Password Generator
Create a strong random password, passphrase or PIN, with its strength shown.
Utility Tools
Helpers that need no file: passwords, percentages, text, lists, dates, QR codes, units and colors; data, tables, links and regex; hashes, IDs, tokens and certificates.
Workspaces
Each holds several jobs; switch between them without leaving the page.
Everyday
- Passwords Make a password, passphrase or PIN, or check how strong one is. Generate · Check
- Percentages Percent of, change, discount, VAT and more, with exact decimals. % of · What % · Change · Discount · VAT · Increase or decrease · Before a change · Rule of three
- Text Count words, change case, clean up text and compare two versions. Count · Case · Clean · Find & replace · Compare
- Lists & Random Clean and sort lists, shuffle, pick a name or make teams. Clean · Sort · Shuffle · Pick one · Teams · Compare · Join or split
- Date & Time Days between dates, adding days, exact ages, time zones and Unix time. Between · Add or subtract · Age · Time zones · Unix time
- QR Codes Make QR codes for links, Wi-Fi and contacts, or read one from an image. Create · Read
- Units Length, weight, temperature, volume, data size and more, with exact factors. Length · Weight · Temperature · Volume · Data size · Area · Speed · Time
- Color Convert HEX, RGB, HSL and OKLCH, check contrast, make a palette, pick from an image. Convert · Contrast · Palette · Pick
Text, data and links
- Data Format and check JSON, read it as a tree, convert it to YAML. Format · Validate · Tree · Convert
- Encode Base64, URL encoding, HTML entities and Unicode escapes, both ways. Base64 · URL · HTML entities · Unicode · Hex
- Tables View CSV and TSV as a table, clean it and convert to JSON or Markdown. Preview · Convert · Clean
- URL & Links Split a link into its parts, edit its parameters, remove tracking, build UTM links. Parse · Query · Clean · UTM
- Regex Test JavaScript regular expressions, replace and extract matches. Test · Replace · Extract
Developer and security
- Hash & Checksum SHA-256 and more for text and files, compare a checksum, HMAC. Text · File · Compare · HMAC
- IDs & Random Tokens UUID v4 and v7, ULID, NanoID and random tokens; inspect a UUID. UUID · ULID · NanoID · Token · Inspect
- Tokens & Certificates Decode and verify JWTs, read certificates and CSRs, fingerprints. JWT · Verify · Certificate
All utilities
Passwords
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Password Strength Checker
Estimate how hard a password is to guess and see the patterns that weaken it.
Percentages
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Percentage Calculator
Work out percentages in plain sentences: X% of Y, X as a percent of Y and more.
Text
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Word Counter
Count words, characters, lines and paragraphs as you type.
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Case Converter
Change text to UPPERCASE, lowercase, Title Case or Sentence case.
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Text Compare
Compare two texts and see which lines and words were added or removed.
Lists & Random
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Remove Duplicate Lines
Remove repeated lines from a list, keeping the first of each.
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Sort Lines
Sort lines alphabetically or numerically, ascending or descending.
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Random Name Picker
Pick a random name or item from your list, fairly and on this device.
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Team Generator
Split a list of names into evenly sized random teams.
Data
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JSON Format, Validate and View
Format, minify, validate and explore JSON, and see exactly where it is invalid.
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JSON to YAML
Convert JSON to YAML for configuration files.
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YAML to JSON
Convert YAML to JSON, safely, with errors shown by line.
Encode
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Base64 Encode and Decode
Encode text to Base64 or decode it again, with full Unicode support.
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URL Encode and Decode
Percent-encode text for a URL, or decode an encoded URL.
Date & Time
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Timestamp Converter
Convert Unix timestamps to dates and back, in UTC and your time zone.
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Date Calculator
Add or subtract days, weeks, months or years from a date.
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Days Between Dates
Count the days, weeks or business days between two dates, or until one.
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Age Calculator
Work out an exact age in years, months and days, on today or any date.
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Time Zone Converter
Convert a date and time from one time zone to another, with daylight saving shown.
QR Codes
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QR Code Generator
Create QR codes for links, text, email, phone, SMS and Wi-Fi, as PNG or SVG.
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QR Code Reader
Read a QR code from a photo or screenshot; links never open on their own.
Units
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Unit Converter
Convert length, weight, temperature, volume, data size and more.
Tables
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JSON to CSV
Turn a JSON array of objects into a CSV table for Excel or Google Sheets.
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CSV to JSON
Turn CSV with a header row into a JSON array of objects.
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CSV Viewer
Open a CSV or TSV file as a table, clean it up and convert it.
Color
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Color Converter
Convert a color between HEX, RGB, HSL, HWB and OKLCH, with its alpha.
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Contrast Checker
Check the contrast of a text color on its background against WCAG 2 levels.
URL & Links
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URL Parser
Split a link into its parts and edit its query parameters, without opening it.
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Remove Tracking Parameters
Remove utm, fbclid, gclid and other tracking parameters from a link.
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UTM Builder
Add utm_source, utm_medium and utm_campaign to a link for campaign tracking.
Regex
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Regex Tester
Test a JavaScript regular expression, see its matches and groups, replace and extract.
Hash & Checksum
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Hash Generator
Create SHA-256, SHA-384 or SHA-512 hashes of text or a local file, and compare them.
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File Checksum
Check that a downloaded file matches its published SHA-256, SHA-1 or MD5 checksum.
IDs & Tokens
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UUID Generator
Generate random version 4 or time-ordered version 7 UUIDs from your browser’s secure random generator.
Tokens & Certificates
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JWT Decoder
Read a JSON Web Token’s header and claims, and verify it with your key.
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Certificate Decoder
Read an X.509 certificate or CSR: subject, issuer, dates, SANs and fingerprint.