The Microapp Catalog
746 microapps.
One trip.
Every microapp does one job, in 30 seconds, at the quality Big Software charges by the seat for. Pick one below, or use search above.
Featured microapp
Bank Statement Converter
Drop in a PDF statement. Get clean CSV, XLSX, QIF or OFX back — every transaction, parsed in your browser.
Essentials
The tools everyone reaches for first
Word Counter
Count words, characters & reading time
Percentage Calculator
Calculate percentages, discounts & more
BMI Calculator
Calculate your Body Mass Index
Color Converter
Convert HEX, RGB, HSL, HSV colors
JSON Formatter
Format and validate JSON data
Password Generator
Generate secure random passwords
Age Calculator
Calculate your exact age in years, months, days
Tip Calculator
Calculate tips and split bills
QR Code Reader
Scan and decode QR codes from images
Lorem Ipsum
Generate placeholder text instantly
Case Converter
UPPER, lower, Title, camelCase & more
Loan Calculator
Calculate monthly payments & total interest
New this week
Fresh from the agent team.
Background Remover
Cut the background out of a photo. Full size, in your browser.
Sod Calculator
Lawn size in, sod order out — pieces, pallets, and what it costs.
Image Upscaler
Make an image 2× or 4× larger and sharper — runs on your device, no upload, no credits, no watermark.
Presentation Timer
A talk countdown that turns yellow, then red, then counts how far over you went.
Scoreboard
Two big scores, side by side. Tap to add a point. Full screen for the room.
Raffle Generator
Draw raffle winners, weighted by tickets, in order.
Protect PDF
Add a password to a PDF, in your browser
JSON to XML
Paste JSON, get well-formed XML. Arrays, attributes and big numbers handled.
SVG Optimizer
Shrink an SVG without changing how it looks. Runs in your browser; the file never leaves your device.
Random Superhero Generator
Rolls an original superhero — name, power, origin, weakness, costume, and secret identity.
Hours Ago Calculator
What time was it 5, 24, or 48 hours ago? Counted from right now.
Image to Base64
Turn an image into a Base64 data URI, CSS, or img tag
Weeks From Today Calculator
What date is 6, 12, or 26 weeks from today — counted from today, no date entry needed.
Random Setting Generator
A place, a time, one detail, and the trouble already there. Ready for your story.
Rent Increase Calculator
Old rent, new rent. See the increase in percent, per month, and per year.
Escrow Calculator
Your yearly tax and insurance bills, turned into the monthly escrow payment.
Random Hobby Generator
Get one hobby you could start this week — and the first thing to do.
Random Bird Generator
Roll a real bird — where it lives, how big it gets, and one thing worth knowing.
Fill PDF Form
Type into a PDF form's boxes and download it filled
Devil Fruit Generator
Rolls an original Devil Fruit — its name, type, look, power, and the price of eating it.
JavaScript Minifier
Shrink JavaScript in your browser. See the bytes saved, copy the result.
Color Blindness Simulator
See an image the way color-blind eyes see it
Random Aesthetic Generator
Roll an aesthetic — with a palette you can copy and four things that make it look right.
Midrange Calculator
The midrange of any list of numbers, with the working shown and the mean and median beside it.
CBR to PDF
Turn a CBR or CBZ comic into a PDF, pages in the right order. Nothing uploads.
MACRS Depreciation Calculator
Your asset's tax deduction for every year, straight from the IRS tables.
Set Builder Notation Calculator
Rewrite any set in set-builder, interval, and inequality notation
Basis Points Calculator
Basis points to percent and back, exact to the last digit. Plus what they're worth on any amount.
Seating Chart Generator
Paste names, pick desks or tables, shuffle. Keeps apart who you say. Prints on one page.
Random Question Generator
One good question on screen. Ask it, hit Next — no repeats until the pack runs out.
For writers
Drafting, editing, polishing
Word Counter
Count words, characters & reading time
Character Counter
Count characters with and without spaces
Paraphrasing Tool
Rewrite text in your own words
Text Summarizer
Summarize long text into key points
AI Bio Generator
Generate professional bios for LinkedIn
Cover Letter Generator
Generate tailored cover letters fast
Hashtag Generator
Generate trending hashtags for social media
Caption Generator
Generate engaging captions for Instagram
AI Poem Writer
Write poems on any topic or style
Outline Generator
Generate an AI-style outline from a topic
Thank You Note Generator
Generate heartfelt thank you notes
Email Subject Generator
Generate high-open-rate email subject lines
For developers
Format, encode, debug, ship
JSON Formatter
Format and validate JSON data
Base64 Encoder/Decoder
Encode and decode Base64 strings
Regex Tester
Test and debug regular expressions
JSON to CSV
Convert JSON arrays to CSV format
CSV to JSON
Convert CSV to JSON format
URL Encoder/Decoder
Encode and decode URLs
HTML Encoder/Decoder
Encode and decode HTML entities
SHA-256 Generator
Generate SHA-256 cryptographic hash
MD5 Hash Generator
Generate MD5 hashes from any text
UUID Generator
Generate random UUID v4 identifiers
Curl Builder
Build cURL commands from a URL
Binary Decoder
Decode binary code (8-bit ASCII bytes) into readable text — accepts spaces, commas, or no separators
Math made easy
Calculators that do the work for you
Percentage Calculator
Calculate percentages, discounts & more
BMI Calculator
Calculate your Body Mass Index
Tip Calculator
Calculate tips and split bills
Loan Calculator
Calculate monthly payments & total interest
Compound Interest Calc
See how your money grows over time
Average Calculator
Calculate mean, median, mode & range
Standard Deviation Calculator
Sample and population SD plus mean, median, variance, min/max — paste any list of numbers
Factorial Calculator
Compute n! exactly for n up to 170, scientific notation up to n = 1000
Combination Calculator
C(n, k) = n! / (k! × (n−k)!) — selections where order does not matter
Permutation Calculator
P(n, k) = n! / (n−k)! — arrangements where order matters
Logarithm Calculator
ln (natural), log₁₀, log₂, or any custom base — answers 'what power gives me this number?'
Long Division Calculator
Divide step-by-step with the algorithm you learned in school — quotient, remainder, and every intermediate step
Browse by category
Seven categories. Every microapp belongs to one. Pick a shelf.
Text Tools
Word counters, character counters, text formatters, case converters, diff checkers, and more — all free, all instant.
Browse →Number Calculators
Percentage calculators, unit converters, loan calculators, BMI, GPA, tip calculator, and dozens more math tools.
Browse →Time & Date Tools
Age calculators, date difference tools, countdown timers, stopwatch, Pomodoro timer, and more.
Browse →Generators
Password generators, lorem ipsum, random number generators, coin flip, dice roller, name generators, and more.
Browse →Dev Tools
JSON formatter, Base64 encoder, QR code reader, regex tester, cURL builder, Markdown to HTML, and more.
Browse →Writing & AI
AI bio generator, paraphrasing tool, text summarizer, cover letter generator, hashtag generator, and more.
Browse →Colors & Design
Color converter, hex to RGB, color palette generator, gradient generator, color name finder, and more.
Browse →PDF Tools
Convert images to PDF, extract pages, merge files, sign documents, unlock password-protected PDFs — all client-side, files never leave your browser.
Browse →Image Tools
Compress, resize, convert, and crop images — PNG, JPG, WebP, AVIF, HEIC. Every operation runs in your browser, no upload, no watermark.
Browse →Video & Audio
Pull the audio out of a video and convert between video and audio formats. Every conversion runs in your browser — no upload.
Browse →