Utilities for office work and development
The small tools you reach for several times a day, gathered in one place. No sign-up, no installation, and whatever you paste stays inside your browser.
Developer
JSON Formatter
Indent JSON so you can read it, or squeeze it onto one line. Syntax errors are reported with the line they are on.
Base64 Encoder & Decoder
Convert text or files to Base64 and back, including the URL-safe variant you can drop straight into a query string.
URL Encoder & Decoder
Percent-encode the characters a URL cannot carry, and decode them back. Paste a whole URL to see its query string laid out as a table.
JWT Decoder
Unpack the header and payload of a JWT and read the issued-at and expiry claims as real dates.
Hash Generator
Compute the MD5, SHA-1, SHA-256 and SHA-512 hashes of a piece of text or a file. Handy for checking that a download arrived intact.
UUID Generator
Generate as many version 4 UUIDs as you need, in uppercase or with the hyphens stripped out.
Timestamp Converter
Turn a Unix timestamp into a readable date, or a date into a timestamp, and see the same moment across several time zones.
Regex Tester
See what a regular expression actually matches as you type it. Capture groups and named groups are laid out in a table.
Cron Expression Parser
Spells out in plain English when a cron expression fires, and lists the next five run times.
Text Diff
Highlights what changed between two blocks of text. Compare line by line or word by word.
Color Converter
Convert between HEX, RGB and HSL, and check whether a text and background pair clears the WCAG contrast requirement.
JSON ↔ CSV Converter
Turn a JSON array into CSV, or a CSV back into JSON. Choose the delimiter and say whether the first row holds column names.
Office
Character Counter
Counts characters with and without spaces, plus words, lines, paragraphs, and UTF-8 bytes. Useful whenever a field has a length limit.
Text Cleaner
Change case, sort lines, drop duplicates, tidy up whitespace. Pick the steps you want and they run in the order you picked them.
VAT and Percentage Calculator
Work out VAT from either the net amount or the gross total, at a 10% rate. Percentage change and share calculations are included.
Date Calculator
Count the days and the working days between two dates. Also works forwards: the date a number of days or working days from now.
Unit Converter
Convert length, weight, temperature, area, volume and data size between units. Metric and imperial side by side.
Password Generator
Pick a length and the character types you want, and get a password you can actually rely on. The strength is shown alongside, and look-alike characters can be left out.
Random Picker
Draw winners from a list of names or shuffle the whole list into a new order. There is also a number draw for a range you choose.
Table Converter
Turn a table copied out of a spreadsheet into Markdown, HTML, or CSV. Paste it and all three come out at once.
Dummy Text Generator
Produce filler text for checking a layout, in English, Korean, Japanese, Chinese, or Spanish. Take it by the word, the sentence, or the paragraph.
Markdown Preview
Write Markdown and see the rendered page as you type. The converted HTML can be copied out too.
QR Code Generator
Turn a link or a piece of text into a QR code. Choose the size and the colors, then save it as an image.
Image Resizer and Converter
Shrink an image and dial back the quality to cut its file size. It also converts between JPEG, PNG and WebP.