SIMPLE JOBS. SMALL TOOLS.
A little tool
for that.
Clean a file. Fix a subtitle. Test your gear. Find the tempo. Make room to focus.
63 useful little things, ready when you need them.
63 tools, one small collection.
Tick Timer 2112
A steady ticking countdown, custom durations and four clock colors.
TimersPresentation Timer
A full-screen countdown for talks, meetings and stages that turns amber, then red, and counts overtime.
SubtitlesSubtitle Time Shifter
Move every subtitle earlier or later by an exact number of seconds.
SubtitlesPartial Subtitle Shifter
Fix the timing of a selected range of subtitle cues.
SubtitlesSRT to WebVTT
Convert an SRT subtitle file into a WebVTT caption track.
SubtitlesWebVTT to SRT
Convert WebVTT captions into a numbered SRT subtitle file.
SubtitlesSubtitle to Plain Text
Extract readable dialogue from SRT or WebVTT without timestamps.
SubtitlesSubtitle Cleaner
Trim subtitle whitespace, sort cues and remove exact duplicate cues.
SubtitlesSubtitle File Merger
Combine two subtitle tracks into one chronological file.
SubtitlesSubtitle Frame Rate Fixer
Correct gradual subtitle drift caused by a frame-rate conversion.
Text & JapaneseKatakana Width Converter
Convert half-width and full-width katakana, including voiced sounds.
Text & JapaneseHiragana ↔ Katakana
Switch Japanese kana between hiragana and katakana.
Text & JapaneseFull-width Alphanumeric Converter
Switch Latin letters, digits and ASCII punctuation between full and half width.
Text & JapaneseWhitespace Cleaner
Remove unwanted line padding, repeated spaces and empty lines.
Text & JapaneseDuplicate Line Remover
Keep the first occurrence of each line and remove repeated entries.
Text & JapaneseNatural Line Sorter
Sort lines alphabetically with optional human-friendly number ordering.
Text & JapaneseText & Character Counter
Count characters, words, lines and UTF-8 bytes locally.
Text & JapaneseLiteral Find & Replace
Replace a word or phrase throughout your text without regular expressions.
CSV & dataCSV ↔ TSV Converter
Convert comma, tab or semicolon separated tables while keeping quoted fields intact.
CSV & dataCSV Duplicate Row Remover
Remove duplicate rows from a CSV file while retaining the first occurrence.
CSV & dataCSV Column Extractor
Pick and reorder CSV columns by their column numbers.
CSV & dataJSON Formatter & Validator
Validate JSON and produce an indented or compact version.
CSV & dataJSON to CSV
Turn an array of JSON objects into a CSV table with a combined header.
CSV & dataCSV to JSON
Use CSV headers as keys and turn every data row into a JSON object.
CSV & dataURL Component Encoder
Encode or decode a URL parameter value using UTF-8 percent escapes.
ImagesImage Resizer
Fit an image inside a chosen width and height without stretching it.
ImagesImage Format Converter
Convert between PNG, JPEG and WebP in your browser.
ImagesJPEG / WebP Compressor
Re-encode an image at a chosen quality and compare the file sizes.
ImagesImage Aspect Ratio Cropper
Make a centered crop for square, portrait or landscape layouts.
ImagesImage Rotate & Flip
Rotate a photo by a quarter turn or flip it horizontally or vertically.
ImagesPhoto Metadata Remover
Create a fresh PNG from visible pixels, without copying source EXIF or GPS tags.
ImagesImage Contact Sheet Maker
Arrange several images in a single numbered overview sheet.
SubtitlesSubtitle Color Changer
Set subtitle text to a softer color for OLED and HDR playback, or strip the color tags a file already carries.
SubtitlesSubtitle Mojibake Fixer
Repair subtitles that show garbled accents or symbols instead of the right letters, and save the file as UTF-8.
SubtitlesSubtitle Line Break Fixer
Rewrap long subtitle lines to a readable width over at most two lines.
Calendar (ICS)ICS Calendar Viewer
Open an .ics calendar file and read every event as a plain list or a CSV table.
Calendar (ICS)ICS Time Zone Fixer
Shift every event in a calendar file by a number of hours and optionally rewrite the times as UTC.
Calendar (ICS)ICS Calendar Merger
Combine two calendar files into one and drop the events that appear in both.
Device testsMouse Button & Click Test
Check the left, right, middle and side buttons, the scroll wheel, double clicks and how often your mouse reports movement.
Device testsKeyboard Key Tester
See which keys register, find a stuck key and count how many keys your keyboard reports at the same time.
Device testsTouchpad & Touchscreen Test
Draw a pointer trail, count touch points and check scrolling, pressure and pointer type on a touchpad or touchscreen.
Device testsGamepad Controller Tester
Check every button, trigger and stick of a connected game controller in your browser.
Device testsDead Pixel Test
Fill the screen with plain colors to spot dead, stuck or discolored pixels on a monitor, laptop or phone.
Device testsScreen Refresh Rate Test
Measure the refresh rate your browser actually draws at, with frame times and the longest frame.
Device testsMicrophone Test
See your microphone input level, then record five seconds and play it back.
Device testsLeft & Right Speaker Test
Play a test tone to the left, right or both channels and run a frequency sweep to check speakers or headphones.
Device testsWebcam Test
Check that your camera works, see its real resolution and frame rate, frame your shot and save a snapshot.
Device testsScreen Color Banding Test
Show smooth gradients and near-black and near-white steps to spot banding, color tints and crushed shadows or highlights.
MusicTap BPM Counter
Tap along with a song on a key or the screen and read the tempo in beats per minute.
MusicOnline Metronome with Odd Meters
A steady click from 20 to 300 BPM with accents, tap tempo and odd-meter groups such as 3+2+2.
MusicTone Generator
Play a sine, square, triangle or sawtooth tone at any frequency or note, with a choice of A4 reference pitch.
MusicOnline Tuner & Pitch Detector
Sing or play a note into your microphone and see the note name, frequency and how many cents sharp or flat it is.
MusicVocal Range Test
Sing from your lowest to your highest comfortable note and see your range on a keyboard.
MusicSong Key Finder
Open an audio file to estimate its musical key, with Camelot notation for DJ mixing.
MusicAudio BPM Detector
Open a song or loop to estimate its tempo, with half and double values and an adjustable tempo range.
MusicMono or Stereo Checker
Find out whether an audio file is really stereo, dual mono, silent on one side or out of phase.
SubtitlesLRC Lyrics Timing Editor
Play a song and tap along to add a timestamp to every lyric line, then save an LRC or SRT file.
ImagesPhoto EXIF & GPS Viewer
See the hidden metadata in a photo, including GPS location, camera, lens, date taken and serial numbers.
Print & KDPKDP Paperback Cover Size Calculator
Work out the full cover size, spine width and bleed for an Amazon KDP paperback and download a guide template.
Print & KDPImage Print Size & DPI Checker
See how large an image prints at 300 DPI, check its sharpness on A4 or photo paper, and change the DPI tag without resampling.
CSV & dataCSV Problem Finder
Find the broken rows in a CSV file: wrong column counts, stray quotes, empty rows and duplicate headers.
CSV & dataCSV Encoding Fixer for Excel
Save a CSV as UTF-8 with a byte order mark so Excel opens accented and Japanese text without garbling.
Print & KDPPDF Page Size & Bleed Checker
Check every page size, trim box and bleed in a PDF before printing or uploading to KDP or a print shop.
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Pick a task. Get on with your day.
Each tool does one small job. Text, subtitle, calendar, CSV, image and music tools run on your device, and the device tests use your own hardware. Files are not uploaded to our server. Advertising uses external services. Social and coffee links open external websites.
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