Compress Video for Email
Reduce video size under 25 MB to fit Gmail, Outlook, Yahoo, and Apple Mail attachment limits.
Aggressive compression with 480p resolution to comfortably fit within 25 MB email attachment caps.
Drop video or audio files here or browse your device
Files are processed locally inside browser memory. No uploads.
Frequently Asked Questions
Are my video or audio files ever uploaded?
No. LocalVideoKit processes all media files directly in your web browser using HTML5 File APIs, WebCodecs, and WebAssembly. Your files are never sent to any server or cloud service.
Is there a file size limit?
Because files are processed entirely in your browser's memory, the practical limit is your device's available RAM and your browser tab's memory ceiling. Shorter clips and files under a few hundred megabytes process comfortably on most devices; very large or long files may run slowly or fail on lower-memory devices.
What is the maximum video size for email attachments?
Most email providers (including Gmail, Outlook, Yahoo, and Apple Mail) enforce a 25 MB attachment cap, which effectively leaves ~20 MB of usable space after base64 email encoding. The Email compression preset downscales to 480p and optimizes bitrates to reliably fit within email limits.
How this tool works
Reduce video size for email attachments directly in your browser. Downscale to 480p and optimize bitrate without uploading to any server.