Online Video Editor

Install & offline

Preparing offline access. Stay connected until it is ready.

After the first online visit finishes caching, you can open the home page and every tool offline, edit local videos and download results. The online music library needs an internet connection; local music works offline. Format support still depends on your browser’s codecs.

The cache stores app resources, not videos, music, logo images or exports. Closing or reloading clears current files and results. If site data is cleared or the browser removes the cache, reconnect to prepare offline access again.

You can also use Install app or Add to Home Screen in your browser menu. On iPhone / iPad, use Safari’s Share menu → Add to Home Screen. If installation is unavailable, you can still use the site in your browser.

All tools
BROWSER VIDEO TOOLS

Add subtitles to video

Import subtitles, adjust their style and burn them into the video
Processed in your browser.

Videos are processed in your browser and never uploaded.
Free to useSynchronized previewNo registration

How to add subtitles to video

  1. 01

    Select files

    Select or drop one video, then import its subtitle file.

  2. 02

    Import and preview subtitles

    Import text and timing from an SRT, VTT or ASS file, then set the font, outline, background, line spacing and position. Play or select a cue to check synchronization, shift all timings if needed, and export the subtitled video.

  3. 03

    Download results

    Download the subtitled video when processing finishes.

Common questions

Can I turn off subtitles after export?

Subtitles are burned into the picture using your chosen style and become part of the video, so they cannot be turned off after export. Processing re-encodes the video and preserves original audio.

Are automatic captions, TXT or ASS effects supported?

Speech recognition and TXT are not supported. SRT, VTT and ASS import only text, line breaks and timing, without original fonts, positioning, layout, drawings or animation. Subtitle files can be up to 5 MiB; UTF-8 is recommended.

Can I add subtitles in a batch?

This tool processes one video at a time. Download the result and remove the current video before adding another with its own subtitles. Both files are processed in your browser.

Are my videos uploaded?

No. Videos are processed in your browser without registration. Reloading or closing the page clears your current files and results.

Which formats and file sizes are supported?

Video files can be up to 500 MiB. Readable containers include MP4, MOV, WebM and MKV. Burning subtitles requires decoding and encoding support. Export reports an error if audio cannot be preserved.

Add a text watermark

How to use

  1. Select videos

    Select or drop files. The limit is 500 MiB per file and 1 GiB per batch.

    The subtitle tool handles one video at a time and imports text, timing and line breaks from SRT, VTT or ASS, without the original styling or effects. Preview in sync, adjust a shared style and position, and shift subtitle timing. Export burns subtitles into the picture and preserves original audio.

  2. Choose a tool

    Choose mute, compression, text/logo watermark, stickers, music, cut, crop, canvas or speed for every video. Compression offers quality, resolution and output format controls; the final size is checked after export. Music supports volume, original audio mixing and looping. Text and logo watermarks cover the full video by default; drag the time range ends to change when they appear. Stickers have independent time ranges. Join combines the list in order; speed changes also change audio pitch.

  3. Process and download

    Start processing and follow each file's progress. Download results individually or as a ZIP. Changing settings requires processing again.

Videos are never uploaded. Reloading or closing the page clears files and results. Saved presets stay in this browser. Changing language keeps your current files.