MP4 tools
Every free tool that works with MP4 files: convert, compress, edit and more, all in one place.
30 tools for MP4 files
All free, all private. Open any tool to get started.
Video QR Code Generator
Turn a hosted or streamed video link into a branded, scannable QR code so anyone can scan to watch. Add your colors and logo, run a live scan check, and export print-ready PNG, SVG or PDF. 100% in your browser. The link is never uploaded and your video isn't hosted here.
Video → Work
Turn client Looms, screen recordings and voice notes into developer-ready tasks, bugs, design changes, screenshots and acceptance criteria: each traceable to the moment it was asked for.
Video Intelligence
Transcribe video and audio in your browser, then edit, search, label speakers and export. Speech recognition runs on your device. Nothing is uploaded.
Video Compressor
Compress video in your browser with FFmpeg, shrink MP4, MOV, WebM and MKV files with a simple quality slider, see the exact bytes and percentage saved next to a live preview, then download. Nothing is uploaded.
Video Trimmer
Cut and trim video online in your browser, drag a visual timeline to set exact start and end points, preview the selection, and download the clip. No uploads, no account, no watermark.
Video Merger
Combine multiple videos into one online. Add your clips, drag to reorder, and merge into a single MP4. Handles mismatched sizes and formats by re-encoding to a common baseline. No uploads, no account, no watermark.
Video Splitter
Split a video into multiple clips online, cut into equal chunks every N seconds or by your own custom ranges, then download each part or grab them all in one ZIP. No uploads, no account, no watermark.
Video Cropper
Crop video online in your browser, drag a box over a live preview or pick an aspect preset (1:1, 9:16, 4:5, 16:9) to reframe the picture, then download the cropped clip. No uploads, no account, no watermark.
Video Rotate
Rotate a video online in your browser, turn a sideways or upside-down clip 90°, 180° or 270°, preview the fix, and download it baked in. No uploads, no account, no watermark.
Video Speed Changer
Speed up or slow down a video online in your browser: pick anything from 0.25× slow motion to a 4× fast-forward, keep the audio pitch natural or let it rise, then download. No uploads, no account, no watermark.
Video Loop
Loop a video online, repeat any clip 2, 5, 10 or more times back-to-back into one longer file, then download it. No uploads, no account, no watermark.
Reverse Video
Reverse a video online in your browser, play the footage and its audio backwards, preview the result, and download it. MP4, MOV, WebM and MKV, no uploads, no account, no watermark.
Mute Video
Mute a video online in your browser, remove the audio track, preview the silent result, and download it. MP4, MOV, WebM and MKV, no uploads, no account, no watermark, and the picture stays untouched.
Video Resizer
Resize video resolution in your browser with FFmpeg: scale MP4, MOV, WebM and MKV to 1080p, 720p, 480p or a custom width and height, lock the aspect ratio or fit-and-pad, then download. Nothing is uploaded.
Add Watermark to Video
Add a text or logo watermark to a video online, in your browser, position it in any corner or the centre, set the opacity, and download the branded clip. No uploads, no account, no second watermark of ours.
Extract Audio from Video
Pull the audio track out of any video and save it as MP3, WAV, AAC, M4A or OGG, right in your browser. Drop an MP4, MOV or WEBM, pick a format, preview and download. Nothing is uploaded.
Video to GIF
Turn a video into a high-quality animated GIF right in your browser. Pick a start, duration, frame rate and width, get a two-pass palette for clean color, then preview and download. Nothing is uploaded.
GIF to Video
Convert an animated GIF into a smaller, smoother MP4 or WebM right in your browser. Modern video compression typically shrinks a GIF to a fraction of its size and plays back cleaner, and nothing is ever uploaded.
Video Thumbnail Generator
Grab a still frame from any video at the exact second you choose and save it as a PNG or JPG. Scrub, capture, download, instant, no upload, and no FFmpeg engine to wait on.
Video Frame Extractor
Extract still frames from any video: sample evenly at a chosen frame rate or grab exact timestamps, then download the images or a ZIP. Runs instantly in your browser with no upload and no engine to load.
Video Metadata Viewer
Inspect any video in your browser, see exact duration, resolution, aspect ratio, file size and format the instant you drop it, with an optional deep probe for codec, bitrate and frame rate. Nothing is uploaded.
Video Player
A clean, private video player that runs in your browser, play any local MP4, WebM, MOV or MKV with variable speed, A→B loop, Picture-in-Picture, fullscreen and frame-by-frame stepping. Nothing is uploaded, nothing is processed.
MP4 to WebM
Convert MP4 to WebM (VP9) in your browser: a leaner, royalty-free format that streams natively in modern browsers. Tune the quality, preview the result and download. Nothing is uploaded.
WebM to MP4
Convert WebM to MP4 (H.264) in your browser, the universally compatible format that plays on iPhones, in editors and on social. Preview the result and download. Nothing is uploaded.
MOV to MP4
Convert MOV (QuickTime) to MP4 in your browser, a universally compatible H.264/AAC file that plays and uploads everywhere. Real FFmpeg transcoding, in-page preview, one-click download. Nothing is uploaded.
AVI to MP4
Convert AVI to MP4 (H.264/AAC) in your browser: the universal format that plays on phones, browsers, social and editors. Real transcoding with web-ready faststart, preview and download. Nothing is uploaded.
MKV to MP4
Convert MKV to MP4 in your browser, usually a fast, lossless remux that just swaps the container so your video plays on phones, TVs, editors and the web. Nothing is uploaded.
Subtitle Converter
Convert subtitles between SRT and WebVTT and shift the timing to fix out-of-sync captions: instantly, in your browser. Nothing uploaded, no sign-up.
GigAI Fit
Tell GigAI the maximum size you need and it works out how to get there, images, PDFs, video and audio, all compressed in your browser.
GigAI Verify
Inspect the signals behind a file (provenance, metadata, structure and compression) and see the evidence rather than a yes/no verdict.
Browse by file type
- SVG toolsConvert, compress and edit SVG files.64 tools
- PNG toolsConvert, compress and edit PNG files.54 tools
- PDF toolsConvert, compress and edit PDF files.46 tools
- MP3 toolsConvert, compress and edit MP3 files.28 tools
- JSON toolsConvert, compress and edit JSON files.25 tools
- WAV toolsConvert, compress and edit WAV files.21 tools
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From the blog
- How to Merge Video Clips Into One File (Without Re-Encoding When You Can)
- MP4 vs WebM: Which Video Format Should You Use?
- How to Convert a Video to GIF, Settings That Keep It Small and Sharp
- How to Convert MOV to MP4 (From iPhone or QuickTime, Without Quality Loss)
- How to Scan a QR Code on Any Device: iPhone, Android, Desktop, and Safely
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Start with Video QR Code Generator
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