Runs in
FFmpeg WebAssembly
Your video stays in this tab and is never uploaded. The FFmpeg engine loads from cdn.jsdelivr.net on the first video run and runs only if it matches the copy this site was built with. The encode runs inside a Worker.
Your data stays in this tabEngine from cdn.jsdelivr.netGives you MP4
Video Resizer is ready for input.
Your video stays in this tab and is never uploaded. The FFmpeg engine loads from cdn.jsdelivr.net on the first video run and runs only if it matches the copy this site was built with. The encode runs inside a Worker.FFmpeg WebAssembly
Free now1 min · 1 max0 selected · 0 BMP4
Step 1
Add your files
Paste from clipboard
Selected files
No files selected yet.
Add files to populate the queue. After that you can tune controls, run the job, and download outputs from the same panel.
Step 2
Set controls
Step 3
Run tool
Waiting for files and settings.
0%
Pick files and run the tool.
Notes
The first video task takes longer because the FFmpeg engine loads into the tab from cdn.jsdelivr.net and is checked against the copy this site was built with. That request carries none of your video.
Contain adds padding when needed. Cover fills the frame by cropping the edges.
Workspace controls
Save a full workspace when you want the tool state, files, and team note preserved together.
Versions and sharing
Output versions appear here after successful runs so users can compare before exporting again.
Run detailsRunnable
What this tool does
Limit
Results depend on source quality and selected settings. The tool reports failures instead of silently claiming completion.
Input
1 file minimum and 1 file maximum. Choose a preset frame and decide whether the clip should fit inside it or fill it edge to edge.
The Run button stays disabled until the required input is ready.
Output
MP4. Output names, file sizes, result notes, and downloads stay in the same workspace.
Results stay with the settings and source files used for the run.
If it fails
The workspace preserves staged settings, queue state, run progress, errors, retry, result versions, presets, and export bundles.
The console keeps the error and lets you retry the same setup.
Input readiness checkVisible run progressExplicit success or error stateDownload and rerun path
Inputs and features
Clip upload
ReadyDesktop and mobile clip intake.
Camera capture
ReadyMobile-first capture for quick edit jobs.
Clipboard paste
ReadyPaste short media references where supported.
Import package
ReadyReplay saved timeline or trim setups.
Share setup
ReadyShare crop, size, and subtitle recipes.
Export package
ReadyPortable job manifest and output versions.
Saved workspacesPresetsRecent jobsRerun historyBatch queueProgress and ETACancel and retryMobile camera inputClipboard intakeCloud import and export
Language and help
6h first response
Related tools
Support notes
Use it forReels, shorts, and marketplace clips with a fixed frame.
Good to knowNo timeline, no project file. Pick the size and export.
- Resize
- Social presets
- Vertical
- Landscape
Where your data goesYour files stay in this tab. The tool fetches the FFmpeg video engine, run only if it matches the copy this site was built with from cdn.jsdelivr.net. None of your file goes with those requests. Part of the work runs inside a Worker. No page can watch what a Worker fetches, so the Receipt names this rather than counting it.