Make a video smaller, or made for where it's going: email, Discord, WhatsApp, social or YouTube. Never over the limit, no upload, and your video never leaves your device.
Reading your video…
Same picture size
Made for
Ready to compress.
Free, no watermark, no account, no size limit. Big videos are quickest on a computer.
Three steps, with nothing to install and no account to make. It works in your browser, on a computer or a phone.
Drop a file on the page, or pick one from your phone's videos. Videos from phones, cameras and screen recordings all work.
Smaller at the same picture size, made for email, Discord, WhatsApp, social or YouTube, or your own settings. Each says how big it will be, and warns you when the quality will visibly drop.
It's compressed on your device and never goes over the limit. It's saved with the original's name: holiday.mov becomes holiday_ohsovideo.mp4.
To send it by email. Gmail takes 25 MB of attachments, Outlook.com and Yahoo about 20, and many work accounts far less. A minute of phone video or a short screen recording sails past that, so the email bounces or turns into a link. Compressing it first means it simply arrives, and to fit several into one message, compress video for email shares the limit between them.
To get it through a messaging app. Discord's free limit is 20 MB a file, and WhatsApp compresses whatever you send it. Doing it yourself first means you choose what's lost, rather than the app choosing for you. Every platform draws the line somewhere different: we keep the video size limits for Gmail, Discord, WhatsApp and the rest in one place, checked against their own help pages.
To post it. Instagram, TikTok and the rest re-encode everything again, to their own size and bitrate. Handing them a clean file at the right shape means their pass starts from a good copy.
To save room, and time. Smaller files take less space on your phone, your drive and your cloud storage, and they go far quicker on a slow connection. Done well, nobody can tell: our guide to compressing a video without losing quality shows how far a video can shrink before it shows, and how the free compressors compare.
Yes. No account, no trial, no credits and no watermark, and no limit on how many videos you compress.
No. No logo, no watermark, no branding of any kind: what you save is your own video, smaller.
Not here. Your browser reads the video and compresses it itself, on your device, and nothing is uploaded. It's never sent to us or anyone else, which matters when the footage is personal or confidential.
Yes. It checks the finished file, and makes it again with less if it's ever over, so the file you save is never over the size you pick.
The size is a limit, not a goal. When your video looks as good as the original well under it, it stops there rather than filling the space: a short clip for email might come out at 8 MB, not 18. When the video needs every byte, it uses nearly all of them.
Pick yours under the Email option. Gmail takes 25 MB of attachments. Outlook.com and Yahoo may count an email after sending makes it about 37% bigger, so theirs keeps it to 18 MB; the Outlook app takes 14 MB of video, and many work accounts 7 MB. To send several videos in one email, the Compress video for email page fits them in together.
Discord's free limit rose to 20 MB in August 2026, so the Discord option keeps it under 19 MB. Nitro Basic takes 50 MB and Nitro 500 MB: pick yours under the Discord option. If yours still stops at 10 MB, open Advanced and choose File size, 9.5 MB.
WhatsApp compresses the videos you send again, to 480p, or 720p in HD. So the WhatsApp option makes a clean 720p at 30 frames a second, under 15 MB, which its own compression barely changes. For full quality, send the original as a document instead.
Instagram, TikTok, Facebook, X, LinkedIn and Snapchat compress everything again, to 1080p at most (Bluesky 720p). The Social option hands them a sharp 1080p within each one's limits, so their compression starts from a good copy. It keeps your video's shape: nothing is cropped.
YouTube streams bigger, sharper videos better, so the YouTube option keeps your picture's size and a high quality, and only makes the file quicker to send. If your video is already right for YouTube, it says so, and you can send the original.
A small file only has so much room. When the full picture would come out blocky, it uses a smaller one instead. Where it's a close call, it tries both on a few seconds of your video and keeps the sharper. Screen recordings keep their size where they can, so text stays readable.
Start at Medium, or at the size you actually need: some quality goes, the more you squeeze it. At the same picture size, Medium is hard to tell from the original; ten minutes in 19 MB is visibly softer. Each option warns you when to expect visible loss.
Each size only holds so much video. If it can't fit even as a small picture, the option says so: trim the video to a shorter part first, or pick a bigger size.
Yes, under Advanced: MP4, MOV or M4V, a lower frame rate (30 instead of 60 roughly halves a screen recording), a picture size, and whether to keep the sound.
It's done on your device, using its video hardware: a short clip takes seconds, a long 4K video a few minutes. Keep the page open while it works.
Yes. MOV files from iPhones and Macs are supported, HEVC and ProRes included. The compressed copy is an MP4 with H.264 video, which plays everywhere; Advanced can keep it a MOV, or make it an M4V.
MOV, MP4, WebM and MKV from phones, cameras and screen recordings, including iPhone HEVC and ProRes. The result has H.264 video and AAC sound, which plays everywhere.
No. Your video is read a piece at a time and compressed on your device, so it can be any size. Very big or long videos (several GB, or long 4K) take a while and are best done on a computer; keep the page open while it works.
Yes, in an up-to-date browser on iPhone or Android. Keep the page open while it compresses: phones pause pages in the background.
Your video's name with _ohsovideo added, such as holiday_ohsovideo.mp4, so it sits next to the original. The original is never changed.