Crop the visual area of your MP4 or WebM video directly in the browser with 9:16, 1:1, 16:9 presets or custom dimensions with X/Y offsets. Free to start with no signup.
Runs on FFmpeg
Content reviewed October 2026 · About Toolzum
Extracts the audio track from uploaded video files (MP4, MOV, AVI, WebM) and encodes it as a high-quality MP3 file. Free to start with no signup.
Reduces MP4, MOV, and WebM video file sizes with a configurable CRF 20–40 slider (default 28, libx264 fast preset), plus a GIF mode with color-palette control. Videos never leave your device — compression runs locally in your browser with FFmpeg WASM.
Convert MP4/WebM to GIF animations. Videos up to 250MB. Videos never leave your device — compression and conversion run locally in your browser with FFmpeg WASM.
Resize one animated GIF to exact dimensions via FFmpeg Lanczos (default), Bilinear, or Nearest — width presets 100/150/200/320/480/640px or custom, height auto-follows with aspect lock ON (unlock to stretch). W/H prefill from the source; saves as <name>-resized.gif with animation intact.
Crop photos with 6 aspect presets — Free Size, Square 1:1, Video 16:9, Photo 4:3, Classic 3:2, Portrait 2:3 — plus ±90° rotation and horizontal/vertical flip. Exports PNG as cropped-<name> — local Cropper.js work, unlimited saves.
MP4 and WebM files. The tool scales the source to cover your target frame, then crops with FFmpeg (libx264, CRF 23, yuv420p with faststart for browser playback).
Yes. Choose 9:16 Reel/Shorts (1080x1920), 1:1 Square (1080x1080), 16:9 YouTube (1920x1080), or Custom numeric width/height with X/Y offsets. A dashed overlay previews the approximate framing.
Cropping always re-encodes (libx264 at CRF 23), so expect a normal conversion pass with a small quality cost. Keep the master archived; distribute the cropped copy.
There's no strict limit, but longer videos (30+ minutes) may take several minutes to process depending on your device.
Yes. After processing completes, the cropped video is downloaded to your device. No server storage involved.
Video Trimmer
Cut start/end segments from any video with fast stream-copy trimming in your browser (keyframe-aligned, no re-encode). Remove a 45-second cold open from a 10-minute upload — local FFmpeg work, unlimited saves.
Video Filters
Grade videos with 18 filters across Color, Artistic, Blur, and Lighting (grayscale, sepia, pixelate, gaussian blur, vignette, brightness/contrast/saturation) plus a live still-frame preview. Export MP4, WebM, or GIF — local FFmpeg work, unlimited saves.
Video Compressor
Reduces MP4, MOV, and WebM video file sizes with a configurable CRF 20–40 slider (default 28, libx264 fast preset), plus a GIF mode with color-palette control. Videos never leave your device — compression runs locally in your browser with FFmpeg WASM.