Finish the task you need,
without the friction.

Check product create/update CSVs before upload.

Check encoding, price, stock and duplicate values before import.

Check the customer import format and common field errors.

Check the option CSV, name/item order and numeric fields.

Validate Timestamp, Person//Email / ID and $event_id before import.

Check identifiers, duplicates and the 50 MB limit before list import.

Check headers, email, phone, address fields and encoding before upload.

Check encoding, delimiter, CSV syntax and signs of Excel tab conversion.

Inspect likely encoding and comma, tab, semicolon or pipe delimiters.

Find tab conversion, scientific notation and date-like coercion after Excel edits.

Compare header names, order, missing columns and extra columns.

Find duplicate values and row numbers in a selected column.

Split a large CSV into files with a chosen number of rows.

Merge multiple CSV files with matching headers.

Find emoji and special characters that often cause problems in Shift_JIS-based imports.

Convert between CSV and tab-separated text in your browser.

Check timestamps, cue order, start/end times and basic subtitle errors.

Check VCALENDAR / VEVENT structure, UID, DTSTART and basic fields.

Convert Japanese era dates and Gregorian dates line by line.

Normalize Japanese phone numbers and convert between domestic and +81 forms.

Draw a lighthearted fortune and lucky action for today.

Let a playful oracle answer a simple yes-or-no question.

Pick one lunch option at random.

Pick one name or item at random.

Shuffle names into a chosen number of teams.

Create a randomized numbered seating order.

Draw a conversation topic for friends, family or a casual date.

Draw a harmless, lighthearted game penalty.

A playful unofficial compatibility gacha for two four-letter types. Not a psychological assessment.

Choose a four-letter type and draw a playful message for today.

Count characters, lines and words in real time.

Remove duplicate lines while keeping the first occurrence.

Sort lines alphabetically or by length.

Compare two texts line by line and show additions / removals.

Percent-encode or decode URL text.

Format, minify and validate JSON.

Encode or decode Unicode text as Base64.

Convert Unix seconds / milliseconds and human-readable dates.

Calculate final price and savings from a discount rate.

Calculate percentages, percentage values and change rates.

Calculate age from a birth date and target date.

Calculate the difference between two dates in days and weeks.

Generate UUID v4 values in your browser.

Generate SHA-256 / 384 / 512 hashes locally in your browser.

Convert HEX or RGB colors to HEX, RGB and HSL.

Generate random passwords locally with chosen character sets.

Turn a title or phrase into a URL-friendly slug.

Convert text to upper, lower, title, snake, kebab or camel case.

Shuffle input lines into a random order.

Draw random numbers within a chosen range.

Estimate total book/zine weight from trim size, pages, paper gsm and quantity.

Estimate shipping box count from total item volume and box dimensions.

Calculate dimensional weight with a configurable carrier divisor.

Calculate document size including bleed from final trim dimensions.

Convert physical print size and DPI into required pixel dimensions.

Calculate full cover spread size including spine and bleed.

Calculate physical sheet count from page count.

Check whether booklet page count is a multiple of 4.

Estimate spine width from page count and custom sheet thickness.

Check whether display elements fit across a convention table.

Calculate how many products fit in a display grid.

Estimate a practical cash float from prices and expected cash sales.

Calculate units needed to break even on an event.

Calculate convention/event profit and margin.

Split total inventory across event days using custom weights.

Calculate bundle price and savings from item prices and target discount.

Estimate return shipping boxes for unsold books.

Turn rough notes into a categorized convention packing checklist.

Check page filename lists for missing or duplicate sequence numbers.

Calculate how many price tags fit on one print sheet.

Compare two products by unit price.

Calculate gross profit, margin and markup.

Convert tax-inclusive and tax-exclusive prices with a custom rate.

Calculate required hourly rate from target monthly income.

Calculate net working time from start, end and break.

Count weekdays between dates with optional custom excluded dates.

Add or subtract days/weeks from a date.

Calculate elapsed time between two clock times, including overnight.

Scale recipe quantities for a different serving count.

Estimate fuel cost from distance, efficiency and fuel price.

Estimate electricity cost from wattage, hours and kWh rate.

Estimate theoretical transfer time from file size and link speed.

Convert decimal and binary storage units.

Simplify an aspect ratio and calculate matching dimensions.

Calculate resized dimensions while preserving aspect ratio.

Generate a fluid CSS clamp() expression from viewport and size ranges.

Build a URL with standard UTM parameters.

Generate a mailto link from recipient, subject and body.

Parse URL query parameters into a readable list.

Decode JWT header and payload locally. Signature is not verified.

Recursively sort JSON object keys alphabetically.

Remove duplicate values/objects from a JSON array.

Format and validate XML in the browser.

Generate a Markdown table from tab- or comma-separated rows.

Extract lines that appear in both lists.

Extract lines unique to list A or list B.

Find and replace text, optionally using a regular expression.

Add the same prefix and suffix to every line.

Extract selected columns from pasted CSV.

Filter pasted CSV rows by a keyword in a selected column.