Audio & Video Tools

YouTube Thumbnail Downloader

Download YouTube thumbnails in HD, 1080p, 4K and more. Our free online tool works in your browser, requires no signup, and keeps your data private. Fast, easy.

VTT to Text Converter

VTT to Text Converter

VTT to SRT Converter

VTT to SRT Converter

Call Recorder

Record audio calls and conversations online. High-quality voice recording with download options. Perfect for interviews, meetings, and important conversations.

Tone Generator

Generate pure audio tones and frequencies online. Test your speakers, tune instruments, or create audio signals with our free tone generator tool.

Screen Recorder

Record your screen, webcam, or both with our online screen recorder. No installation required, works directly in your browser with high-quality recording and instant download.

Gif Player

Play, pause, and control animated GIF images online. Free GIF player with playback controls, speed adjustment, and frame-by-frame navigation.

MP3 to Base64 Converter

Convert MP3 audio files to Base64 format instantly. Free online MP3 to Base64 converter with batch processing support.

Gif Viewer

Upload or paste GIF URL to preview animated GIFs in browser

GIF Splitter

Split animated GIF files into individual frames directly in your browser.

Playback Speed Calculator

Calculate effective duration and time saved when changing video or audio playback speed instantly in browser.

SRT to CSV

Convert SRT subtitle files to CSV format online. Easily extract timestamps and subtitle text into a spreadsheet.

SRT to Excel

Convert SRT subtitle files to Excel format online. Extract subtitle timestamps and text to an Excel spreadsheet.

SRT to XLSX

Convert SRT subtitle files to XLSX format online. Import subtitles into an Excel workbook instantly.

SRT to XLS

Convert SRT subtitle files to XLS format online. Download subtitle cues as an XLS spreadsheet.

SRT to Text

Convert SRT subtitle files to plain text online. Remove timestamps and subtitle numbers to get clean text.

SRT to VTT

Convert SRT subtitle files to WebVTT (.vtt) format online. Keep formatting and adjust time formats automatically.

Add or Replace Audio in Video

Easily add new audio to your video (mixing with original sound) or completely replace the video's existing audio. Keeps original video length. Option to loop shorter audio. Adjust added audio volume in dB.

Add Watermark to Video

Easily add a text or image watermark to your videos online. Customize position, size, font, and color. No uploads required.

Adjust Video Speed

Easily change video playback speed (slow motion or fast forward) online. Supports 0.25x to 4.0x speed adjustment. Free, client-side processing.

Audio Extractor

Extract high-quality audio tracks from video files (MP4, WebM) directly in your browser without uploading files to any server.

Audio Splitter

Cut or split your audio files into smaller segments. Select start and end times to trim and download your audio clip instantly.

CSV to SRT Converter

Convert CSV subtitle data to SRT format instantly. Supports multiple time formats, automatic time detection, and one-click download.

Flip Video

Flip videos horizontally or vertically in your browser. 100% client-side processing for complete privacy.

MP3 Looper

Upload an MP3 or audio file, select a specific region, and loop it seamlessly with adjustable playback speed and visual waveform.

MP3 Reverser

Upload your MP3 or other audio files and reverse them instantly online. Download the reversed audio in your browser, free and with no signup required.

MP4 to GIF Converter

Convert MP4 and other video files into high-quality animated GIFs directly in your browser. Customize resolution, frame rate, and speed.

Camera Recorder

Record video from your webcam, take screenshots, and download captures directly in your browser. No installation required.

Audio File Size Calculator

Estimate uncompressed audio file size from bit depth, sample rate, duration, and channel count with bitrate and storage breakdown.

BPM Calculator

Convert BPM to beat duration in seconds and milliseconds, calculate note lengths from tempo and time signature, or find BPM from bar duration.

Chord Calculator

Find the notes and scale-degree formula for major, minor, seventh, ninth, suspended, and other chord types in any key.

Chord Finder

Enter two to five notes and discover matching chord names ranked by likelihood, with optional bass note filtering.

Chord Inversion Calculator

Build chord inversions in any key with root position, first, second, and third inversion notes plus slash chord notation.

Chord Progression Generator

Generate chord progressions in any key from common patterns like I-V-vi-IV, ii-V-I, and custom Roman numeral sequences.

Chord Transposer

Transpose chords by semitone interval or between musical keys, with correct enharmonic spelling for the destination key. Free, browser-based, no signup.

Delay Reverb Calculator

Calculate delay and reverb note durations in milliseconds from BPM, plus pre-delay and decay time for tempo-synced audio production.

Frames to Timecode Calculator

Convert frame numbers to SMPTE timecode with support for common frame rates like 24, 25, 30, and 60 fps.

Film Calculator

Calculate motion picture film length, run-time, and frame count from film format, frame rate, and shooting duration in seconds with this free browser tool.

Fret Calculator

Calculate guitar fret positions and spacing using the rule of 18 and scale length for luthiers and players.

Guitar String Tension Calculator

Calculate guitar string tension from scale length, pitch frequency, and string unit weight for balanced string sets.

Music Duration Calculator

Calculate note and rest lengths in seconds from BPM, time signature, and note type, including dotted and triplet values. Free browser tool for planning rhythms.

Music Interval Calculator

Calculate musical interval names, semitone distance, and frequency ratio between two notes.

Music Scale Calculator

Generate major, minor, pentatonic, blues, and modal scale notes from any root note.

Key Signature Calculator

Find major and minor key signatures, sharps, flats, and relative keys from a root note.

Note Frequency Calculator

Calculate musical note frequency in Hz from note name and octave using equal temperament tuning.

Port Length Calculator

Calculate bass reflex port length and diameter from enclosure volume, tuning frequency, and port type for subwoofer boxes.

Speaker Box Calculator

Calculate subwoofer enclosure volume from driver Thiele-Small parameters or box dimensions, plus ported port length.

Streaming Bitrate Calculator

Estimate video streaming bitrate from resolution, frame rate, and codec efficiency for live or on-demand streams.

Timecode to Frame Calculator

Convert SMPTE timecode (HH:MM:SS:FF) to absolute frame numbers for common video frame rates.

Semitone Calculator

Convert between frequencies in hertz and musical semitones or cents using equal temperament tuning.

Vocal Range Calculator

Find your vocal range in semitones and voice type from lowest and highest notes with MIDI frequency conversion.

Video Frame Size Calculator

Calculate video frame size in bytes, storage per minute, and total file size from resolution, bit depth, and frame rate.

Video Size Calculator

Estimate compressed video file size from duration, resolution bitrate presets, and audio bitrate.

Helmholtz Resonator Calculator

Calculate Helmholtz resonator frequency from neck dimensions, cavity volume, and speed of sound.

Reverberation Time Calculator

Calculate room reverberation time RT60 using Sabine's equation from room volume, surface area, and absorption coefficients.

Sound Absorption Coefficient Calculator

Calculate sound absorption coefficient from incident and reflected sound intensity or pressure levels.

Audio to WAV Converter

Convert MP3, OGG, AAC, FLAC, M4A, and other browser-supported audio files to uncompressed 16-bit WAV right in your browser, with file details, instant playback, and download. No uploads, nothing stored.

Audio Equalizer

Adjust audio frequencies with a 6-band equalizer covering 60 Hz to 10 kHz, with live preview, one-click presets, and WAV export. Everything runs locally in your browser with no uploads.

Audio Merger

Merge two or more audio files into a single track. Reorder, preview, and download the combined audio as WAV. Everything runs locally in your browser with no uploads.

Audio Recorder

Record audio from your microphone in the browser with a live level meter, timer, pause and resume, instant playback, and WebM download. No account, no signup, and no uploads.

Audio Speed Changer

Speed up or slow down any audio file from 0.5x to 3x with pitch-shifting playback, instant preview, and WAV export. Everything runs locally in your browser with no uploads.

Audio Volume Booster

Boost or reduce the volume of any audio file from 0.1x to 5x with clip-safe normalization, live preview, and WAV export, all processed locally in your browser.

BPM Detector

Detect the BPM of any audio file directly in your browser. Automatic tempo analysis with a tap tempo fallback, confidence score, and no uploads.

BPM Tap Tempo

Tap along with any song to detect its tempo instantly. Mouse and keyboard tapping, rolling average BPM, interval stats, and confidence feedback.

Guitar Chord Generator

View guitar chord diagrams for any root note and chord type. See finger positions, fret numbers, and open or muted strings for major, minor, seventh, sus, dim, and augmented chords.

Guitar Tuner

Tune your guitar with your microphone using real-time pitch detection. Supports standard and alternate tunings with cents-offset feedback.

Music Key Transposer

Transpose chord progressions between all 12 keys instantly. Enter chords, pick the original and target key, and copy the transposed progression with a chord by chord mapping.

Metronome

Practice with a precise online metronome using the Web Audio API. Set any tempo from 20 to 300 BPM, pick a time signature, tap to find tempo, and follow the visual beat.

Piano Chord Finder

Pick a root and chord type to see the notes, intervals, and highlighted keys on a piano keyboard.

Sleep Sounds

Mix rain, white noise, fan, and other ambient layers with individual volume controls and an optional sleep timer in your browser.

Text To Speech

Listen to text with browser speech synthesis, adjustable voice, rate, and pitch.

Video Muter

Upload a video and download a copy with the audio track removed. Processing runs in your browser with FFmpeg.

Video Frame Extractor

Capture still frames from uploaded videos at any timestamp and download them as PNG images in your browser.