Slimvid

Preset · 16 MB · chat and Moments

Compress Video for WeChat

Land around 16MB so the clip sends in chat instead of becoming a compressed blob.

Drop videos here, or click to browse

Up to 1GB each · MP4, MOV, WebM, MKV, AVI, WMV and 30+ more

Choose files

Processed locally in your browser. Nothing is uploaded.

Settings

Add a video and the settings for this tool appear here.

How it works

  1. 1Drop the clip you want to send in WeChat.
  2. 2Keep the 16MB target. Trim a shorter range if the quality estimate looks tight.
  3. 3Compress, download, then send the MP4 from Files or your camera roll.

Processed locally in your browser. Nothing is uploaded.

Processed locally in your browser. Files never leave your device. Up to 1GB — larger files go to the desktop app.

Why ~16MB before you send

WeChat recompresses large videos when you pick them from the album. A 200MB phone clip often arrives muddy, with unreadable text.

Around 16MB as H.264 MP4 usually goes through as a file in chat and Moments, so faces, slides and captions stay readable.

Original-quality send still has a practical cap on many accounts. Hitting 16MB first is the size that actually arrives.

WeChat practical limits

This preset
About 16MB
Chat / Moments
WeChat recompresses large album picks
Original send
Varies by account; 16MB is the safe default

Three steps

How to compress a video for WeChat

No sign-up, no upload queue, no watermark. Everything happens on your device.

  1. 1

    Drop your file

    Drop the clip you want to send in WeChat.

  2. 2

    Choose settings

    Keep the 16MB target. Trim a shorter range if the quality estimate looks tight.

  3. 3

    Download

    Compress, download, then send the MP4 from Files or your camera roll.

Same job, other limits

Related size and platform pages

Compress Video for WhatsAppMake a chat-sized H.264 MP4 so WhatsApp does not smash the picture on send.For WhatsAppCompress Video for DiscordHit the 10MB free-upload cap without guessing a bitrate. Hardware encoding, nothing uploaded.For DiscordCompress Video for DouyinTurn a bulky edit into a 50MB file that uploads on cellular without looking mushy.For DouyinCompress Video for XiaohongshuCut a heavy export down to a 100MB upload that posts on cellular without looking mushy.For Xiaohongshu

Keep going

Related tools

FAQ

WeChat video size FAQ

Desktop app

Files over 1GB? Take it to the desktop.

The browser version is perfect for everyday clips. When you need to crunch big footage or dozens of files, the desktop app does it faster on your own hardware.

Get early accessCompare web vs desktop
  • No file size limit — 4K, hour-long recordings, anything
  • Batch queues: drop a folder, apply one preset
  • Hardware-accelerated encoding (H.264 / H.265)
  • Works fully offline, same privacy guarantee