Free Online Tools
34 browser-based tools for subtitles, transcription, and audio — 100% private, no uploads.
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Subtitle Converters
SRT to VTT Converter
Convert SRT subtitle files to WebVTT format instantly. Free, private, no upload.
VTT to SRT Converter
Convert WebVTT files to SRT format for broad compatibility. Free, browser-based.
SRT to Plain Text
Strip timestamps and extract clean text from SRT subtitle files.
Text to SRT Converter
Convert a plain text transcript into a numbered SRT subtitle file.
SRT to ASS Converter
Convert SRT files to Advanced SubStation Alpha (ASS) format with styling.
ASS to SRT Converter
Convert ASS/SSA subtitle files to plain SRT format. Strips styling tags.
SRT to SBV Converter
Convert SRT files to YouTube's SBV (SubViewer) format for easy upload.
SBV to SRT Converter
Convert YouTube SBV subtitle files back to universal SRT format.
VTT to Plain Text
Extract clean text from WebVTT subtitle files, no timestamps.
SRT to CSV Converter
Export SRT subtitle data to CSV with index, start, end, and text columns.
SRT to JSON Converter
Convert SRT subtitle files to structured JSON format for developers.
SRT to LRC Converter
Convert SRT subtitles to LRC lyric format for music players.
Subtitle Editors & Validators
Online Subtitle Editor
Edit subtitle text and timestamps directly in your browser. Download as SRT or VTT.
Subtitle Time Shift
Shift all subtitle timestamps forward or backward by a custom offset.
Subtitle Merger
Merge two or more subtitle files into one, with automatic renumbering.
Subtitle Splitter
Split a subtitle file into multiple parts by time range or entry count.
Subtitle Character Counter
Count characters per line across subtitle files to meet broadcast standards.
SRT File Validator
Validate SRT files for formatting errors, overlaps, and encoding issues.
Calculators & Utilities
Speech Time Calculator
Calculate how long it takes to read or speak a piece of text aloud.
Reading Time Calculator
Estimate reading time for articles, transcripts, and documents.
Audio File Size Calculator
Calculate the file size of audio recordings based on format and duration.
Audio Duration Calculator
Calculate audio duration from file size, bitrate, and channel count.
Playback Speed Calculator
Calculate how long it takes to watch or listen at different speeds.
Transcription Cost Calculator
Estimate the cost of transcribing audio using major services vs. local AI.
YouTube Transcript Extractor
Extract and download the auto-generated transcript from any YouTube video.
YouTube Timestamp Generator
Generate YouTube chapter timestamps from a transcript or topic outline.
Audio Waveform Generator
Generate a visual waveform image from an audio file in your browser.
Podcast Show Notes Template
Generate structured podcast show notes from episode details and transcript.
Filler Word Counter
Count filler words (um, uh, like, you know) in transcripts.
Interview Transcript Template
Format raw interview transcripts with speaker labels and clean layout.
Meeting Minutes Template
Generate structured meeting minutes from notes or a transcript.
Free Audio Transcription
Learn how to transcribe audio files for free using MacParakeet on Mac.
Free Video Transcription
Transcribe video files locally on your Mac -- no cloud, no API key needed.
Live Voice to Text
Convert live speech to text in your browser using the Web Speech API.
Turn speech into text in seconds
MacParakeet runs 100% on your Mac — no cloud, no subscription, no upload.
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