27 tools · no sign-up

The
small tools you reach for daily.

JSON, base64, timestamps, regex, colors, QR codes — 27 everyday utilities in one place. Open and use, no account, and your input never leaves the tab.

Browse all toolsPress / to search

Every tool is free to use, no login required.

Zero setup

Open and use — no sign-up, no install, no onboarding

Runs locally

Most tools compute in your browser; input is never uploaded

Free to use

No paywall and no need to disable ads — always usable

/27

{}LOCAL

JSON Formatter

Format, minify and validate JSON, with errors pinpointed to line and column.

FormattingJSONValidate

▦LOCAL

JSON ⇄ CSV

Convert object arrays to and from CSV — headers are the union of keys, nested values stay serialized, numbers restore losslessly.

FormattingJSONCSV

±LOCAL

JSON Diff

Compare two JSON documents structurally — key order is irrelevant, and object arrays can be matched by a primary key.

FormattingJSONDiff

🌳LOCAL

JSON Tree Viewer

Fold JSON into a navigable tree — jump by path, search by keyword, copy any path or value.

FormattingJSONTree

Y:LOCAL

YAML ⇄ JSON

Convert config files both ways while keeping anchors and structure.

FormattingYAMLJSON

<>LOCAL

XML Formatter & Entities

Indent or minify XML and encode/decode HTML entities, with mixed content preserved and errors pinned to line and column.

FormattingXMLEntities

JSXLOCAL

SVG to React Component

Turn design-tool SVG into a JSX component — camelized attributes, style objects, editor namespaces stripped.

FormattingSVGReact

</>LOCAL

JSON to Code

Generate TypeScript / Go / Rust / Zod types from JSON — nested objects, arrays and optional fields inferred.

FormattingTypeScriptGo

SQLLOCAL

SQL Formatter

Pretty-print or minify SQL with MySQL / PostgreSQL / SQLite dialect differences handled.

FormattingSQLMySQL

64LOCAL

Base64 Encode / Decode

Convert text to Base64 and back, including URL-safe variants and UTF-8.

EncodingBase64URL-safe

%LOCAL

URL Encode / Decode

encodeURIComponent both ways, plus a breakdown of query parameters.

EncodingURLQuery

#LOCAL

Hash Calculator

MD5 / SHA-1 / SHA-256 / SHA-512 locally, with HMAC support and long-text handling.

EncodingMD5SHA-256

JLOCAL

JWT Decoder

Decode header and payload locally, verify HS256-family signatures and detect expiry.

Web securityJWTHS256

TSLOCAL

Timestamp Converter

Unix seconds or milliseconds to date and back, with time zones, week numbers and relative time.

TimeUnixTimezone

*/5LOCAL

Cron Parser

Explain cron expressions in plain language, preview the next 5 runs and build them visually with time zones.

TimeCronScheduler

IDLOCAL

UUID / ULID Generator

Bulk-generate UUID v4, time-ordered UUID v7 and ULID, optionally without hyphens or uppercased.

GeneratorsUUID v4UUID v7

•••LOCAL

Password Generator

Generate strong passwords locally with adjustable length and character sets, plus entropy scoring.

GeneratorsPasswordRandom

.*LOCAL

Regex Tester

Highlight matches live, inspect capture groups and indices, and preview replacements.

TextRegExpGroups

AaLOCAL

Text Statistics

Characters, words, lines, paragraphs and estimated reading time in one pass.

TextWord countReading time

±LOCAL

Text Diff

Line-by-line comparison with added/removed highlighting and whitespace handling.

TextDiffCompare

◧LOCAL

Color Converter

Convert between HEX / RGB / HSL, generate tints and check WCAG contrast.

DesignHEXRGB

▦LOCAL

QR Code Generator

Generate QR codes locally with adjustable error correction, export PNG or vector SVG.

Web securityQR CodePNG

▶LOCAL

Video to Prompt

Decode a video locally, split it into shots with keyframes and palettes, and generate a bilingual prompt scaffold.

VideoVideoPrompt

cCLOCAL

Case Converter

Convert between camelCase, snake_case, kebab-case and more, plus URL slugs and placeholder text.

TextcamelCasesnake_case

/24LOCAL

IPv4 Subnet Calculator

Turn a CIDR into network and broadcast addresses, masks, usable host counts and a binary view.

Web securityCIDRNetmask

IPAPI

Request Info

Echo IP, region, user agent and runtime details for debugging and auth checks.

Web securityIPUA

乙LOCAL

BaZi Chart

Cast the four pillars, Ten Gods, element balance and luck pillars from a birth date — computed entirely in your browser, nothing leaves the device.

FortuneBaZiFour Pillars

Thesmall tools you reach for daily.