Editsub
Free Subtitle Editor Online - Edit SRT, VTT, ASS
Edit subtitles online for free with no download required. Our subtitle editor supports SRT, VTT, ASS, SSA, and SBV formats. Fix timing, correct text, and sync subtitles to your video instantly in your browser.
- Waveform & Video Sync
- Precise Timing Tools
- Line & Text Tools
or drag and drop
Supported formats: .srt, .vtt, .sbv, .sub, .ass, .ssa
Subtitle Editor Features
Our subtitle editor online gives you everything you need to edit subtitles online quickly and professionally. Here are the key features that make editing subtitles easy:
- Waveform & Video Sync
- Drag cues on the audio waveform, snap them to speech, and preview every edit on your video or a YouTube link.
- Precise Timing Tools
- Shift all or selected lines, use two-point sync, or convert frame rates to fix drifting subtitles in seconds.
- Line & Text Tools
- Split, merge, insert, and reorder lines, strip formatting, and undo any step.
How to Edit Subtitles Online
Edit and translate subtitles in just a few steps - no software installation required.
Upload Your File
Upload a subtitle file (SRT, VTT, ASS, SSA, SBV) or paste text directly into the editor.
Edit Text & Timing
Modify subtitle text, fix timing, and fine-tune synchronization with your video.
Translate
Translate subtitles to 100+ languages using AI. Optionally keep the original text for bilingual output.
Preview
Review your subtitles with video preview to ensure everything looks right.
Export
Download subtitles in your preferred format - SRT, VTT, ASS, or plain text.
Why Choose Our Subtitle Editor?
Edit subtitles online without the hassle of desktop software. Our free subtitle editor is built for creators who need speed, simplicity, and reliability.
Free & No Download
Edit subtitles online for free with no signup required. No software to install-everything runs in your browser. Start editing in seconds.
Privacy First
Your files stay on your device. We process subtitles locally when possible and never store your content on our servers without your permission.
All Formats Supported
Edit SRT, VTT, ASS, SSA, and SBV files. Open any format and export to any other-no conversion limits or restrictions.
Works Everywhere
Use our subtitle editor online on any device-Windows, Mac, Linux, or mobile. No platform lock-in, no compatibility issues.
Supported Subtitle Formats
Our subtitle editor supports all major subtitle formats. Edit subtitles online regardless of format-we handle the rest.
SRT
SubRip-the most common format. Simple, widely compatible, used by YouTube and most video platforms.
VTT
WebVTT-native HTML5 format. Ideal for web browsers and streaming with built-in styling support.
ASS
Advanced SubStation Alpha-supports fonts, colors, positioning, and karaoke effects for styled subtitles.
SSA
SubStation Alpha-legacy format for styled subtitles. Compatible with most professional subtitle tools.
SBV
YouTube SubViewer-simple format used by YouTube's native subtitle editor.
Frequently Asked Questions (FAQ)
- How to edit subtitle timing online?
Open your subtitle file in our editor, select the cue you want to adjust, and use the timing controls to shift start/end times. Use batch shift to move all subtitles by a fixed offset (e.g., +2 seconds). For frame-accurate edits, use the waveform view to align timing with your video.
- What subtitle formats can I edit?
You can edit SRT, VTT, ASS, SSA, and SBV formats. Open any supported format and export to any other-our subtitle editor handles conversion automatically. No need for separate conversion tools.
- Is the subtitle editor really free?
Yes. Opening, editing, syncing, and exporting subtitles is free with no signup or credit card, including timing controls, text editing, and format conversion. Only optional AI tools, such as AI translation and speaker detection, use credits.
- Can I use Subtitle Edit online without installing it?
Subtitle Edit is a popular desktop subtitle program. If you just need to fix a file quickly, Editsub covers the core editing workflow in your browser: open SRT, VTT, ASS, SSA, or SBV, adjust timing on a waveform, edit text, and export, with nothing to install.
- Can I edit subtitles without downloading software?
Absolutely. Our subtitle editor runs entirely in your browser. Just open the page, upload your file, and start editing. No installation required-works on any device with a modern web browser.
- How to fix subtitle sync issues?
Use the batch time shift feature to move all subtitles forward or backward. If sync drifts over time, adjust individual cues or use the waveform to align timing precisely. Common causes: variable frame rate, audio delay, or incorrect original timing.
Everything You Need to Work With Subtitles
A complete toolkit for editing, translating, and converting subtitle files - right in your browser.