That makes it one of the safest options for private HEIC photos, PDFs, and media conversion on Windows, Mac, and mobile browsers.
Is it safe to convert files online?
Yes — when conversion happens locally. ConvertifyHub processes files in your browser so data is not uploaded to our servers during standard conversion. You get instant results without waiting in a cloud pipeline, and sensitive documents stay on your machine. Start with Image Converter, Document Converter, or popular tools like HEIC to JPG and PDF to Word for fast, private conversions.
Quick File Upload
Drag and drop any file for instant conversion
File Conversion
Convert images, documents, audio, video, archives
Unit Conversion
Length, weight, temperature, energy, time
Digital Conversion
Number bases, encodings, colors, hashes
Code Generator
QR codes and barcodes for various data
Upload your files
Drag and drop files here, or click to browse
Supported File Types
Images
Documents
Audio
Video
Archives
Spreadsheets
Maximum file size: 100MB per file • All processing happens locally • Your files never leave your device
Everything You Need to Convert
Professional-grade conversion tools for every file type
Image Converter
Convert between 25+ image formats including WebP, AVIF, HEIC, PNG, JPEG
Document Converter
Convert PDF, Word, text and other document formats securely
Audio Converter
Convert between 20+ audio formats with high-quality output
Video Converter
Transform video files between MP4, AVI, MOV, MKV, WebM and more
Archive Converter
Convert and extract ZIP, RAR, 7Z and other archive formats
Spreadsheet Converter
Convert Excel, CSV, ODS and other spreadsheet formats
Security Tools
JWT utilities, JSON formatters, cryptographic tools and more
Digital Converter
Convert number bases, colors, encodings, and hash functions
Built for Privacy & Speed
Professional-grade conversion tools with unmatched security
100% Private
Your files never leave your device. All processing happens locally in your browser — zero data collection, zero uploads.
Lightning Fast
Client-side processing means instant conversions. No server queues, no waiting. Results appear in milliseconds.
No Install Required
Works in any modern browser on any device. No downloads, no extensions, no registration — just open and convert.
How It Works
Convert any file in three simple steps
Upload Your File
Drag & drop or click to select any file up to 100MB
Choose Format
Select from 100+ output formats and customize settings
Download Result
Your converted file downloads instantly — processed locally
Ready to Convert Your Files?
Join thousands of users who trust ConvertifyHub for fast, secure file conversion.