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. Our subtitle editor is completely free to use. No signup, no credit card, no trial limits. Edit subtitles online with full access to all features including timing controls, text editing, and format conversion.

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.

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.

Upload your subtitle file

Upload your subtitle files

or drag and drop

Supported formats: .srt, .vtt, .sbv, .sub, .ass, .ssa

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:

Real-time Preview & Editing: Edit subtitles with instant preview as you type. See every change reflected immediately so you can ensure perfect synchronization with your video. No need to guess—our subtitle editor online shows you exactly how your subtitles will look and feel before you export. Perfect for fixing typos, adjusting line breaks, or rewriting dialogue for clarity.
Advanced Timing Controls: Fine-tune subtitle timing with frame-accurate controls, batch time shifting, and waveform visualization. Shift entire subtitle blocks or adjust individual cues by milliseconds. Fix sync issues caused by variable frame rates, delayed audio, or mismatched cuts. Our free subtitle editor makes it easy to align captions with your video's timeline.
Smart Text Tools: Powerful text editing features including spell check, auto-formatting, find & replace, and support for multiple text formats and styles. Edit subtitles online with bulk operations for common corrections. Fix capitalization, remove extra spaces, or apply consistent formatting across hundreds of lines in seconds.

How It Works

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.

Step 1 of 0

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

SRT

SubRip—the most common format. Simple, widely compatible, used by YouTube and most video platforms.

.vtt

VTT

WebVTT—native HTML5 format. Ideal for web browsers and streaming with built-in styling support.

.ass

ASS

Advanced SubStation Alpha—supports fonts, colors, positioning, and karaoke effects for styled subtitles.

.ssa

SSA

SubStation Alpha—legacy format for styled subtitles. Compatible with most professional subtitle tools.

.sbv

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. Our subtitle editor is completely free to use. No signup, no credit card, no trial limits. Edit subtitles online with full access to all features including timing controls, text editing, and format conversion.
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.

Subtitle Translator Subtitle Converter Subtitle Cleaner