Compress video without losing quality
Shrink MP4, WebM, MOV files for faster sharing — one video or many at a time. Files never leave your browser.
Drop file here
or click to browse files
01Why this compressor
Smaller clips, same look.
Four reasons sales engineers, editors, and teachers keep this page open instead of installing a desktop video tool.
- 01
Typical clips lose 50–80%
Phone footage and screen recordings shrink dramatically thanks to H.264 + the right CRF. Most files come out small enough to share without thinking.
- 02
Three honest quality levels
Low for huge savings, Medium for the everyday best-of-both, High when nothing's allowed to look softer. No dozen sliders to wrestle with.
- 03
FFmpeg, in your browser
WebAssembly runs the same FFmpeg the pros use. No installer, no command line, no upload — just the same engine wrapped in something humans can drive.
- 04
Footage never leaves your laptop
Client recordings, family clips, internal demos — they all process locally. We can't see the video because we never get a copy.
02How it works
Three steps to a lighter video.
- Drop videorecording.mp4212 MB · 3:42
Step 1Drop your video
Drag in MP4, WebM, MOV, MKV, or AVI up to 500 MB. The tool reads duration and starts a preview right away.
- QualityLowMediumHigh
Step 2Pick a quality
Medium is the right answer for most clips — visually identical to the source, often half the size. Low when you need it tiny, High when nothing can shift.
- 68% smallerrecording-compressed.mp4MP4 · 68 MB
Step 3Download the smaller MP4
Hit Compress. The result is a web-friendly MP4 ready for upload, email, or storage. Don't like the size? Re-run on a different level.
03Use cases
When file size blocks the share.
Every compression is really about getting past someone's upload limit. These are the limits people hit most often.
Get under email attachment caps
Most inboxes refuse anything over 25 MB. A typical phone clip compressed to Medium fits comfortably under that.
180 MB → 22 MBFaster uploads to portals
Client portals, learning platforms, and job applications usually have a tight size limit. Compress before uploading and watch the bar fly.
350 MB → 80 MBSend over WhatsApp / Telegram
Messaging apps re-encode aggressively and lose quality. Pre-compress yourself and you control how the video looks on the other side.
Phone clip → 25 MBLighter backups & archives
Cloud storage costs add up. Compressing a year of family videos can free tens of gigabytes with no visible quality difference.
Yearly folder → 60% lighterSocial uploads that pop
Instagram, TikTok, and YouTube all re-encode whatever you upload. Sending a pre-compressed MP4 means you decide the look before they touch it.
Reel → uploaded in secondsDemo videos in a doc
Embedding a short demo into a deck or doc? Compress hard so the file size stays sane and the video plays smoothly inline.
Demo clip → 8 MB embed
04Low vs Medium vs High
What each level costs.
The three levels are honest about the trade. Here is what they do to a typical phone clip.
| Attribute | Low / Medium | High |
|---|---|---|
| Typical savings | Low / MediumLow: 70–85% · Medium: 45–65% | HighHigh: 25–40% |
| Visible quality | Low / MediumLow: clear softening · Medium: imperceptible | HighHigh: identical to source |
| Encoder | Low / MediumH.264 (libx264), preset veryfast | HighSame — only CRF changes |
| CRF value | Low / MediumLow: 32 · Medium: 26 | HighHigh: 22 |
| Best for | Low / MediumEmail, messaging, social | HighHand-offs, archives, sources |
| Time to compress | Low / MediumLow: fastest · Medium: middle | HighHigh: slowest (still under file duration) |
05Quick tips
Squeeze smarter.
Habits that keep file size honest without anyone noticing the difference.
- 01
Start at Medium
It's the sweet spot — big savings, no visible loss. Drop to Low only when a hard limit is forcing your hand.
- 02
Spot-check before sending
Skim faces, text, and fast motion in the result. If anything blurs or blocks, bump up a level and re-run — it's quick.
- 03
Trim first, compress second
If you only need 30 seconds of a 5-minute clip, trim down first. The compressed result will be tiny and far quicker to make.
- 04
Mobile recordings benefit most
Phone footage is encoded conservatively. Re-encoding through Medium often halves the file with no visible difference.
06Loved by
Sales, editing, and teaching rely on it.
Demo recordings used to be 400 MB. I compress to Medium, attach to the proposal email, prospect opens it on the phone. Easy.
Sending review copies to clients without burning bandwidth. Quality on Medium is fine for a thumbs-up, my master stays untouched.
Recording a 40-minute lesson lands at 1.2 GB. Compress to Medium, upload to the school portal in under 5 minutes. Free, no Adobe.
07Questions
Video compression, plainly answered.
The handful of things people check before compressing a long recording. Anything missing? hello@wirelogs.com.
01How much will my video shrink?
Depends on what's already going on inside the file. Phone footage and screen recordings often drop 50–80% on Medium. Already-optimised videos (Instagram exports, etc.) save less because they're closer to their limit.
02Which quality should I pick?
Medium for almost everything. It's CRF 26, which is visually identical to the source for typical content but yields real savings. Drop to Low only when an inbox or portal is forcing your hand, push to High when the recipient will scrutinise quality.
03Will the resolution change?
No. The compressor keeps the original width and height. Savings come entirely from re-encoding more efficiently. If you also want smaller dimensions, resize the video in an editor first.
04What input formats work?
MP4, WebM, MOV, MKV, AVI, M4V — pretty much any video your phone or computer creates. Output is always MP4 with H.264 video and AAC audio, which plays everywhere.
05How big a video can I compress?
Up to 500 MB per file. Longer or larger files should be trimmed first — most use cases fit comfortably under that cap.
06Is it actually free?
Yes. No usage cap, no watermark on the output, no premium plan, no sign-up. Compress as many videos as you want.
07Does my video upload anywhere?
No. FFmpeg runs in your browser via WebAssembly. The video never leaves your machine — client footage, family clips, and recordings stay private.
08How long does compression take?
Roughly half the video's runtime on a modern laptop. A 5-minute clip on Medium finishes in around 2 minutes. Larger files and High quality take longer; Low is fastest.
Ready when you are
Drop a video, save the megabytes.
Drop a file into the tool above, pick a level, save the smaller MP4. The original on your disk stays untouched.
- ~60%typical savings
- 500 MBmax file size
- $0now and always