A little order. A lot of clarity.
Give structured data room to make sense.
JSON Formatter 400+ PRIVATE TOOLS · WEBMCP BROWSER AI PROTOCOL · 26 STATIONS
Less friction.
More building.
Format, convert, generate, and inspect across 400+ private developer utilities across 26 stations. Featuring native WebMCP (document.modelContext) for in-page AI agent execution with 100% client-side privacy.
Search the registry or browse a station below.
Paste anything to detect format
Quick access
Browse all toolsJSON Formatter
Format JSON with readable two-space indentation in your browser.
JSON Validator
Check JSON syntax and locate invalid input locally.
JSON Minifier
Remove insignificant JSON whitespace without changing its structure.
JSON to YAML
Convert JSON into readable YAML locally.
JSON to CSV
Convert a JSON array of records into quoted CSV text.
JSON Schema Generator
Infer a starting JSON Schema from a representative JSON sample.
SMALL TOOLS, USEFUL POSSIBILITIES
A few things you can do here Make room for the work.
Same image. New format.
Move from PNG to WebP, right in your browser.
PNG to WebPFind your expression.
Translate colors between HEX, RGB, and HSL.
Color ConverterTHE STATION INDEX
Choose a station
Different tasks.
A place for each.
JSON & Data
Format, validate, compare, transform, and inspect structured data locally in your browser.
46 available toolsEncoding
Encode, decode, inspect, and transform text and byte representations locally.
35 available toolsSecurity
Generate, hash, compare, and inspect security values locally with browser cryptography.
22 available toolsRegex
Test, inspect, build, and transform regular expressions locally in your browser.
9 available toolsDate & Time
Convert, compare, format, and inspect dates, times, timestamps, and timezones locally.
17 available toolsText
Count, transform, generate, compare, and inspect text locally in your browser.
31 available toolsCron
Generate, explain and validate cron schedules, convert supported human descriptions, and calculate the next occurrence locally.
6 available toolsSQL & Database
Format, validate, generate, inspect, and convert SQL and database structures locally without connecting to your database.
17 available toolsWeb
Inspect, generate, and transform common web URLs, metadata, headers, manifests, and browser-facing configuration locally.
21 available toolsAPI
Build, convert, format, inspect, and test common HTTP, REST, and GraphQL requests without unnecessary server-side processing.
16 available toolsImage
Convert, resize, compress, inspect, and transform images locally in your browser.
28 available toolsSpreadsheet
View, inspect, clean, convert, and transform spreadsheet data locally in your browser.
21 available toolsMarkdown
Format, preview, convert, inspect, and generate Markdown locally.
18 available toolsColor & CSS
Convert colors, check text contrast, and generate editable CSS visuals locally in your browser.
7 available toolsConverters
Discover canonical browser-local conversion tools by format family, without duplicating their owning stations.
56 available toolsMerge, split, rotate, convert, sign, and inspect PDF documents locally in your browser with zero server uploads.
9 available toolsQR & Barcode
Generate and scan custom QR codes and standard linear barcodes locally in your browser.
3 available toolsAudio
Trim, cut, inspect, and process audio waveforms locally in your browser with zero server uploads.
1 available toolsCode Generation
Generate TypeScript types, Zod schemas, Go structs, Python Pydantic models, Rust Serde structs, and React JSX components locally.
8 available toolsNetwork & DevOps
Calculate CIDR subnets, convert IPv4/IPv6, decode SSL certificates, generate Dockerfiles, and compose configurations locally.
8 available toolsFrontend & CSS
Build and preview CSS Grid, Flexbox layouts, keyframe animations, glassmorphism, clip-paths, and custom scrollbars visually.
6 available toolsDeveloper Math
Inspect IEEE-754 floats, test bitwise operators, compute arbitrary-precision BigInts, and perform matrix operations locally.
7 available toolsCompression
Inspect, extract, create, and compress ZIP, TAR, Gzip, and Deflate archives locally in your browser with zero server uploads.
5 available toolsWebPKI & Advanced Cryptography
Generate RSA keys, perform AES-GCM encryption, inspect CSR requests, sign and verify JWTs, and build CSP headers locally using Web Crypto.
5 available toolsAI & Prompt Engineering
Count tokens across LLM models, repair malformed JSON, interpolate prompts, calculate vector similarity, and build system prompts client-side.
5 available toolsPolicy Generators
Generate customized, compliant Privacy Policies, Terms & Conditions, Cookie Policies, Disclaimers, and Refund Policies in text, markdown, and HTML locally.
5 available toolsHardware & IoTPending — not yet available or included in counts.
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A CLEAR BOUNDARY
Know what each tool does.
Most utilities calculate or transform data in the browser. A small number of tools have documented exceptions, such as the explicit API Request Tester or browser requests caused by remote images in Markdown previews. Read each station’s limitations before relying on output.