SuitedDeadly Simple Utility Gallery

Utilities

Word Count Calculator

Unicode Inspector

Case Converter

Slug Generator

Text Diff Compare

CSV Table Diff

Regex Find & Replace

JSON Formatter & Validator

JSON Lines Inspector

YAML ↔ JSON Converter

OpenAPI Contract Inspector

Schema.org JSON-LD Inspector

Analytics Event Taxonomy Auditor

.env File Inspector

Markdown Table Builder

CSV to JSON

CSV Column Profiler

URL Encode & Decode

CURL Convert

Query String Builder

UTM URL Builder

HTTP Header Inspector

Cache-Control Header Builder

CORS Policy Simulator

IP/CIDR Calculator

DNS Record Inspector

HAR File Inspector

Email Header Inspector

Base64 Encode & Decode

HTML Entity Converter

Password Generator

Hash Generator

Webhook Signature Verifier

OAuth PKCE Inspector

UUID Generator & Validator

JWT Debugger

CSP Policy Analyzer

Unix Timestamp

Cron Expression Builder

iCalendar Event Builder

Image Format Converter

Image Merger

Image Compressor

SVG Optimizer & Inspector

Color Contrast Checker

Color Palette Extractor

Favicon Generator

PWA Icon Generator

PWA Manifest Generator

Meta Tag Generator

Robots.txt Tester

XML Sitemap Builder

RSS/Atom Feed Inspector

Open Graph Image Generator

Social Image Resizer

iOS App Icon Generator

iOS Splash Screen Generator

Android App Icon Generator

Android Adaptive Icon Generator

Mermaid Live Editor

Percentage Calculator

Loan Payment & Amortization Calculator

Compound Interest Calculator

Savings Goal Calculator

Discount, Tax & Tip Calculator

Margin & Markup Calculator

Break-even Calculator

Salary & Hourly Pay Calculator

Unit Converter

Cooking Measurement Converter

Fuel Economy & Trip Cost Calculator

Running Pace Calculator

Weighted Grade & Final Exam Calculator

GPA & Target GPA Calculator

Study Time Planner

Loading page

Please wait while the page loads.

Deadly Simple Utility Gallery

Suited

Use focused browser utilities to count words, compare text, convert case, generate slugs, test regex replacements, encode strings, convert timestamps, merge images, compress images, and inspect cURL conversions.

Utility groups

15

Writing & Text

4 focused tools

Word Count CalculatorCount words, characters, and byte size for any text.
Unicode InspectorInspect code points, hidden characters, normalization changes, and escaped text.
Case ConverterConvert text between common letter case styles in real time.
Slug GeneratorGenerate clean URL slugs from free-form text.

Compare & Match

3 focused tools

Text Diff CompareCompare two text blocks and inspect changed lines.
CSV Table DiffCompare two CSV tables by key column and inspect added, removed, changed, and unchanged rows.
Regex Find & ReplaceFind matches with JavaScript regular expressions and preview replacements.

Structured Data

10 focused tools

JSON Formatter & ValidatorFormat, validate, and transform JSON documents in the browser.
JSON Lines InspectorInspect JSONL records for parse errors, object coverage, key presence, and mixed value types.
YAML ↔ JSON ConverterConvert YAML and JSON in both directions with formatting controls.
OpenAPI Contract InspectorInspect OpenAPI contracts for endpoint, schema, security, and response gaps.
Schema.org JSON-LD InspectorInspect Schema.org JSON-LD entities, required fields, URLs, and graph health.
Analytics Event Taxonomy AuditorAudit tracking plans against sample analytics events for drift, types, owners, and PII.
.env File InspectorInspect .env files for duplicate keys, invalid names, empty values, and secret-like entries.
Markdown Table BuilderBuild and export Markdown tables with alignment and header controls.
CSV to JSONConvert CSV text into JSON with delimiter and header controls.
CSV Column ProfilerProfile CSV columns for missing values, uniqueness, inferred types, and row-shape issues.

Web & URLs

7 focused tools

URL Encode & DecodeEncode or decode URL-safe strings and query text.
CURL ConvertConvert pasted cURL commands into code for many output languages.
Query String BuilderParse, edit, and rebuild query strings with duplicate-key support.
UTM URL BuilderBuild campaign URLs with required UTM fields, custom parameters, and duplicate checks.
HTTP Header InspectorParse raw HTTP headers and review cookies, cache, CORS, and security posture.
Cache-Control Header BuilderBuild and audit Cache-Control headers with TTL, visibility, and conflict diagnostics.
CORS Policy SimulatorModel browser CORS requests and response headers to see whether access is allowed.

Network

4 focused tools

IP/CIDR CalculatorCalculate IP network ranges, host counts, subnets, and overlap diagnostics.
DNS Record InspectorInspect DNS record sets for conflicts, mail policy issues, and normalized output.
HAR File InspectorInspect saved browser HAR logs for request performance, transfer size, cache behavior, and diagnostics.
Email Header InspectorInspect raw email headers for Received hops, authentication results, and sender alignment.

Security & Encoding

9 focused tools

Base64 Encode & DecodeEncode text as Base64 or decode Base64 back to text.
HTML Entity ConverterEncode and decode common HTML entities with unknown-name and numeric code point diagnostics.
Password GeneratorGenerate browser-local passwords with configurable character sets and strength feedback.
Hash GeneratorGenerate multiple cryptographic hashes for text or file input.
Webhook Signature VerifierVerify GitHub, Stripe, and Slack webhook HMAC signatures against raw payloads.
OAuth PKCE InspectorInspect OAuth authorization URLs and verify PKCE challenge pairs locally.
UUID Generator & ValidatorGenerate browser-local UUID v4 or v7 values and validate pasted identifiers.
JWT DebuggerDecode, verify, and generate JWTs locally with detailed diagnostics and claims insight.
CSP Policy AnalyzerParse Content Security Policy directives and flag risky source rules.

Date & Time

3 focused tools

Unix TimestampConvert dates into Unix, ISO8601, and RFC822 formats.
Cron Expression BuilderBuild five-field cron schedules and preview upcoming UTC run times.
iCalendar Event BuilderGenerate .ics calendar events with timezone, attendees, recurrence, and reminders.

Images

4 focused tools

Image Format ConverterConvert a single image into PNG, JPG, or WEBP directly in the browser.
Image MergerCombine multiple images into a single output file.
Image CompressorCompress images locally by quality and size.
SVG Optimizer & InspectorOptimize pasted SVG markup and inspect structure, safety findings, and output size.

Design & Color

2 focused tools

Color Contrast CheckerCompare a foreground and background pair with live WCAG contrast guidance.
Color Palette ExtractorExtract dominant colors from uploaded images with adjustable sampling.

Web Metadata

9 focused tools

Favicon GeneratorGenerate classic browser favicon files, Apple touch icons, and HTML link tags.
PWA Icon GeneratorGenerate standard and maskable PWA icon PNG bundles for web app installs.
PWA Manifest GeneratorEdit web app manifest fields and export a valid manifest.json file.
Meta Tag GeneratorCreate SEO, Open Graph, and Twitter card tags for a page.
Robots.txt TesterTest crawler access against pasted robots.txt rules and inspect the winning rule.
XML Sitemap BuilderCreate sitemap.xml from URL rows and check dates, changefreq, and priority values.
RSS/Atom Feed InspectorInspect pasted RSS and Atom XML feeds for metadata, entries, dates, duplicate identifiers, and missing fields.
Open Graph Image GeneratorCompose a 1200x630 social preview image with text, color, and optional logo controls.
Social Image ResizerResize one source image into named preset bundles for major social platforms.

App Assets

4 focused tools

iOS App Icon GeneratorBuild an AppIcon.appiconset ZIP with Contents.json for iPhone, iPad, and App Store submission.
iOS Splash Screen GeneratorGenerate explicit iOS startup image sizes and the matching apple-touch-startup-image snippet.
Android App Icon GeneratorGenerate Android launcher mipmap assets and a Play Store icon package.
Android Adaptive Icon GeneratorGenerate adaptive icon XML and foreground or background assets for Android Studio.

Diagramming

1 focused tool

Mermaid Live EditorEdit Mermaid diagrams with live preview, shareable URLs, export actions, and local history.

Money & Business

8 focused tools

Percentage CalculatorCalculate percentages, changes, differences, and original values.
Loan Payment & Amortization CalculatorEstimate loan payments, interest, payoff time, and amortization.
Compound Interest CalculatorProject compound growth with recurring monthly contributions.
Savings Goal CalculatorPlan the monthly deposits needed to reach a savings goal.
Discount, Tax & Tip CalculatorApply sequential discounts, tax, tip, and bill splitting.
Margin & Markup CalculatorCalculate selling price, gross margin, markup, and profit.
Break-even CalculatorFind break-even sales volume and target-profit requirements.
Salary & Hourly Pay CalculatorConvert gross pay between hourly, weekly, monthly, and annual periods.

Measurement & Everyday

4 focused tools

Unit ConverterConvert length, mass, speed, and digital storage units.
Cooking Measurement ConverterConvert recipe volumes and estimate ingredient weights.
Fuel Economy & Trip Cost CalculatorConvert fuel economy and estimate trip fuel cost.
Running Pace CalculatorCalculate running pace, finish time, speed, and kilometer splits.

Education

3 focused tools

Weighted Grade & Final Exam CalculatorCalculate weighted grades and the score needed on a final exam.
GPA & Target GPA CalculatorCalculate credit-weighted GPA and plan for a cumulative target.
Study Time PlannerDistribute prioritized study tasks across available days.