Video · free & private
Convert, compress and edit video online
Convert between MP4, MOV, WEBM and GIF, shrink huge clips, trim and crop footage, and add automatic captions — privately in your browser.
Video
Convert
2 tools
Convert any video to MP4, WEBM, MOV, AVI, MKV or GIF, or pull the audio out as MP3, WAV or AAC. Powered by WebAssembly FFmpeg running entirely on your device: no uploads, no queues, no file-size tricks.
Create animated GIFs from video clips or image sequences, and convert GIFs to modern video formats. All processing is local. Your media never leaves your device.
Video
Compress
2 tools
Video
Edit
20 tools
Cut video files to a start/end time online for free. Runs in your browser via WebAssembly. No upload.
Crop the visible area of a video online for free. Private by design. Processed locally with WebAssembly.
Combine two or more video clips into one file online for free. Runs entirely in your browser with FFmpeg WebAssembly. No upload.
Cut a video into multiple clips at chosen timestamps and download them as a ZIP. Free, private and 100% client-side.
Rotate a video by 90, 180 or 270 degrees online for free. Private by design. Processed locally with WebAssembly.
Resize video to 720p, 1080p, square, portrait or exact custom dimensions. Letterboxes to keep aspect ratio. Free and private.
Remove the audio track from a video without changing the picture. Free, private and 100% client-side.
Replace a video's soundtrack with a music or voice file. Upload the video first, then the audio. Free and private in your browser.
Mirror a video horizontally or flip it vertically online for free. Private by design. Processed locally with WebAssembly.
Save video frames as JPG or PNG images at a chosen interval, bundled as a ZIP. Free, private and fully offline in your browser.
Speed up or slow down a video from 0.25x to 4x with matching audio tempo when possible. Free and private in your browser.
Repeat a short video clip a selected number of times (2 to 20). Free, private and 100% client-side.
Place a text or logo watermark on a video with position and opacity controls. Free and private: processing stays on your device.
Play a video backwards, with optional reversed audio. Free and private in your browser. Prefer short clips to avoid memory limits.
Make an animated GIF play backwards online for free. Palette is rebuilt for clean results. Fully private in your browser.
Speed up or slow down an animated GIF from 0.25x to 4x online for free. Private and fully client-side.
Record your screen or a browser tab and download a WebM video. Nothing is uploaded. Works in modern browsers with screen-share permission.
Record your camera and microphone, preview the take and download a WebM file. Fully private: nothing leaves your device.
Generate captions for any video with AI, automatically. Produces SRT/VTT subtitle files and can burn captions into the video, all locally in your browser.
Combine images into an animated GIF online for free. Set frame rate and size. Everything runs in your browser.
Products
Apps
How it works
- 01Drop your video
Add a clip to any tool below — as large as your device can handle.
- 02Pick the job
Convert to another format, compress to a smaller size, or trim, crop and caption the footage.
- 03Download the result
FFmpeg runs on your device via WebAssembly. The finished video downloads straight from your browser.
Why video tools on AZ Tooling?
Video files are the heaviest things most people ever put on the internet — which is exactly why they shouldn't be uploaded just to trim or reformat them. AZ Tooling runs a full WebAssembly build of FFmpeg on your device, so conversion, compression and cutting happen locally, even for large clips.
Convert between MP4, MOV, WEBM, MKV and GIF, compress videos for sharing, trim and crop footage, burn in automatic captions or turn a clip into a GIF. Free, unlimited and private by construction.
Frequently asked questions
How can video conversion work without uploading?
A WebAssembly build of FFmpeg — the same engine professional tools use — runs inside your browser. Your video is processed on your own device and never sent to a server.
How much smaller can my video get?
Most clips compress by 50–90%, especially footage straight from a camera, which is encoded for editing rather than sharing. You choose the quality target with a slider.
Which video formats can I convert between?
MP4, MOV, WEBM, AVI, MKV and more, plus GIF in both directions. Audio extraction (video to MP3 and friends) is included too.
Is there a video length limit?
There's no artificial limit — the ceiling is your device's memory. Most phones and laptops comfortably handle clips of several hundred megabytes.
Explore more
Video, audio, images, documents, fonts, CAD and more — 380+ conversion pairs, all processed privately on your own device.
Shrink videos, images, audio and PDFs by up to 90% with smart quality controls — privately, right in your browser.
Remove backgrounds, enhance photos, cut video and audio, and let on-device AI do the heavy lifting — no uploads, ever.
Merge, split, sign, protect, convert and organize PDFs — a complete PDF suite that never sees your documents.
Dedicated workspaces for PDF, images, video and audio, all designed to run on your device.
Convert, compress, resize, crop and enhance images — plus one-click AI background removal — all processed privately on your own device.
Convert between MP3, WAV, FLAC and more, compress recordings, trim clips and transcribe voice to text — all on your own device.
Convert PDFs, Word files, spreadsheets and ebooks, then merge, split, sign, protect and compress — without your documents ever leaving your device.