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How to decode JWT locallyDecode JWT headers and payloads in the browser while keeping verification, claims, and sensitive token handling clear.Securityjwt_decoderjwt_workbench Validate JSON before API requestsA checklist for validating request payloads before replaying or sharing them.JSONjson_formatterjson_schema_workbench JSON Schema validation checklistReview schema coverage, required fields, and compatibility before implementation.JSONjson_schema_workbenchjson_formatter OpenAPI debugging workflow checklistConnect request, schema, mock, and documentation checks into one review.APIopenapi_vieweropenapi_mock JWT security best practicesAvoid common JWT handling mistakes when reviewing decoded or verified tokens.Securityjwt_decoderjwt_workbench Image privacy and redactionRemove sensitive regions before image assets leave the original context.Imageimage_privacy_workbenchphoto_censor

Data & Code Formats

Format, inspect, and convert JSON, YAML, XML, CSV, schemas, and code-oriented data formats.

JSON, YAML, CSV, and data formatsBrowser-localOffline capable

JSON Formatter

Format, validate, and minify JSON payloads instantly.

Formatters and validatorsBrowser-localOffline capable

XML Formatter

Format, validate, and minify XML payloads instantly.

Formatters and validatorsBrowser-localOffline capable

SQL Formatter

Format and beautify SQL queries for various dialects.

Formatters and validatorsBrowser-localOffline capable

JavaScript Formatter

Format and beautify JavaScript code with consistent indentation and readable output.

Formatters and validatorsBrowser-localOffline capable

JavaScript Minifier

Minify JavaScript code by removing whitespace, comments, and redundant bytes.

Formatters and validatorsBrowser-localOffline capable

HTML Minifier

Minify HTML by removing comments and unnecessary whitespace.

6 / 23 tools

HTML/CSS Beautifier HTML Formatter JSON/YAML/TOML Converter JSON → TypeScript CSS Minifier JSONPath Playground JSON Diff Viewer CSV ↔ JSON Converter NDJSON Formatter CSV Diff jq Playground YAML Merge/Patch Explorer yq Playground Structured Data Visualizer JSON Schema Workbench OpenAPI Diff MessagePack Inspector

Encoding & Crypto

Encode, decode, hash, inspect tokens, and work with certificate and key material locally.

HTML Encoder/Decoder

Encode or decode HTML entities instantly in your browser.

Base64 Encode/Decode

Encode text to Base64 format or decode it back to a readable string.

Base32/Base58 Converter

Encode and decode Base32 and Base58 text locally without uploading data.

Security, tokens, and certificatesBrowser-localOffline capable

URL Encode/Decode

Encode text for safe URL transmission or decode it back to readable string.

JWT Decoder

Decode JSON Web Tokens instantly. Never sends your token to any server.

Security, tokens, and certificatesBrowser-localOffline capable

JWT Workbench

Encode, decode, and verify JWT tokens in one local-first workspace.

6 / 19 tools

Hash Generator MD5 Generator Image ↔ Base64 Certificate Decoder JWT Signature Verifier CSP Parser & Analyzer Security Header Analyzer TOTP/HOTP Generator Gzip/Brotli Lab SAML Decoder ASN.1/DER Inspector Hex/Bytes Workbench Public Key JWK Helper

Web, API & Network

Build, inspect, and debug HTTP, OpenAPI, URLs, user agents, headers, robots rules, and network data.

OpenAPI Viewer

Paste an OpenAPI/Swagger JSON spec to visualize your API endpoints.

User-Agent Parser

Decode raw User-Agent strings to identify browser, engine, OS, CPU, and device details.

HTTP Status Codes

Searchable reference for all HTTP status codes with descriptions.

CIDR / Subnet Calculator

Calculate network, broadcast, host ranges, and masks from IPv4 CIDR blocks.

URL Parser & Query Editor

Parse URLs into components and interactively edit query parameters.

cURL to Code Robots.txt Tester Header Diff OpenAPI Mock Playground HAR Viewer / Sanitizer GraphQL Workbench SEO Metadata Workbench DevOps YAML Validator

HTTP Request Builder

Build HTTP requests visually and generate cURL, JavaScript fetch, or Python code.

6 / 14 tools

DevOps & Logs

Parse environment files, scrub logs, inspect HAR files, build cron expressions, and prepare operations snippets.

Env Variable Parser

Parse .env files, validate variables, and export to JSON, YAML, or Docker args.

Crontab Generator

Build, parse, and understand cron schedules easily.

Cron Schedule Visualizer

Visualize the next execution times for any cron expression.

Chmod Calculator

Interactive Unix file permission calculator. Toggle permissions or enter octal directly.

Docker Run to Compose

Convert docker run commands into docker-compose.yml service definitions.

Log Scrubber Pipeline Builder

Local Log Parser

Parse and analyze logs locally. Supports JSON Lines, plain text, and common log formats.

6 / 8 tools

Text & Regex

Clean, compare, count, transform, and test text, Unicode, slugs, regular expressions, and markdown content.

Markdown Preview

Live split-pane Markdown editor with GFM support.

HTML to Markdown

Convert HTML snippets into clean Markdown instantly in your browser.

Text Diff Checker

Compare two pieces of text side-by-side. Highlights additions, deletions, and modifications instantly.

Multiple Whitespace Remover

Remove repeated spaces, tabs, and line breaks in one click.

Letter Counter

Count characters, letters, words, and lines instantly.

Regex Tester Regex Generator Slugify & Case Converter Invisible Characters Detector Unicode Inspector OAuth PKCE and JWKS Workbench

Bionic Reading Converter

Transform plain text into bionic-reading style output for faster scanning and focus.

6 / 12 tools

Images, SVG & CSS

Edit images, extract colors, optimize SVG, generate CSS visuals, and create local design assets.

SVG and CSS visual toolsBrowser-localOffline capable

SVG Optimizer

Optimize SVG files by removing metadata, comments, and redundant attributes.

SVG and CSS visual toolsBrowser-localOffline capable

Google Fonts Pair Finder

Find high-contrast, production-friendly font pairings and copy the CSS import snippet instantly.

Images and mediaBrowser-localOffline capable

Text to Handwriting Converter

Render typed text as handwriting-style images with downloadable PNG output.

Images and mediaBrowser-localOffline capable

Code to Image Converter

Convert code snippets into downloadable PNG images.

SVG and CSS visual toolsBrowser-localOffline capable

Color Converter

Instantly convert HEX, RGB, HSL, and CMYK color codes.

SVG and CSS visual toolsBrowser-localOffline capable

React Native Shadow Generator

Tune iOS shadow props and Android elevation with a live preview and copy-ready StyleSheet output.

Generators & Calculators

Generate IDs, passwords, timestamps, QR codes, barcodes, random lists, and test data.

GeneratorsBrowser-localOffline capable

Fake IBAN Generator List Randomizer ASCII Art Generator ID Generator Image Privacy Workbench

Social & Metadata

Create open graph metadata, social previews, thumbnails, and share-ready social media assets.