Free Online Tools
No installation needed. Everything runs in your browser, so your data stays safe.
Speech Time Calculator
Turn a word count or script into speaking time and reading time, or find how many words fit a set time.
Text Censor & Redactor
Censor or redact words, emails, phone numbers, and card numbers with asterisks, bars, or labels.
Text Splitter
Split long text into parts by character or word count without cutting words.
Business Days in a Month
Count business days in any month, excluding weekends and U.S. federal holidays.
Sort Lines Alphabetically
Sort lines A–Z, by the number in each line, or by length, and remove duplicates.
Remove Line Breaks from PDF Text
Join lines wrapped by PDF copy-paste while keeping paragraphs, lists, and headings.
Remove Leading & Trailing Spaces
Trim spaces, tabs, and hidden characters from the start and end of each line or the whole text.
Character Frequency Counter
Count how often each character, word, or phrase appears, with letter frequency and keyword density.
Character Sheet Generator
Build an OC character sheet from a form: basics, looks, personality, backstory, and relationships. Get a bio, a PNG card, and Markdown or JSON export.
Whitespace Visualizer
Show spaces, tabs, non-breaking spaces, and zero-width characters as symbols, then clean them up.
Emoji Remover
Remove emojis from text, including flags and skin-tone emojis, and keep the ones you choose.
Payment Due Date Calculator
Calculate invoice due dates from Net 30, Net 60, or EOM payment terms.
Isometric Grid Generator
Make isometric grids of lines or dots at any angle, stack cubes, and print or save them as SVG or PNG.
Cups to Grams Converter
Convert cups, tablespoons and teaspoons to grams, and grams back to cups, for flour, sugar, butter and more. Compare US, UK and Australian cups.
Split Text by Number of Lines
Split text every N lines or into equal parts. Repeat a CSV header, add line numbers, and download chunks as a ZIP.
Number Sequence Generator
Generate numbered, lettered, or dated lists with leading zeros, a prefix or suffix, and comma or line output.
Week Number Calculator
Find the ISO 8601 or US week number of any date, look up a week's dates, and see a full year calendar.
OG Image Resizer & Preview
Resize images to the 1200x630 Open Graph size, check them, and preview link cards.
Subscription Cost Calculator
Add up your monthly and yearly subscription costs, compare them with U.S. survey figures, and see what annual billing or canceling would save.
Filter Lines Containing Text
Keep or remove lines by keyword or regex, like grep in your browser. Match any or all terms and show context lines.
Altitude to Pressure Calculator
Convert altitude to air pressure and pressure to altitude. Shows inHg, hPa and psi, plus a pressure chart from 0 to 30,000 ft.
League Table Calculator
Enter wins, draws and losses or game scores to get league points, goal difference and a sorted standings table.
Business Day Calculator
Add or count business days and see a monthly calendar with US holidays.
Ghost Leg (Amidakuji)
Match players to results with a random ladder lottery. Pick turn order, winners, or prizes for 2–20 people.
Find Duplicate Lines
Find duplicate lines in any list and count how often each one appears, then copy the unique lines or download a CSV.
Add Text to Each Line
Add a prefix and suffix to every line, with quotes, commas, SQL IN lists, and JSON arrays.
Duplicate Hashtag Remover
Extract hashtags from posts, remove duplicates, and flag tags that break.
Worldbuilding Template
Organize your novel or tabletop RPG world in 12 sections, from geography and history to magic and factions.
Electricity Cost Calculator
Estimate what an appliance costs to run from its watts and daily hours.
SVG to Data URI & Base64 Converter
Convert SVG to a URL-encoded or Base64 data URI, compare sizes, copy CSS, JSX, or Tailwind snippets, and decode data URIs back to SVG.
Dark Mode Color Generator
Turn a light color palette into dark mode colors, check WCAG contrast, and copy CSS variables.
Bio Character Counter
Check your bio against the character limits of Instagram, X, TikTok, Threads, and more.
DPI Calculator
Convert image pixels to print size, find the pixels a print needs, and check your image's actual DPI.
Remove Spaces from Text
Remove spaces, tabs, and line breaks, and find hidden non-breaking and zero-width spaces.
Audio File Size Calculator
Estimate audio file size from duration and bitrate, or sample rate and bit depth.
Hashtag Counter & Limit Checker
Count hashtags and characters and check the limits for Instagram, X, YouTube, and Threads.
Email Extractor
Extract email addresses from text, HTML, or CC lists, remove duplicates, filter by domain, and export names and emails to CSV.
Truth Table Generator
Generate a truth table from a Boolean expression using AND, OR, NOT, XOR, NAND, and NOR. Includes canonical SOP and POS.
Extract URLs from Text
Pull every URL and link out of text, HTML, or logs. Remove duplicates, filter by domain, and export to CSV or JSON.
ENV to JSON Converter
Convert a .env file to JSON or JSON back to .env, with quote, comment, multiline, and type handling.
Remove HTML Tags from Text
Remove HTML tags and extract plain text, with options to keep links, convert tables, or output Markdown.
QR Code Checker
Scan a QR code from an image or camera and preview the full URL, domain, and red flags before you open the link.
Oven Temperature Converter
Convert oven temperatures between °F, °C, and Gas Mark, with fan oven settings and bake time adjustment.
Video File Size Calculator
Estimate encoded video file size from length, bitrate, and codec, or find the bitrate that fits a size limit.
Claude History Viewer
Open your Claude conversations.json export to search, browse, and save chats as Markdown.
Audio Slow Downer & A-B Loop
Slow down or speed up audio and video from 0.25x to 2x without changing pitch, and loop a section between two points.
Plot Outline Template
Outline a story with three-act, hero's journey, seven-point, Freytag's pyramid, or kishotenketsu templates.
Unit Price Calculator
Compare products by price per fl oz, oz, load, sheet or sq ft. Convert sizes, rank up to 8 items, and see the yearly cost of each.
Speech Time Calculator
Turn a word count or script into speaking time and reading time, or find how many words fit a set time.
Text Censor & Redactor
Censor or redact words, emails, phone numbers, and card numbers with asterisks, bars, or labels.
Text Splitter
Split long text into parts by character or word count without cutting words.
Business Days in a Month
Count business days in any month, excluding weekends and U.S. federal holidays.
Sort Lines Alphabetically
Sort lines A–Z, by the number in each line, or by length, and remove duplicates.
Remove Line Breaks from PDF Text
Join lines wrapped by PDF copy-paste while keeping paragraphs, lists, and headings.
Remove Leading & Trailing Spaces
Trim spaces, tabs, and hidden characters from the start and end of each line or the whole text.
Character Frequency Counter
Count how often each character, word, or phrase appears, with letter frequency and keyword density.
Character Sheet Generator
Build an OC character sheet from a form: basics, looks, personality, backstory, and relationships. Get a bio, a PNG card, and Markdown or JSON export.
Whitespace Visualizer
Show spaces, tabs, non-breaking spaces, and zero-width characters as symbols, then clean them up.
Emoji Remover
Remove emojis from text, including flags and skin-tone emojis, and keep the ones you choose.
Payment Due Date Calculator
Calculate invoice due dates from Net 30, Net 60, or EOM payment terms.
Isometric Grid Generator
Make isometric grids of lines or dots at any angle, stack cubes, and print or save them as SVG or PNG.
Cups to Grams Converter
Convert cups, tablespoons and teaspoons to grams, and grams back to cups, for flour, sugar, butter and more. Compare US, UK and Australian cups.
Split Text by Number of Lines
Split text every N lines or into equal parts. Repeat a CSV header, add line numbers, and download chunks as a ZIP.
Number Sequence Generator
Generate numbered, lettered, or dated lists with leading zeros, a prefix or suffix, and comma or line output.
Week Number Calculator
Find the ISO 8601 or US week number of any date, look up a week's dates, and see a full year calendar.
OG Image Resizer & Preview
Resize images to the 1200x630 Open Graph size, check them, and preview link cards.
Subscription Cost Calculator
Add up your monthly and yearly subscription costs, compare them with U.S. survey figures, and see what annual billing or canceling would save.
Filter Lines Containing Text
Keep or remove lines by keyword or regex, like grep in your browser. Match any or all terms and show context lines.
Altitude to Pressure Calculator
Convert altitude to air pressure and pressure to altitude. Shows inHg, hPa and psi, plus a pressure chart from 0 to 30,000 ft.
League Table Calculator
Enter wins, draws and losses or game scores to get league points, goal difference and a sorted standings table.
Business Day Calculator
Add or count business days and see a monthly calendar with US holidays.
Ghost Leg (Amidakuji)
Match players to results with a random ladder lottery. Pick turn order, winners, or prizes for 2–20 people.
Find Duplicate Lines
Find duplicate lines in any list and count how often each one appears, then copy the unique lines or download a CSV.
Add Text to Each Line
Add a prefix and suffix to every line, with quotes, commas, SQL IN lists, and JSON arrays.
Duplicate Hashtag Remover
Extract hashtags from posts, remove duplicates, and flag tags that break.
Worldbuilding Template
Organize your novel or tabletop RPG world in 12 sections, from geography and history to magic and factions.
Electricity Cost Calculator
Estimate what an appliance costs to run from its watts and daily hours.
SVG to Data URI & Base64 Converter
Convert SVG to a URL-encoded or Base64 data URI, compare sizes, copy CSS, JSX, or Tailwind snippets, and decode data URIs back to SVG.
Dark Mode Color Generator
Turn a light color palette into dark mode colors, check WCAG contrast, and copy CSS variables.
Bio Character Counter
Check your bio against the character limits of Instagram, X, TikTok, Threads, and more.
DPI Calculator
Convert image pixels to print size, find the pixels a print needs, and check your image's actual DPI.
Remove Spaces from Text
Remove spaces, tabs, and line breaks, and find hidden non-breaking and zero-width spaces.
Audio File Size Calculator
Estimate audio file size from duration and bitrate, or sample rate and bit depth.
Hashtag Counter & Limit Checker
Count hashtags and characters and check the limits for Instagram, X, YouTube, and Threads.
Email Extractor
Extract email addresses from text, HTML, or CC lists, remove duplicates, filter by domain, and export names and emails to CSV.
Truth Table Generator
Generate a truth table from a Boolean expression using AND, OR, NOT, XOR, NAND, and NOR. Includes canonical SOP and POS.
Extract URLs from Text
Pull every URL and link out of text, HTML, or logs. Remove duplicates, filter by domain, and export to CSV or JSON.
ENV to JSON Converter
Convert a .env file to JSON or JSON back to .env, with quote, comment, multiline, and type handling.
Remove HTML Tags from Text
Remove HTML tags and extract plain text, with options to keep links, convert tables, or output Markdown.
QR Code Checker
Scan a QR code from an image or camera and preview the full URL, domain, and red flags before you open the link.
Oven Temperature Converter
Convert oven temperatures between °F, °C, and Gas Mark, with fan oven settings and bake time adjustment.
Video File Size Calculator
Estimate encoded video file size from length, bitrate, and codec, or find the bitrate that fits a size limit.
Claude History Viewer
Open your Claude conversations.json export to search, browse, and save chats as Markdown.
Audio Slow Downer & A-B Loop
Slow down or speed up audio and video from 0.25x to 2x without changing pitch, and loop a section between two points.
Plot Outline Template
Outline a story with three-act, hero's journey, seven-point, Freytag's pyramid, or kishotenketsu templates.
Unit Price Calculator
Compare products by price per fl oz, oz, load, sheet or sq ft. Convert sizes, rank up to 8 items, and see the yearly cost of each.