Resize Video for Instagram Instantly in Your Browser
Change your video size for Instagram Reels, feed posts, or stories right in your browser. There is absolutely no waiting for uploads and no app to install because your files stay safe on your computer.
Over 1 million creators use Flixier every day including brands like:
Make Your Video the Perfect Size for Instagram Reels
Fit Any Layout
Use our free online video resizer to resize your clips for Instagram or any other platform. Because your files stay on your computer, you never have to wait for slow internet uploads. Simply load your clip and change it to a square or vertical ratio instantly.
Change Video Size
Resize for TikTok or Reels with just one click. You can turn any horizontal video into a vertical clip without cutting out the most important parts of your shot. There are zero file size limits, so you can resize large files right away without paying anything.
Add Automated Captions
Make your social media clips stand out by adding captions to your work. Once your clip is the right shape, you can open it in Flixier to add animated text, pick fonts, and change colors. It helps your viewers enjoy your posts even when they’re watching on mute.
Continue Editing in Flixier
Trim your files before you post to keep people watching. You can edit your video for Instagram further by deleting mistakes or creating quick loops with an Instagram GIF maker. Everything happens right in your browser.
How to resize video for Instagram:
Who this is for
Marketers
Change your widescreen product videos into clean square or vertical ads. Keep your products looking sharp on phone screens to get more clicks without expensive editing tools.
See How It WorksEducators
Podcasters
Social Creators
Still have questions?
We got you!
How do I resize a video for Instagram?
Simply open our free tool in your browser and choose your file. Pick the preset size you want, like square or vertical, and change the layout instantly. Your file stays on your computer the whole time, so there is zero waiting for uploads.
What size is an Instagram reel vs a post vs a story?
Reels and stories look best in a vertical format, which is a 9:16 shape. Regular feed posts look great as a square 1:1 shape or a vertical 4:5 shape. Our tool lets you switch between all of these shapes with a single click.
Can I turn a landscape video into a reel without cropping?
Yes. You can change your wide video to a vertical shape without losing the best parts. You can zoom in, adjust the position, or leave clean borders on the top and bottom so everything stays perfectly in frame.
Do I need to upload my video or install an app?
No. You do not need to install any apps or wait for slow uploads. Flixier runs entirely on your computer, inside your web browser. Your videos never leave your machine unless you choose to use our full editor later.
Can I edit my video before posting to Instagram?
Yes. After you change the size, you can click to edit in Flixier. This lets you trim out mistakes, combine multiple clips together, generate subtitles, and add music or sound effects before you share your final final video.
