How to use the Compress Video for Email
- Choose the video.
- Keep the 18 MB target for Gmail and Yahoo, or 14 MB for Outlook and iCloud.
- Use 720p or 480p for longer videos.
- Compress and attach the file.
Why 18 MB and not 25 MB?
Gmail and Yahoo allow 25 MB of attachments, and Outlook.com and iCloud Mail around 20 MB. But attachments are encoded as text when sent, which adds about a third to their size. A 20 MB video takes up roughly 27 MB inside the email, so aiming for 18 MB (or 14 MB for 20 MB providers) keeps you safely under the limit.
Good to know
Compression uses H.264 (x264, "veryfast" preset) with either a quality target (CRF) or a calculated bitrate for target sizes. Audio is re-encoded to AAC. The file is never uploaded, so even private videos can be compressed safely.
Supported files
MP4, MOV, MKV, WEBM, AVI, WMV, FLV, M4V, 3GP, 3G2, MPEG, MPG, TS, MTS, M2TS, VOB, OGV, MXF, ASF, DIVX, F4V, SWF, DV, MOD, TOD, WTV, RM and RMVB video, with H.264, HEVC, VP8, VP9, MPEG-4, MPEG-2, WMV, Theora and other codecs. AV1 videos cannot be read in the browser yet. Files up to 1 GB each.
Frequently asked questions
What if the video is still too big?
Trim it with the Video Trimmer, or share it through a cloud link instead.
Is the Compress Video for Email free?
Yes, completely free, with no sign-up and no watermark. Files up to 1 GB each can be converted, and there is no daily limit.
Do you keep a copy of my files?
We never receive them. All processing happens on your device, so there is nothing for us to store or delete.
Can I use it on my phone?
Yes. Open the page in your phone's browser and choose a file. Phones have less memory than computers, so very large files are better converted on a laptop or desktop.