Convert Any File.
Free. Private.
No Upload Required.
Files Stay in Your Browser. We Never See Them.
How File Conversion Works
Client-Side Conversion
Image, data, and document conversions run entirely in your browser using WebAssembly and JavaScript libraries. Your files are processed in memory and never uploaded to any server. This means conversions are instant, work offline, and are completely private.
Server-Side Conversion
Video, audio, ebook, and archive conversions require specialized tools like FFmpeg, LibreOffice, and Calibre. Files are uploaded over an encrypted connection, converted on our server, and automatically deleted. No files are stored after conversion.
Format Intelligence
Each conversion route is optimized for its specific format pair. We handle codec selection, quality presets, metadata preservation, and edge cases so you don't have to. Over 600 conversion routes covering 69 formats across 9 categories.
Find Your Conversion in 5 Seconds
Photos & Graphics
Convert between raster formats like JPG, PNG, and WebP with control over compression and quality. Process HEIC files from iPhones, convert PSD layers to flat images, and transform SVG vectors into raster outputs. All image conversions run client-side in your browser.
Videos & Clips
Re-encode between containers like MP4, MKV, and WebM using FFmpeg with optimized codec presets. Useful for reducing file size with H.264/H.265, converting screen recordings for web playback, or extracting audio tracks from video files.
Music & Sound
Convert between lossy formats (MP3, AAC, OGG) and lossless formats (WAV, FLAC) via FFmpeg. Transcode podcast recordings, extract audio from video, or convert FLAC archives to MP3 for portable devices. Metadata and album art are preserved where possible.
Papers & Files
Convert between PDF, DOCX, HTML, and plain text using LibreOffice headless rendering. Handle office documents with preserved formatting, export spreadsheets to CSV, or transform Markdown into styled HTML. Complex layouts render server-side for accuracy.
Compressed Files
Convert between archive formats using 7-Zip extraction and re-archiving. Extract RAR files to ZIP for broader compatibility, convert TAR.GZ bundles to 7Z for better compression ratios, or repackage archives without losing directory structure or file permissions.
Your Files Stay Yours
Everything happens right here in your browser using cutting-edge web technology. What you convert is yours alone.
Never Uploaded
Your files never leave your device. We process everything locally using WebAssembly.
Privacy-First Analytics
Minimal analytics for site improvements. No third-party trackers or ads networks. Your files never leave your device for client-side conversions.
Open Source
Our conversion engine is open source. Verify our privacy claims yourself.
Guides & Resources
Learn about file formats, conversion techniques, and digital media
PNG vs JPG vs WebP
Which format for which use case? Real comparisons with file sizes and quality.
VideoHow Video Compression Works
Codecs, containers, bitrates — what actually happens when you convert video.
AudioAudio Formats Explained
MP3 vs WAV vs FLAC vs AAC. When lossy is fine and when it's not.
DocumentUnderstanding PDF
Why PDFs break when you convert them and how to get it right.
EbookEbook Formats Guide
EPUB vs MOBI vs PDF. What works on which reader and why.
ArchiveArchive Formats Compared
ZIP vs 7Z vs TAR.GZ. Compression ratios, compatibility, and speed.