Video Compression, Captions & Conversion
Video files from modern cameras and phones are often too large to attach to emails, share on Discord without Nitro, or upload to messaging apps. ConverterForAll lets you compress video files, generate timed AI subtitles, and convert formats directly on your device.
AI Caption Studio
Automatically transcribe and generate styled video captions right in your browser using local AI.
Video Compressor
Compress MP4, MOV, MKV, WebM, and AVI videos in your browser. Outputs lightweight, universally compatible MP4 files without server uploads.
Compress MP4 Video Online
Reduce MP4 file size online without losing quality. 100% client-side compression on your device with no uploads required.
Compress MOV Video Online
Compress Apple QuickTime MOV videos into lightweight, web-optimized MP4 files without quality loss.
Compress Video for Discord (<25MB)
Compress video files to fit under Discord's 25MB free upload limit automatically without ruining video quality.
Compress Video for WhatsApp (<16MB)
Shrink long or HD videos under WhatsApp's 16MB limit for instant sharing without compression stutter.
Compress Video for Email Attachment
Easily compress large videos to fit inside Gmail and Outlook 25MB email attachment limits.
Compress Video for Instagram & Reels
Compress videos for Instagram Stories, Reels, and Feed without the blur or pixelation caused by Instagram's auto-compression.
Compress Video for Facebook
Optimize video bitrates for fast Facebook uploads while maintaining crisp 1080p clarity.
Compress Video for Phone (Android & iPhone)
Compress videos directly on your Android or iPhone browser to free up gigabytes of phone storage.
Video to GIF Converter
Convert video clips and movies to lightweight animated GIFs.
Video to JPG Sequence
Extract frames from your video into a sequence of JPG images.
MP4 to MP3
Extract high-quality audio from your MP4 videos.
to MP4
Convert any video format to standard MP4 format.
to AVI
Convert any video format to AVI format.
to MKV
Convert any video format to MKV format.
Online Screen Recorder
Record your desktop, application window, or browser tab with audio for free. 100% private and in-browser.
to WMV
Convert any video format to WMV format.
to MOV
Convert any video format to Apple MOV format.
to FLV
Convert any video format to FLV format.
Why use ConverterForAll for video compression, captions & conversion?
Preset size targets for Discord (under 25MB or 10MB), WhatsApp (under 16MB), and email attachments (under 25MB).
Generate accurate, timed subtitle text and burned-in captions for Hindi, English, and multilingual videos in your browser.
Extract clean MP3 audio from MP4 videos or convert formats to AVI, MOV, WebM, and MKV without watermarks.
Most of our tools run directly inside your browser so your documents stay on your device. For complex conversions that need temporary cloud processing, files are handled in temporary memory without permanent server storage.
Frequently Asked Questions
How does video compression work in the browser without uploading files?
We utilize WebAssembly-compiled FFmpeg directly inside your browser. Your computer's processor compresses the video data locally, saving bandwidth and keeping your videos private.
Will compressing a video add a watermark to my output file?
No. None of our tools ever place watermarks, branding, or logo overlays onto your videos.
Can I export subtitle files like SRT and VTT?
Yes, our Video Caption Generator allows you to edit captions directly and export either an .srt file or an MP4 video with embedded subtitles.
What video formats are supported?
We support MP4, MOV, MKV, WebM, AVI, FLV, and WMV video containers.