View video information
Check duration, resolution, codec, frame rate, format and file size.
Free Online Video Tools — Trim, Rotate, Extract Audio and Edit Subtitles
Trim, rotate, mute and speed up videos, create GIFs, extract audio, capture frames and edit subtitles locally without uploading files.
Popular video processing tasks
Work with video clips, audio, frames, dimensions and subtitle timing directly on your device without sending source files to the server.
Extract a video frame
Seek to a precise moment and save the current frame as JPG or PNG.
Create a video cover
Turn a selected frame into a titled cover image in common aspect ratios.
Convert SRT and VTT subtitles
Convert subtitle timestamps and cue text between SRT and WebVTT.
Inspect frames and covers
Check video properties, capture exact frames and create thumbnails for publishing workflows.
Video Metadata Viewer Online — Codec, FPS and Resolution
Use this video metadata viewer online to inspect duration, dimensions, codec, frame rate, format and file size without uploading.
Open tool →Video Frame Extractor Online — Save JPG or PNG
Use a video frame extractor online to seek to an exact moment and save the current frame as JPG or PNG locally.
Open tool →Video Cover Generator Online — Create a Thumbnail
Create a video thumbnail online from a selected frame, crop it to a common aspect ratio and add an optional title locally.
Open tool →Video Aspect Ratio Calculator Online
Use a video aspect ratio calculator online to simplify width and height and calculate matching dimensions without uploading a file.
Open tool →Trim, rotate and retime
Correct clip timing, orientation, sound and playback speed without sending source video to a server.
Trim Video Online — Cut MP4, WebM and MOV Locally
Trim video online by selecting an exact start and end time, then download the cut segment without uploading the source.
Open tool →Rotate Video Online — 90 or 180 Degrees
Rotate video online clockwise, counterclockwise or 180 degrees and export a compatible MP4 locally.
Open tool →Mute Video Online — Remove Audio Locally
Mute video online by removing its audio track locally, then download a silent copy without re-encoding the picture.
Open tool →Change Video Speed Online — Speed Up or Slow Down
Change video speed online from 0.5× to 2× while keeping available audio synchronized in a local MP4 export.
Open tool →Convert and optimize video
Convert common containers, reduce file size and standardize resolution or frame rate locally.
MOV to MP4 Converter Online — Convert Locally
Convert MOV to H.264 MP4 online in your browser without uploading the video.
Open tool →WebM to MP4 Converter Online — Local H.264 Conversion
Convert WebM to compatible H.264 MP4 locally in your browser with optional AAC audio.
Open tool →MP4 to WebM Converter Online — VP8 and Vorbis
Convert MP4 to VP8 WebM locally in your browser for modern web playback.
Open tool →MKV to MP4 Converter Online — Convert Matroska Locally
Convert MKV to H.264 MP4 in your browser without uploading the Matroska video.
Open tool →AVI to MP4 Converter Online — Convert Locally
Convert AVI to compatible H.264 MP4 locally with FFmpeg WebAssembly.
Open tool →Video Compressor Online — Reduce MP4 Size Locally
Compress video locally with selectable quality and resolution limits without uploading it.
Open tool →Video Resolution Converter Online — 360p to 1080p
Resize video to 360p, 480p, 720p or 1080p locally and export MP4.
Open tool →Video Frame Rate Converter Online — Change FPS Locally
Change video to 24, 25, 30, 50 or 60 FPS locally and download an MP4.
Open tool →Subtitles, GIF and audio
Convert and synchronize captions, make short GIFs or save the soundtrack from a video.
SRT to VTT Converter Online — VTT to SRT
Convert SRT to VTT online or change WebVTT back to SubRip while preserving subtitle cue times and text locally.
Open tool →Subtitle Time Shifter Online — Sync SRT and VTT
Shift every SRT or VTT subtitle cue forward or backward by an exact number of seconds directly in your browser.
Open tool →Subtitle Merger and Splitter Online — SRT and VTT
Merge two SRT or VTT subtitle tracks by time, or split one subtitle file at a selected timestamp locally.
Open tool →Video to GIF Converter Online — Create GIF Locally
Convert video to GIF online from a selected segment with adjustable width and frame rate, entirely in your browser.
Open tool →Extract Audio from Video Online — Save MP3 or WAV
Extract audio from video online and save the soundtrack as MP3 or WAV locally without uploading the source clip.
Open tool →Local processing and privacy
Video and subtitle files are read and processed directly by your browser and are not uploaded to Tools12345. Trimming, rotation and conversion load the local processing core on demand and can use significant device CPU and memory.