Compress MP4 to 25 MB
Reduce MP4 videos to under 25 MB for Gmail attachments, Discord Nitro, and most corporate email systems. Fully client-side, no uploads.
Target size
Bitrate-calculated to fit
Privacy-first
Videos never leave your device
Fast processing
WebCodecs + mediabunny
We calculate a target bitrate from your video's duration so the output fits under 25 MB. Longer clips get less bitrate per second, so trimming first gives the best visual quality.
Target Size: Under 25 MB
We calculate a per-video bitrate from duration, then re-encode with H.264 + AAC. If the first encode overshoots, we retry at 10% lower bitrate (up to two retries).
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About Compress MP4 to 25 MB
Gmail caps attachments at 25 MB — anything larger gets converted to a Google Drive link, which many recipients (especially in corporate environments) cannot open. Discord Nitro also sits at 25 MB for its standard tier. This tool compresses MP4 videos to under 25 MB so they send cleanly as real attachments.
25 MB is a roomy target: most 2–3 minute 1080p clips fit with barely any visible quality loss, and a 1-minute clip compressed to 25 MB will look essentially identical to the source on a phone or laptop screen. We calculate a per-video target bitrate so you get the best quality that fits, not a one-size-fits-all preset.
The entire flow runs in your browser. Files never upload to a server, no account is needed, and there is no file-count limit — drop in multiple videos and compress them one after another.
Compress MP4 to 25 MB — Frequently Asked Questions
Will my video look good after compressing to 25 MB?
For clips up to about 3 minutes at 1080p, yes — 25 MB gives enough bitrate (around 1.1 Mbps for a 3-minute clip) that the result is visually close to the source. Above 5 minutes the bitrate drops below the comfortable 1080p threshold and you will see softer motion, though it remains fully watchable.
Is 25 MB enough for Gmail?
Yes. Gmail's hard attachment cap is 25 MB. We target under 25 MB so the email sends as a true attachment rather than switching to a Drive link. Our output includes a small margin so you do not trip the limit due to MIME-encoding overhead.
Does this work for screen recordings?
Very well. Screen recordings are mostly static content with occasional motion, which H.264 compresses extremely efficiently. A 5-minute screen recording at 1080p typically fits 25 MB without visible quality loss.
How long does compression take?
Compression runs at roughly real-time or faster on modern hardware — a 2-minute video takes about 1–2 minutes to compress on a recent laptop. Older devices will be slower. Longer clips at higher source resolutions take the longest.
Will my video look good after compressing to 25 MB?
For clips up to about 3 minutes at 1080p, yes — 25 MB gives enough bitrate (around 1.1 Mbps for a 3-minute clip) that the result is visually close to the source. Above 5 minutes the bitrate drops below the comfortable 1080p threshold and you will see softer motion, though it remains fully watchable.
Is 25 MB enough for Gmail?
Yes. Gmail's hard attachment cap is 25 MB. We target under 25 MB so the email sends as a true attachment rather than switching to a Drive link. Our output includes a small margin so you do not trip the limit due to MIME-encoding overhead.
Does this work for screen recordings?
Very well. Screen recordings are mostly static content with occasional motion, which H.264 compresses extremely efficiently. A 5-minute screen recording at 1080p typically fits 25 MB without visible quality loss.
How long does compression take?
Compression runs at roughly real-time or faster on modern hardware — a 2-minute video takes about 1–2 minutes to compress on a recent laptop. Older devices will be slower. Longer clips at higher source resolutions take the longest.