Vidsize: Video Compressor
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About this app
Vidsize is a free, offline video compressor that lets you reduce video size to the exact figure you need - right on your phone, with nothing uploaded anywhere.
🎯 SET A TARGET SIZE, NOT A GUESS
Most compressors give you three buttons and hope. Vidsize lets you name the number: enter the size and it plans the encode to land under it, re-encoding up to three times if the first pass overshoots.
● 10 MB - older mail limits
● 16 MB - a common ceiling for chat apps such as WhatsApp
● 25 MB - the usual email limit for Gmail, Outlook and Yahoo
● 50 MB - Discord Nitro Basic, forums and larger uploads
● 100 MB - when it just needs to be much smaller
● Or type any size you need, down to 1 MB
⚡ OR JUST PICK A LEVEL
No number in mind? Choose how hard to compress:
● Balanced - smaller file, strong quality
● Smaller - more compression, good quality
● Smallest - maximum practical size reduction
👁️ SEE THE SIZE BEFORE YOU START
Vidsize shows the estimated output size before a single frame is encoded. If a level cannot make the file meaningfully smaller, it says so instead of draining your battery.
💾 FREE UP STORAGE
Videos fill a phone faster than anything else. Compress them instead of deleting them.
📧 COMPRESS VIDEO FOR EMAIL
Too big to attach? Compress video for email at 25 MB and send it through Gmail, Outlook, Yahoo or any mail app that refuses large files.
💬 SIZE IT FOR CHAT AND SOCIAL
Shrink video size to 16 MB for WhatsApp, Telegram or Viber, or 20 MB for Discord's free tier. Make clips small enough for Instagram, Facebook, YouTube or TikTok over a normal connection. Limits change, so check yours and type it in.
📶 SAVE MOBILE DATA
On a limited plan? A smaller file uses less data - and on a weak signal it is the difference between an upload that finishes and one that fails halfway.
🎬 BUILT-IN VIDEO PLAYER
Check the result without leaving the app: watch the compressed video inside Vidsize and go straight back, without handing your file to another app.
📂 FIND ANY VIDEO
Open the gallery grid for camera clips, or browse any folder on your device, including Downloads. Videos saved from the web are as easy to reach as the ones you filmed.
📊 TRACK WHAT YOU SAVED
Every compression is listed with its before and after size, plus the total storage you have reclaimed. Open, share or clear entries any time.
🎥 COMPRESS MP4 AND MORE
As a video size reducer Vidsize reads MP4, MOV, MKV, WebM and other formats your phone can play - camera video, screen recordings and downloaded files alike. Compress MP4 to a smaller size without changing anything else about it. It handles 1080p, 60 fps and 4K wherever your hardware allows, and always writes a standard MP4 that plays everywhere.
🔒 EVERYTHING HAPPENS ON YOUR PHONE
Vidsize compresses locally and offline, using your device's own video hardware. Your videos are never uploaded to a server, there is no account and no sign-up, and the whole app works with no internet connection at all.
❓ COMMON QUESTIONS
Can I compress without losing quality? Honestly, no app can. Every compressor re-encodes the video, and a smaller file always trades away some detail - anyone promising otherwise is not telling the truth. What Vidsize gives you is control over that trade: pick a level or a size, see the estimate first, and judge the result in the built-in player.
Does it delete my original? No. The compressed copy is a separate file; your original stays exactly where it was.
Do I need internet? No. Compression runs entirely on your device.
What format do I get back? A standard MP4, playable on phones, computers and the web.
🆓 FREE: NO SUBSCRIPTION, NO IN-APP PURCHASES
Nothing is locked behind a paywall: no premium tier, no subscription, no in-app purchases. Before each compression you choose: start now with a small Vidsize mark in the corner, or watch one short rewarded ad for a mark-free export. Banner and occasional full-screen ads also appear.
Pick a video, choose a size or a level, and compress.
🎯 SET A TARGET SIZE, NOT A GUESS
Most compressors give you three buttons and hope. Vidsize lets you name the number: enter the size and it plans the encode to land under it, re-encoding up to three times if the first pass overshoots.
● 10 MB - older mail limits
● 16 MB - a common ceiling for chat apps such as WhatsApp
● 25 MB - the usual email limit for Gmail, Outlook and Yahoo
● 50 MB - Discord Nitro Basic, forums and larger uploads
● 100 MB - when it just needs to be much smaller
● Or type any size you need, down to 1 MB
⚡ OR JUST PICK A LEVEL
No number in mind? Choose how hard to compress:
● Balanced - smaller file, strong quality
● Smaller - more compression, good quality
● Smallest - maximum practical size reduction
👁️ SEE THE SIZE BEFORE YOU START
Vidsize shows the estimated output size before a single frame is encoded. If a level cannot make the file meaningfully smaller, it says so instead of draining your battery.
💾 FREE UP STORAGE
Videos fill a phone faster than anything else. Compress them instead of deleting them.
📧 COMPRESS VIDEO FOR EMAIL
Too big to attach? Compress video for email at 25 MB and send it through Gmail, Outlook, Yahoo or any mail app that refuses large files.
💬 SIZE IT FOR CHAT AND SOCIAL
Shrink video size to 16 MB for WhatsApp, Telegram or Viber, or 20 MB for Discord's free tier. Make clips small enough for Instagram, Facebook, YouTube or TikTok over a normal connection. Limits change, so check yours and type it in.
📶 SAVE MOBILE DATA
On a limited plan? A smaller file uses less data - and on a weak signal it is the difference between an upload that finishes and one that fails halfway.
🎬 BUILT-IN VIDEO PLAYER
Check the result without leaving the app: watch the compressed video inside Vidsize and go straight back, without handing your file to another app.
📂 FIND ANY VIDEO
Open the gallery grid for camera clips, or browse any folder on your device, including Downloads. Videos saved from the web are as easy to reach as the ones you filmed.
📊 TRACK WHAT YOU SAVED
Every compression is listed with its before and after size, plus the total storage you have reclaimed. Open, share or clear entries any time.
🎥 COMPRESS MP4 AND MORE
As a video size reducer Vidsize reads MP4, MOV, MKV, WebM and other formats your phone can play - camera video, screen recordings and downloaded files alike. Compress MP4 to a smaller size without changing anything else about it. It handles 1080p, 60 fps and 4K wherever your hardware allows, and always writes a standard MP4 that plays everywhere.
🔒 EVERYTHING HAPPENS ON YOUR PHONE
Vidsize compresses locally and offline, using your device's own video hardware. Your videos are never uploaded to a server, there is no account and no sign-up, and the whole app works with no internet connection at all.
❓ COMMON QUESTIONS
Can I compress without losing quality? Honestly, no app can. Every compressor re-encodes the video, and a smaller file always trades away some detail - anyone promising otherwise is not telling the truth. What Vidsize gives you is control over that trade: pick a level or a size, see the estimate first, and judge the result in the built-in player.
Does it delete my original? No. The compressed copy is a separate file; your original stays exactly where it was.
Do I need internet? No. Compression runs entirely on your device.
What format do I get back? A standard MP4, playable on phones, computers and the web.
🆓 FREE: NO SUBSCRIPTION, NO IN-APP PURCHASES
Nothing is locked behind a paywall: no premium tier, no subscription, no in-app purchases. Before each compression you choose: start now with a small Vidsize mark in the corner, or watch one short rewarded ad for a mark-free export. Banner and occasional full-screen ads also appear.
Pick a video, choose a size or a level, and compress.
Compress video for email: shrink MP4 to any size you need. Free, offline.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
What's new in 0.9.17
• Target size — enter a size like 25 MB and Vidsize plans the encode to land under it
• Built-in player — watch the result without leaving the app
• New video picker: gallery grid plus any folder, including Downloads
• Size estimates are much closer to the real output
• More reliable with large and 4K videos
• Clearer messages when a video can't be processed
• Rate Vidsize from the result screen or Settings
• Target size — enter a size like 25 MB and Vidsize plans the encode to land under it
• Built-in player — watch the result without leaving the app
• New video picker: gallery grid plus any folder, including Downloads
• Size estimates are much closer to the real output
• More reliable with large and 4K videos
• Clearer messages when a video can't be processed
• Rate Vidsize from the result screen or Settings
