Compress Video to 25 MB
The most common upload limit on the web, hit in one pass on your device.
The compressor opens with the target set to 25 MB — the attachment limit of Gmail and Outlook and the default file limit of many web forms, ticketing systems and CMS uploaders. Type another number for a different limit.
Open the compressor → Opens the compressor with the target preset to 25 MB.- 100% freeNo account, no daily quota, no paid tier.
- Nothing is uploadedFiles are processed on your device and never reach a server.
- No catch on the outputNo watermark, no forced downscaling, no size cap.
- Updated in the openEvery fix and every new tool is written down on the changelog page.
Why 25 MB shows up everywhere
Twenty-five megabytes is Gmail's and Outlook.com's attachment limit, the default upload maximum in a great many web applications, and the ceiling on most support ticket and job application forms. It has been the number since the mid-2000s, when it was generous; today a single minute of phone video exceeds it. So "compress video to 25 MB" is usually the last step before sending a recording to a company, a school, a client or a support desk, and the question is how much length and quality fits.
Quite a lot, as it turns out. At 720p, which is all a laptop window or an email preview shows, 25 MB carries about two and a half minutes at a clean 1.2 Mbps. At 1080p it is about 75 seconds. At 480p, well over six minutes. The compressor picks the highest resolution whose minimum clean bitrate fits the clip's length, and shows its choice in the estimate line before you start; if you would rather keep 1080p, Trim Video ↗ shortens the clip without re-encoding.
Attachments versus form uploads
If the file is going as an email attachment, remember that mail encodes attachments in Base64, which inflates them by about a third. Gmail measures the encoded message, so a 24 MB file fails while an 18 MB one goes through. Type 18 into the size box for email; keep 25 for web forms, which measure the raw file. Web forms also often check the file type: MP4 with H.264, the default here, passes every filter that accepts video at all. WebM (VP9 or AV1, in Advanced) is smaller for the same quality but some uploaders do not list it as an allowed type.
Everything runs on your own device. Nothing is uploaded to this site, there is no queue and no limit on the size of the original — a gigabyte-scale recording from a camera or a screen-capture session is read in place and streamed back to disk. Your device's hardware encoder does the work, so it is fast, and the file you are about to send to a company never passes through another one on the way.
Making 25 MB look good
Screen recordings, presentations and interviews compress extremely well because most of the frame does not change; 25 MB can hold ten minutes of a slide deck with narration at 720p. Handheld and sports footage is the opposite. For those, cap the frame rate at 30 in Advanced (most cameras record 60), and consider H.265/HEVC if you know the recipient is on a phone, Mac or a recent Windows machine — it gives about a third more length at the same quality. Keep the audio as it is unless the file is mostly talking, in which case Small quality with 128 kbps audio spends the budget where it matters.
Frequently asked questions
Which limit should I type for Gmail?
18. Gmail's 25 MB applies to the encoded message, and Base64 encoding adds about 33% to an attachment.
The form accepts 25 MB but my 24.8 MB file was refused.
Some uploaders use 25 × 1000 × 1000 bytes rather than 25 × 1024 × 1024. Type 23 to be safe.
How long a video fits in 25 MB?
About 75 seconds at 1080p, 2.5 minutes at 720p, 6+ minutes at 480p for typical footage; two to three times longer for screen recordings.
Does compressing twice lose more quality?
Each run here starts from your original file, not from a previous output, so trying different targets does not accumulate loss.