Add Subtitles to Video
Burn subtitles into any video — works entirely in your browser.
Upload your video
How to use
- 1
Upload your video file.
- 2
Write subtitles with custom timing, or upload a .SRT file. Choose font size and color.
- 3
Click Burn Subtitles and download the video with permanent subtitles.
Runs entirely in your browser — no uploads.
Add Subtitles to Video Online Free — Burn SRT Subtitles, No Upload
Burn permanent subtitles into any video using Skycally's free online subtitle tool. Write subtitles manually or upload an SRT file. No software, no signup, no upload.
Skycally's Add Subtitles tool lets you permanently burn text captions into any video, directly in your browser. Write subtitle lines with custom start and end times, or upload an existing SRT file. Choose font size and color, then click Burn Subtitles to produce a video with hardcoded captions ready to share anywhere.
Burned-in subtitles (also called hardcoded or open captions) are permanently embedded in the video frames — they appear on every device and platform without needing a subtitle player or separate caption file. This makes them ideal for social media videos, Instagram Reels, TikTok, YouTube Shorts, and any platform where soft subtitle tracks are not supported.
The tool supports SRT (SubRip) subtitle files, the most widely used caption format. SRT files are simple text files that you can create in any text editor. If you already have a subtitle file from a previous project or from a transcript service, you can upload it directly.
All processing runs entirely in your browser using the Canvas API and MediaRecorder — your video never leaves your device. This makes the tool completely private and works without any backend infrastructure.
Frequently Asked Questions
What subtitle formats are supported?
The tool supports SRT (SubRip) format for file uploads — the most widely used subtitle format. You can also write subtitles directly in the manual editor.
Are the subtitles permanent?
Yes. Subtitles are burned directly into the video frames (hardcoded), making them permanently visible on all devices and platforms without needing a subtitle player.
Can I add subtitles in Arabic or other RTL languages?
Yes. The subtitle tool supports all languages including Arabic, Hebrew, and other right-to-left languages. Type your text in the manual editor or include it in your SRT file.
What is an SRT file?
SRT (SubRip Subtitle) is a plain text file containing subtitle lines with their start and end timestamps. You can create one with any text editor using the format: index, timestamp range, then the subtitle text.
Is my video uploaded to a server?
No. All processing happens locally in your browser using the Canvas API. Your video never leaves your device.
What is the output format?
The output is saved as a WebM file. This plays natively in Chrome, Firefox, and Android. For MP4 compatibility, convert the output file after downloading.
Can I customize the subtitle appearance?
Yes. You can set the font size (14–48px) and choose between white, yellow, or cyan text color. All subtitles include a black outline for readability on any background.
Does this work on mobile?
Yes. The subtitle tool is fully responsive and works on smartphones and tablets running Chrome or other modern mobile browsers.
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