How It Works
Convert any file in seconds — images, video, audio, or documents. Three simple steps.
Upload Your Files
Drag and drop any file onto the converter, or click to browse. Hero Converter supports images (JPG, PNG, WebP, HEIC, AVIF, SVG, and more), video (MP4, WebM, MOV, AVI, MKV), audio (MP3, WAV, FLAC, AAC, OGG), and documents (DOCX, PDF). You can batch convert up to 50 files at once.
Choose Output Settings
Select your target format and adjust settings. For images, control quality and resize. For video and audio, choose compression quality. For documents, pick your output format (HTML, TXT, PDF). All options are optional — sensible defaults are applied automatically.
Download Converted Files
Download each converted file individually, or click "Download All" to get a ZIP archive with everything. Your files are ready instantly — no waiting for server processing.
Under the Hood
Privacy by Design
Your files are processed entirely within your browser. Nothing is uploaded to any server — not even temporarily. When you close the tab, everything is gone.
Hardware Accelerated
Image conversion uses native browser APIs. Video and audio conversion is hardware-accelerated for near-native encoding and decoding speeds. HEIC files are decoded via WebAssembly. All engines load on-demand for minimal page weight.
Smart Batch Processing
Files are converted sequentially with real-time progress tracking. Once all files are done, you can download them individually or as a single ZIP archive.