Convert Any File, 100% Privately
Professional file conversion for 100+ formats. Images, documents, audio, video, and spreadsheets are processed locally inside your browser. No server uploads, no wait queues, and no email required.
Popular Conversions
Instant File Converter
Drag and drop images, documents, audio, or video files up to 100MB. Processed locally in seconds.
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 & drop images, documents, audio, or video 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
Explore 24+ Free Conversion Tools
Fast, secure utilities for designers, developers, students, and businesses.
Image Converter
Convert between 25+ image formats including WebP, AVIF, HEIC, PNG, JPEG, and GIF without quality loss.
Image Compressor
Intelligently shrink image file sizes by up to 80% while preserving crisp visual fidelity.
Image Resizer
Resize, crop, and scale images to exact pixel dimensions or aspect ratios for web and social media.
Favicon Generator
Generate multi-size favicons (16x16, 32x32, 192x192, Apple Touch) ready for websites and web apps.
SVG Optimizer
Clean up and minify SVG vector files by stripping redundant metadata, editor tags, and unused paths.
Image Watermark
Stamp customized text or watermark logos onto your photos with adjustable opacity and position.
Website Image Extractor
Extract and download all high-resolution images, SVG vectors, and backgrounds from any URL.
Document Converter
Convert PDF, Word DOCX, TXT, RTF, and ODT files with complete layout and font fidelity.
Markdown Converter
Convert Markdown syntax to formatted HTML, PDF, or Word documents in real time.
XML Converter
Parse and convert XML data structures into JSON, CSV, and YAML format effortlessly.
JSON to TOON
Compress and structure JSON into TOON for 30-60% token reduction in LLM applications.
Audio Converter
Convert 20+ audio formats including MP3, WAV, FLAC, AAC, OGG, and M4A with studio bitrate control.
Video Converter
Transcode video files between MP4, WebM, AVI, MOV, and MKV with browser WebAssembly acceleration.
Video Trimmer
Cut and trim video segments with millisecond precision, preview playback, and instant export.
Spreadsheet Converter
Convert Excel spreadsheets (.xlsx, .xls) to clean CSV, TSV, or ODS formats for data pipelines.
Archive Converter
Inspect, unpack, and convert archive containers including ZIP, RAR, 7Z, TAR, and GZ.
Unit Converter
Convert 50+ units across length, mass, temperature, area, volume, and data storage metrics.
Code Minifier
Minify JavaScript, CSS, and HTML payloads to accelerate page speed and cut bandwidth costs.
Code Beautifier
Format, unminify, and cleanly indent messy JavaScript, TypeScript, CSS, and HTML code.
QR & Barcode Generator
Generate scannable QR codes and commercial barcodes (EAN, UPC, Code128) in SVG or PNG.
Color Palette Converter
Translate colors seamlessly between HEX, RGB, HSL, and CMYK with live preview swatches.
Digital Base & Encodings
Encode and decode Base64, Hexadecimal, Binary, ASCII, and compute cryptographic hashes.
Security Tools Hub
Validate JWT tokens, inspect JSON diffs, generate AES keys, and run privacy checks.
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.
Why Browser-Based Conversion is the Safest Choice
Traditional cloud converters upload your personal photos, tax records, and private documents to third-party servers. ConvertifyHub takes an entirely different approach.
What is the best free file converter that never uploads your files?
ConvertifyHub is a free online file converter that supports 100+ formats across images, documents, audio, video, archives, and spreadsheets. Unlike cloud converters that stream your files to remote servers, ConvertifyHub runs entirely in your browser using modern client-side JavaScript, WebAssembly (Wasm), and Canvas APIs.
Your photos, contracts, confidential financial sheets, and personal media never leave your device. There is no account registration, no file storage on remote disks, and zero risk of cloud server breaches. Read our full explanation in our Private Browser Converter Guide.
ConvertifyHub vs Traditional Cloud Converters
| Feature | ConvertifyHub | CloudConvert / Zamzar / Convertio |
|---|---|---|
| Server File Upload | Never (Local Browser) | Yes (Uploaded to Cloud) |
| Data Privacy | 100% Private (Zero Storage) | Stored on 3rd-Party Disks |
| Queue / Waiting Times | Instant Local Processing | Subject to Server Queues |
| Daily Conversion Caps | Unlimited Free | Strict Daily Minute / File Limits |
| Account or Credit Card | None Required | Paywalls on High Usage |
How to convert any file online in 3 simple steps
- Select or Drag & Drop: Choose any image, document, audio, or video file from your computer or mobile device.
- Choose Your Target Format: Select from supported formats like JPG, PNG, WebP, AVIF, PDF, Word DOCX, MP3, MP4, or CSV.
- Instant Download: The file is converted directly inside your browser memory and saved to your device immediately.
Frequently Asked Questions
Is it really safe to convert confidential or personal documents?
Yes. Because ConvertifyHub processes files client-side, your documents are never uploaded across the Internet to our servers or any cloud database. Whether you are converting bank statements, confidential medical records, or family photos, your data remains completely confined to your device.
How do I convert iPhone HEIC photos to JPG or PNG?
Use our dedicated HEIC to JPG converter or HEIC to PNG converter. Simply drop your Apple photos, and ConvertifyHub will unpack the HEIC container and output high-quality JPGs with full color accuracy.
What is the maximum file size supported?
ConvertifyHub supports files up to 100MB per file. Because files are converted in your browser memory, this ensures maximum performance and prevents browser tab crashes while covering 99% of images, documents, audio tracks, and short video clips.
Does ConvertifyHub work on mobile devices?
Yes. ConvertifyHub is fully responsive and compatible with Safari on iOS/iPadOS, Chrome on Android, and all modern desktop browsers including Firefox, Edge, and Brave.