Files processed on your device

A useful tool for your next task.

Subtitle, audio, music, file, scheduling, text, calculation, image and PDF tools. No account; processing stays on your device.

Audio & music

Audio timeline editor

Select waveform ranges, split at the playhead, trim and audition edits. Export MP3 or WAV locally.

Audio joiner

Arrange multiple audio files on a timeline, split and trim clips, add fades and export MP3 or WAV.

Online metronome

Practice with adjustable tempo, time signature, subdivisions, accents and tap tempo.

Online chromatic tuner

Tune one note at a time with microphone pitch detection, cents display and an adjustable A4 reference.

Online voice recorder

Record a voice memo or narration in your browser. Pause and resume, watch the input level, listen back and download the original recording, WAV or MP3.

Text

Word counter

Count words, characters, lines and paragraphs in your text.

Remove duplicate lines

Remove repeated lines while keeping their original order.

Text cleaner

Remove unwanted spaces and empty lines with separate controls.

Case converter

Convert text to uppercase, lowercase, sentence case or word initials.

Compare text

Compare two texts and see added, removed and changed lines.

Subtitle workshop

Import and export SRT, VTT, ASS/SSA, LRC, SBV and TTML. Edit bilingual text, adjust cue times and preview locally.

Batch text from a table

Combine a text template with spreadsheet columns to create personalized notices, invitations or descriptions. Review each result and download TXT, ZIP or a printable collection.

TXT to EPUB book builder

Turn text files or your own writing into a reflowable EPUB book. Detect and edit chapters, arrange their order, add book details and a cover, preview and export locally.

Everyday calculators

Percentage calculator

Find a percentage, a share or a percentage change.

Discount calculator

Calculate the final price and savings from a percentage discount.

Split a bill

Split a bill and optional tip fairly, including the last cent.

Ratio calculator

Simplify a ratio or find a missing proportional value.

Dates

Date difference

Count days and weeks between two calendar dates.

Add or subtract days

Find a date by adding or subtracting days or weeks.

Age calculator

Calculate completed years, months, days and total days lived.

Business days calculator

Count working days with your own weekends and holidays.

Printable calendar planner

Create one to twelve monthly calendars with your events, multi-day plans and categories. Preview months, import event tables and export print-ready calendars or editable plans.

Time zone meeting planner

Compare local meeting times for up to eight people, check the full meeting against their available hours, handle daylight-saving changes and download a calendar event.

Unit converters

Length converter

Convert metric and imperial distances.

Weight converter

Convert grams, kilograms, pounds and ounces.

Temperature converter

Convert Celsius, Fahrenheit and Kelvin.

Volume converter

Convert litres, cubic metres and clearly labelled US/UK measures.

Area converter

Convert square metres, hectares, square feet and acres.

Speed converter

Convert km/h, mph, metres per second and knots.

Everyday utilities

QR code generator

Make a QR code for text, a website or Wi-Fi; download PNG or SVG.

Random name picker

Draw one or more names from a list, locally in your browser.

Countdown timer

Set hours, minutes and seconds; pause and resume your countdown.

Stopwatch

Measure elapsed time, record laps and export them as CSV.

Pomodoro timer

Alternate focused work and breaks with adjustable durations.

Batch file organizer

Preview bulk renaming, replace text, number files and group by extension in a ZIP.

Event scheduling assistant

Schedule sessions around people, rooms and fixed times. Identify conflicts and export a timetable.

CSV table workbench

Clean lists and exported tables: trim spaces, remove duplicates, filter, sort, edit cells and choose columns before exporting.

Compare two tables

Compare lists or exports by a unique key. Map differently named columns and find added, removed and changed records.

ZIP file manager

Open ZIP archives, inspect file paths and sizes, extract individual files or selected entries, and create ZIP files locally.

Online teleprompter

Read speeches, lessons and video scripts with adjustable scrolling, large text, mirror mode, fullscreen and keyboard controls.

Flashcard study workspace

Turn question-and-answer tables into flashcards. Edit, shuffle, reverse, practise missed cards and save a portable progress file.

Printable label layout

Turn address lists, names or storage labels into printable sheets. Adjust A4/Letter layouts, margins, copies and skipped positions, then export PDF.

Duplicate file finder

Find identical file contents locally, choose which copy to keep, export a report and download the retained files as ZIP.

Event seating planner

Import a guest list, set table capacities, keep parties together and adjust seats. Export a seating list, printable table cards and a reusable plan.

Recipe scaler & shopping list

Scale several recipes to your guest count, keep fractional ingredient quantities exact and combine matching ingredients into a printable shopping list.

Round-robin schedule & standings

Create a single or double round-robin for 2–20 teams. Track scores, configure points, review standings and export a printable schedule or editable tournament file.

Room furniture layout planner

Set room dimensions, drag and rotate furniture rectangles, check overlaps and export a layout image. Save a local plan to continue arranging later.

Travel packing list planner

Build a packing checklist, scale quantities by travelers and days, assign bags and check packed items. Export CSV, a printable list or an editable local plan.

Printable quiz maker

Write multiple-choice and short-answer questions, assign points and generate shuffled versions with separate answer keys. Save an editable local question bank.

Volunteer shift planner

Plan event shifts, set people’s availability, fill vacancies and adjust assignments. Check overlaps and workload, then export a roster or save an editable plan locally.

Flowchart workspace

Build a flowchart with process, decision and start/end shapes. Drag steps, connect labeled arrows, adjust the canvas and export SVG, PNG or an editable local diagram.

Weighted decision matrix

Compare venues, courses or equipment with your own criteria, weights and ratings. Inspect score breakdowns, test weight changes and export a comparison report locally.

Multiplayer scorekeeper

Keep round-by-round scores for board games, classroom contests and events. Add or subtract points, correct past rounds, show a large scoreboard and export results locally.

Equipment lending tracker

Track shared books and equipment locally. Check available stock, record loans and partial returns, filter overdue entries and export an inventory or lending report.

Linear cut list planner

Plan cuts for timber strips, rods or pipes. Enter stock, required parts, saw kerf and end trim; compare feasible layouts, view each bar and export cut lists and offcuts.

Data chart studio

Turn CSV or pasted tables into grouped bars, lines and pie charts. Edit data, choose series and aggregation, review plotted values, and export PNG, SVG or a printable report locally.

Word search worksheet maker

Create a word search from your own vocabulary. Choose grid size and directions, try it with clicks or keyboard, and export a printable worksheet with a separate answer page.

CSV to contacts workspace

Map CSV columns to contact names, phones and emails. Review errors and possible duplicates, choose rows, then export one VCF or individual cards in a ZIP without uploading contacts.