Hex to Base64
Convert a hexadecimal string to Base64, standard or URL-safe.
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JSON to ENV
Flatten a JSON config into .env lines with correct quoting and naming.
Depreciation Calculator
Straight line, declining balance and sum-of-years schedules.
VA Mortgage Calculator
VA loan payment with the funding fee and no mortgage insurance.
Standard Deviation Calculator
Sample and population standard deviation with every step shown.
Mileage Calculator
Mileage reimbursement and the real cost of a trip.
Social Media Image Size Guide
Every current image size for every major platform.
Rounded Corner Image
Round the corners of an image with real transparency.
Image to ICO Converter
Make a multi-size .ico file from any image.
Remove Emojis
Strip emoji and their invisible joiners out of any text.
Common Text Finder
Find the lines, words or phrases two texts have in common.
Text to NATO Alphabet
Spell out text using Alfa, Bravo, Charlie and the rest.
Text to Binary
Convert text into binary, eight bits per character.
HTML Entity Encoder
Escape text so it displays literally in HTML.
Random Text Generator
Generate random strings from any character set you choose.
Slug to Text
Turn a URL slug back into a readable title.
Text Length Counter
Measure text length in characters, words, bytes and lines at once.
Base64 Encoder & Decoder
Convert text to Base64 and back, with full Unicode support.
Embedding Cost Calculator
Estimate the cost and vector storage of embedding a document corpus for RAG.
Line Ending Converter
CRLF to LF and back — the fix for a file that shows as entirely changed in Git.
Screen Resolution Checker
Your screen size, viewport, pixel ratio and which breakpoint is active.
GitHub Actions Generator
Generate a CI workflow with caching, a version matrix and the right permissions.
Luhn Validator
Check any number against the Luhn checksum and see the working.
JavaScript Formatter
Re-indent JavaScript, with strings and regular expressions left alone.
Media Query Generator
Build media queries with framework breakpoints and modern features.
CSS Filter Generator
Stack CSS filters on a real image and copy the declaration.
Base32 Encoder & Decoder
Encode and decode Base32, including the Crockford and hex variants.
TOML to JSON
Convert a TOML config to JSON, with tables and arrays of tables resolved.
XML to JSON
Convert XML into clean JSON, with attributes and text handled predictably.
JSON to Java Class
Generate Java POJOs or records with Jackson annotations from JSON.
JSON Flattener
Collapse nested JSON into one flat level of dot-notation or bracket keys.
JSON Diff
Compare two JSON documents structurally and see exactly which paths changed.
Credit Card Calculator
What minimum payments really cost, and how to beat them.
Average Calculator
Find the mean, median, mode and range of any list of numbers.
Placeholder Image Generator
Make a sized placeholder image with its dimensions on it.
Extract Color Palette From Image
Pull the dominant colours out of any photo.
Photo Collage Maker
Arrange several photos into a clean grid collage.
Stop Word Remover
Strip filler words so the meaningful terms stand out.
Add Prefix
Put the same text at the start of every line.
Text Alignment Tool
Align text left, right, centre or justified with real spacing.
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