Compress Video for Email
Compress video for email locally. Choose a target below your Gmail, Outlook, or work account limit, then check file size and playback before attaching.
or drag & drop here
Paste from clipboard with Cmd+V · Multiple files supported
Supported: MP4 · MOV · WebM
- Never uploaded
- No watermark
- No sign-up
- No server upload limits
How It Works
Simple 3-step compression powered entirely by your local browser
Choose Video File
Select MP4, MOV, WebM video. No upload progress bar—files load instantly from your local disk.
Pick Target MB or Balance
Select 20MB for Discord, 25MB for Gmail, or use the balance slider for optimal quality-to-size ratio.
Hardware Encoding
Encodes directly using your GPU/CPU hardware WebCodecs. Save the Discord-ready MP4 immediately.
Why Choose LessMB
The private, modern alternative to legacy cloud compressor websites
100% In-Browser Privacy
Zero bytes uploaded. Your personal photos, sensitive documents, and private videos never touch external servers or cloud storage.
Zero Queue & Instant Start
No waiting in cloud conversion queues or watching slow upload bars. Processing starts the millisecond you drop your file.
Hardware Acceleration
Harnesses WebAssembly SIMD and WebCodecs GPU encoding for high-fidelity compression directly on modern consumer hardware.
No Credit Consumption
Free tier compression uses your own device compute, meaning zero server credit drain for everyday single and batch tasks.
Current Platform Size Limits
Platform limits can change; check your account before sharing.
| Platform | Limit | Verified |
|---|---|---|
Gmail & Email Personal Gmail | 25MB | 2026-09-29 |
Outlook / Exchange Provider dependent | 20MB | 2026-09-29 |
Email Provider Video Attachment Limits & Safe Target Sizes
Email protocols encode attachments via Base64, creating a ~33% overhead. A 25MB mailbox limit typically accepts raw attachments up to ~18MB. Target a safe size margin below the ceiling.
| Email Provider | Hard Quota | Safe Raw Size | Recommended Format | Recommended Target |
|---|---|---|---|---|
| Gmail / Google Workspace | 25 MB | ~18.5 MB | 720p MP4 @ 30fps | 18 MB |
| Outlook.com / Exchange | 20 MB - 25 MB | ~15.0 MB | 720p MP4 @ 30fps | 15 MB |
| Apple iCloud Mail | 20 MB | ~14.5 MB | 720p / 1080p MP4 | 14 MB |
| Enterprise / Gov SMTP | 10 MB | ~7.2 MB | 720p MP4 @ 24fps | 7 MB |
Tips for Best Results
- Use the recipient or provider’s published attachment limit instead of assuming every mailbox accepts the same size.
- Leave margin below the documented limit because some systems count the whole message, not only the video file.
- If the provider replaces large attachments with cloud links, choose a smaller target only when you specifically need a conventional attachment.
Frequently Asked Questions
Straight answers about this tool and how it works
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