Tools

Free local-first tools for builders

Free local-first SEO and developer tools planned for formatting, decoding, conversion, debugging, and content workflows.

Initial tool catalog

The data layer is structured for dedicated tool pages with FAQs, how-to sections, related tools, metadata, and schema.

Developer Utilities Security Data Conversion SEO Utilities Content Tools

Developer Utilities

AI Coding hub Browser Automation hub

Developer Utilities

Available

JSON Formatter

Format, validate, and inspect JSON in the browser without sending data to a server.

json formatterjson validatorjson beautifier

Developer Utilities

Available

UUID Generator

Generate UUIDs locally for testing, mock data, scripts, and product workflows.

uuid generatorguid generatorrandom uuid

Developer Utilities

Available

Regex Tester

Test regular expressions against sample text with clear matches and common flags.

regex testerregular expression toolregex debugger

Developer Utilities

Available

Color Converter

Convert colors between HEX, RGB, and HSL formats for CSS, design systems, and frontend debugging.

color converterhex to rgbrgb to hsl

Developer Utilities

Available

QR Code Generator

Generate QR codes locally for URLs, landing pages, docs, events, and quick mobile testing.

qr code generatorqr code makerurl qr code

Developer Utilities

Available

Cron Expression Helper

Explain cron expressions and estimate upcoming run times for scheduled jobs.

cron expression helpercron parsercron schedule

Developer Utilities

Available

HTTP Status Code Lookup

Look up HTTP status codes, meanings, categories, and practical debugging notes.

http status codestatus code lookuphttp response codes

Developer Utilities

Available

User Agent Parser

Parse browser, operating system, device type, and rendering engine signals from user agent strings.

user agent parserbrowser parserdevice detector

Security

Compliance hub MCP hub

Security

Available

JWT Decoder

Decode JWT headers and payloads locally to debug auth flows without exposing tokens.

jwt decodertoken decoderjwt debugger

Security

Available

Hash Generator

Generate SHA hashes for text values, checksums, examples, fixtures, and debugging workflows.

hash generatorsha256 generatorchecksum tool

Security

Available

Password Generator

Generate strong random passwords locally with configurable length and character sets.

password generatorrandom passwordsecure password

Data Conversion

MCP hub AI Coding hub

Data Conversion

Available

Base64 Tool

Encode and decode Base64 text locally for quick debugging and data conversion.

base64 encoderbase64 decoderbase64 converter

Data Conversion

Available

Timestamp Converter

Convert Unix timestamps to readable dates and compare time zones for logs and APIs.

timestamp converterunix time converterepoch converter

Data Conversion

Available

URL Encoder/Decoder

Encode and decode URL components for query strings, redirects, tracking links, and API debugging.

url encoderurl decoderpercent encoding

Data Conversion

Available

HTML Entity Encoder/Decoder

Encode and decode HTML entities for snippets, docs, templates, and safe text rendering.

html entity encoderhtml entity decoderhtml escape

Data Conversion

Available

CSV to JSON Converter

Convert CSV rows into JSON arrays for fixtures, imports, examples, and data cleanup.

csv to jsoncsv converterjson converter

Data Conversion

Available

JSON to CSV Converter

Convert JSON arrays into CSV text for spreadsheets, exports, fixtures, and content workflows.

json to csvjson convertercsv export

Data Conversion

Available

CSV Formatter

Format, normalize, and inspect CSV data for imports, exports, examples, and spreadsheet cleanup.

csv formattercsv cleanercsv validator

Data Conversion

Available

XML Formatter

Format XML markup with indentation and basic validation for feeds, config files, and examples.

xml formatterxml beautifierxml validator

SEO Utilities

Browser Automation hub AI Coding hub

SEO Utilities

Available

Slug Generator

Create clean URL slugs for blog posts, docs, landing pages, and programmatic SEO.

slug generatorurl slugseo slug tool

SEO Utilities

Available

Robots.txt Tester

Test robots.txt allow and disallow rules against URL paths and crawler user agents.

robots.txt testerrobots checkerseo crawler rules

SEO Utilities

Available

Meta Tag Previewer

Preview title tags and meta descriptions for search snippets before publishing SEO pages.

meta tag previewerserp previewtitle tag checker

SEO Utilities

Available

Open Graph Previewer

Preview Open Graph title, description, URL, and image metadata for social sharing cards.

open graph previewerog tagssocial preview

SEO Utilities

Available

Schema Markup Generator

Generate JSON-LD schema snippets for common SEO page types and utility pages.

schema generatorjson-ld generatorstructured data tool

SEO Utilities

Available

UTM Builder

Build campaign URLs with UTM parameters for analytics, launches, newsletters, and paid links.

utm buildercampaign url builderutm generator

Content Tools

AI Coding hub Compliance hub

Content Tools

Available

Markdown Previewer

Preview Markdown content for docs, changelogs, templates, and publishing workflows.

markdown previewermarkdown editormarkdown tool

Content Tools

Available

Word Counter

Count words, sentences, paragraphs, reading time, and keyword frequency for content drafts.

word counterreading time calculatorcontent counter

Content Tools

Available

Character Counter

Count characters, bytes, lines, and whitespace for titles, descriptions, snippets, and inputs.

character countertext length checkerbyte counter

Content Tools

Available

Case Converter

Convert text between uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, and kebab-case.

case convertertitle case convertercamelcase converter

Content Tools

Available

Text Diff Checker

Compare two text blocks line by line to find additions, removals, and unchanged content.

text diff checkerdiff toolcompare text