Tools for Operations

223 hand-picked tools for Operations. Free, private, browser-based.

Add Days to Date Calculator

Add or subtract days, weeks, months, and years from any date — plus a business-day mode that skips weekends. Runs entirely in your browser.
AI Eval Planner

Generate eval cases, pass criteria, and edge cases from an AI feature, risks, and user path.
awk + sed Cheatsheet

awk + sed cheat sheet — 80+ one-liners for text processing, with real examples and common pitfalls.
AWS CLI Cheatsheet

AWS CLI cheat sheet — 80+ commands for EC2 / S3 / IAM / Lambda / RDS / EKS / CloudFormation with real examples.
Base64 Block Deduplicator

Find duplicates and keep one clean copy of base64 blocks from pasted text or uploaded local files.
Base64 Block Extractor

Extract, dedupe, and export base64 blocks from pasted text or uploaded local files.
Base64 Block List Converter

Convert base64 blocks from pasted text or uploaded local files.
Base64 Block List Validator

Validate and explain issues in base64 blocks from pasted text or uploaded local files.
Base64 Block Normalizer

Normalize, sort, and prepare base64 blocks from pasted text or uploaded local files.
Base64 to File Converter

Paste raw Base64 or a data URL, decode it locally, inspect bytes, and download the reconstructed file.
Bash Cheatsheet

Bash cheat sheet — 100+ commands & idioms for variables, conditionals, loops, functions, pipes, traps, with real one-liners.
Batch File Rename Planner

Upload a batch, generate safe new filenames with sequence numbers and case rules, then export a CSV plan.
Bcrypt Generator

bcrypt password hash generator + verifier — pick rounds, hash and compare in browser.
Board Foot Calculator

Thickness × width × length ÷ 12 = board feet — multi-row cut list, per-BF cost, imperial ⇄ m³ — browser-only
Air Conditioner BTU Calculator

Room area × ceiling × orientation × people → cooling BTU/h, 匹 (horsepower) and kW — sizes an AC right the first time — browser-only.
Caffeine Calculator

Track how much caffeine is still in your system, how much is left at bedtime, and when it drops to a sleep-friendly level — half-life model, browser-only.
Carpet Calculator

Rooms + roll width + waste → linear metres, billed area (m² / ft² / sq yard) and cost — browser-only
Concrete Calculator

Slab, column, round footing & stairs → cubic meters/yards + cement bags, sand and gravel — browser-only
Content Refresh Checklist

Generate a prioritized content refresh checklist from URL, topic, and performance signals.
Cooking Measurement Converter

Cups, spoons, grams, millilitres — and the part that matters, volume ↔ weight by ingredient density, all in your browser
Credit Card Number Deduplicator

Find duplicates and keep one clean copy of credit card numbers from pasted text or uploaded local files.
Credit Card Number Extractor

Extract, dedupe, and export credit card numbers from pasted text or uploaded local files.
Credit Card Number List Converter

Convert credit card numbers from pasted text or uploaded local files.
Credit Card Number List Validator

Validate and explain issues in credit card numbers from pasted text or uploaded local files.
Credit Card Number Normalizer

Normalize, sort, and prepare credit card numbers from pasted text or uploaded local files.
Cron Expression Explainer — Decode Any Cron + Next 20 Runs

Cron expression explainer — paste any cron, get plain English/Chinese + next 20 runs + visual time grid.
Crontab Helper — Visual Builder & Explainer

Visual crontab builder + human-readable explanation + next run preview.
CSP Policy Auditor

Inspect Content-Security-Policy directives for unsafe sources, missing fallbacks, framing gaps, object-src, base-uri, and reporting coverage.
CSS Minifier

Minify CSS — strip comments, whitespace, shorten colors, merge selectors. 30-60% smaller.
CSV Column Extractor

Upload or paste CSV, keep only selected columns by name or index, and export a smaller privacy-safe file.
CSV Data Quality Profiler

Upload CSV or TSV and profile missing values, inferred types, invalid cells, duplicate rows, whitespace issues, top values, and numeric outliers.
CSV Deduplicator

Remove duplicate CSV rows by full row or selected key columns from uploaded files, locally and safely.
CSV Filter

Filter uploaded CSV rows by column value using contains, equals, or regex, with local browser processing.
CSV Header Normalizer

Standardize CSV header rows to snake_case, kebab-case, camelCase, or Title Case before imports and scripts.
CSV Sorter

Sort uploaded CSV rows by a selected column with numeric-aware ordering and local-only processing.
CSV Stats Summary

Upload CSV and get a quick Markdown profile of filled, missing, unique, numeric, min, max, and average values.
CSV ⇄ JSON Converter

Convert CSV to JSON or JSON to CSV — handles quoted commas, newlines in cells, custom delimiter — browser-only
CSV to Markdown Table

Convert uploaded or pasted CSV into clean Markdown tables with quoted-cell support, locally in the browser.
CSV to TSV Converter

Convert CSV files to tab-separated values while preserving quoted commas, quotes, and multiline cells locally.
CSV to YAML Converter

Turn a spreadsheet export into a clean YAML array of objects — RFC 4180 quoting, optional type inference, browser-only
CSV Transposer

Flip CSV rows and columns from uploaded files or pasted data, with ragged-row handling and local output.
curl Cheatsheet

curl cheat sheet — 80+ curl commands for GET/POST/auth/upload/download/SSL/proxy, with real examples and pitfalls.
Data Storage Converter

Convert bytes, KB, MB, GB, TB and bits — decimal (1000) and binary (1024, KiB/MiB/GiB) side by side, with the hard-drive 931 GiB gotcha explained — browser-only
Date Difference Calculator

Days / weeks / months / years between two dates — plus business-days mode — browser-only
Days Until Date Calculator

How many days until a date — plus weeks, months, business days, exact remaining, and the weekday it lands on
Dilution Calculator

Solve C1V1 = C2V2 and ratio dilutions (1:10) — stock + water amounts in mL / L / fl oz / gal — browser-only
DNS Record Explainer

DNS record explainer — all 18 common record types (A, AAAA, CNAME, MX, TXT, SRV, etc.) with syntax, examples, and gotchas.
Docker Cheatsheet

Docker command cheat sheet — 80+ commands with real examples, common mistakes, and Compose section.
Domain Name Deduplicator

Find duplicates and keep one clean copy of domain names from pasted text or uploaded local files.
Domain Name Extractor

Extract, dedupe, and export domain names from pasted text or uploaded local files.
Domain Name List Converter

Convert domain names from pasted text or uploaded local files.
Domain Name List Validator

Validate and explain issues in domain names from pasted text or uploaded local files.
Domain Name Normalizer

Normalize, sort, and prepare domain names from pasted text or uploaded local files.
Drywall Calculator

Wall + ceiling area → sheets, drywall screws, joint tape & compound — metric and imperial — browser-only
Duplicate File Finder

Upload a batch and find exact duplicate files by SHA hash locally, with a Markdown cleanup report.
Elasticsearch Cheatsheet

Elasticsearch cheat sheet — 80+ Query DSL, mapping, analyzer, aggregation, replication, with real examples.
Email Address Deduplicator

Find duplicates and keep one clean copy of email addresses from pasted text or uploaded local files.
Email Address Extractor

Extract, dedupe, and export email addresses from pasted text or uploaded local files.
Email Address List Converter

Convert email addresses from pasted text or uploaded local files.
Email Address List Validator

Validate and explain issues in email addresses from pasted text or uploaded local files.
Email Address Normalizer

Normalize, sort, and prepare email addresses from pasted text or uploaded local files.
Email Validator

Validate emails — RFC 5321 syntax + bulk paste + disposable detection + MX hint.
ENV Secret Scanner

Scan .env files, config snippets, and CI logs locally for likely API keys, tokens, private keys, JWTs, and database URLs.
Environment Variable Deduplicator

Find duplicates and keep one clean copy of environment variables from pasted text or uploaded local files.
Environment Variable Extractor

Extract, dedupe, and export environment variables from pasted text or uploaded local files.
Environment Variable List Converter

Convert environment variables from pasted text or uploaded local files.
Environment Variable List Validator

Validate and explain issues in environment variables from pasted text or uploaded local files.
Environment Variable Normalizer

Normalize, sort, and prepare environment variables from pasted text or uploaded local files.
EV Charging Cost Calculator

Battery kWh + charge % + tariff → cost per charge, per 100km/mile, and how much you save vs petrol — browser-only
Fence Calculator

Total run + post spacing → posts, panels/pickets, rails, concrete bags — metric & imperial — browser-only
File Checksum Compare

Paste an expected checksum, upload a file, and verify SHA digest matches locally before installing or sharing.
File Hash Calculator

Compute SHA-1, SHA-256, SHA-384, or SHA-512 hashes for uploaded files entirely in the browser.
File MIME Type Inspector

Upload files and inspect filename, size, browser MIME type, extension, and magic-byte signature locally.
File to Base64 Converter

Upload a small file and convert it to raw Base64 or a data URL locally for embeds, fixtures, and tests.
Filename Sanitizer

Strip illegal characters and make any string a safe cross-platform filename, in your browser
Flooring Calculator

Room sizes + flooring type + box coverage + waste → net area, boxes, planks, and cost — metric or imperial, browser-only.
Font File Inspector

Upload TTF or OTF files and extract family names, PostScript names, version, units per em, glyph count, and table list.
Freelance Hourly Rate Calculator

Back into the hourly rate you must charge from your target salary, business expenses, billable hours, profit margin, and taxes — browser-only
Gear Ratio Calculator

Gear & transmission ratio plus bicycle gear inches, development and speed from cadence — exact, browser-only
Git Cheatsheet

Git command cheat sheet — searchable, with explanations, common mistakes, and real examples.
Grass Seed Calculator

Lawn area + species + new/overseed → exact seed weight and bag count — metric & US — browser-only
Gravel Calculator

Area + depth → volume, tonnes, bulk bags — driveways, drainage, paths — browser-only
HAR Performance Analyzer

Upload a Chrome DevTools HAR file and get a local performance, cache, host, asset, status, and security-header report.
Hashtag Deduplicator

Find duplicates and keep one clean copy of hashtags from pasted text or uploaded local files.
Hashtag Extractor

Extract, dedupe, and export hashtags from pasted text or uploaded local files.
Hashtag List Converter

Convert hashtags from pasted text or uploaded local files.
Hashtag List Validator

Validate and explain issues in hashtags from pasted text or uploaded local files.
Hashtag Normalizer

Normalize, sort, and prepare hashtags from pasted text or uploaded local files.
Heat Index Calculator

Air temperature + humidity to the real "feels-like" temperature, with NWS risk level — exact Rothfusz regression, browser-only
.htaccess Generator

Generate Apache .htaccess — HTTPS redirect, www toggle, gzip, cache headers, hotlink protection.
HTML Link Extractor

Upload HTML and extract anchors, images, scripts, stylesheets, canonicals, and meta URLs into CSV locally.
HTML Minifier

Minify HTML — strip comments, whitespace, optional attributes, inline CSS/JS. 40-60% smaller.
HTTP Header Deduplicator

Find duplicates and keep one clean copy of http headers from pasted text or uploaded local files.
HTTP Header Extractor

Extract, dedupe, and export http headers from pasted text or uploaded local files.
HTTP Header List Converter

Convert http headers from pasted text or uploaded local files.
HTTP Header List Validator

Validate and explain issues in http headers from pasted text or uploaded local files.
HTTP Header Normalizer

Normalize, sort, and prepare http headers from pasted text or uploaded local files.
HTTP Security Header Auditor

Audit raw response headers for HSTS, CSP, cookie flags, MIME sniffing, clickjacking, referrer, and permissions policy gaps.
HTTP Status Code Explorer

HTTP status code explorer — all 70+ codes with meaning, common causes, real examples, and what to check.
Image EXIF Privacy Scanner

Scan uploaded images for EXIF, GPS, camera, software, dates, XMP, and ICC privacy indicators.
Image Metadata Inspector

Inspect PNG, JPEG, GIF, WebP, and SVG dimensions, bit depth, ICC, EXIF, XMP, animation, and notes.
INI Formatter & Validator

Format and validate INI / TOML-like config — sort sections, align equal signs.
IPv4 Address Deduplicator

Find duplicates and keep one clean copy of ipv4 addresses from pasted text or uploaded local files.
IPv4 Address Extractor

Extract, dedupe, and export ipv4 addresses from pasted text or uploaded local files.
IPv4 Address List Converter

Convert ipv4 addresses from pasted text or uploaded local files.
IPv4 Address List Validator

Validate and explain issues in ipv4 addresses from pasted text or uploaded local files.
IPv4 Address Normalizer

Normalize, sort, and prepare ipv4 addresses from pasted text or uploaded local files.
IPv6 Address Deduplicator

Find duplicates and keep one clean copy of ipv6 addresses from pasted text or uploaded local files.
IPv6 Address Extractor

Extract, dedupe, and export ipv6 addresses from pasted text or uploaded local files.
IPv6 Address List Converter

Convert ipv6 addresses from pasted text or uploaded local files.
IPv6 Address List Validator

Validate and explain issues in ipv6 addresses from pasted text or uploaded local files.
IPv6 Address Normalizer

Normalize, sort, and prepare ipv6 addresses from pasted text or uploaded local files.
ISO Date Deduplicator

Find duplicates and keep one clean copy of iso dates from pasted text or uploaded local files.
ISO Date Extractor

Extract, dedupe, and export iso dates from pasted text or uploaded local files.
ISO Date List Converter

Convert iso dates from pasted text or uploaded local files.
ISO Date List Validator

Validate and explain issues in iso dates from pasted text or uploaded local files.
ISO Date Normalizer

Normalize, sort, and prepare iso dates from pasted text or uploaded local files.
Jet Lag Calculator

Estimate how many days jet lag will last and build a day-by-day plan to pre-shift your body clock before you fly — eastbound vs westbound, light and melatonin timing, all in your browser
JS Minifier

Minify JavaScript — strip comments, whitespace, optional name shortening. 40-70% smaller.
JS Obfuscator

Lightly obfuscate JavaScript in the browser: strip comments, remove debugger/console calls, and optionally wrap strings with base64.
JSON Lines Formatter

Validate JSONL line by line, pretty-print it, convert to a JSON array, or export a CSV-like table locally.
JSON Minifier

Minify JSON into a compact single line, optionally sort object keys, and keep everything local.
JSON Schema Inferencer

Paste JSON or NDJSON samples and infer a Draft 2020-12 style schema with types, required fields, formats, enums, and examples.
JWT Decoder

Decode JWT header / payload / signature — verify structure, check exp, copy claims — browser-only
JWT Token Deduplicator

Find duplicates and keep one clean copy of jwt tokens from pasted text or uploaded local files.
JWT Token Extractor

Extract, dedupe, and export jwt tokens from pasted text or uploaded local files.
JWT Token List Converter

Convert jwt tokens from pasted text or uploaded local files.
JWT Token List Validator

Validate and explain issues in jwt tokens from pasted text or uploaded local files.
JWT Token Normalizer

Normalize, sort, and prepare jwt tokens from pasted text or uploaded local files.
kubectl Cheatsheet

kubectl cheat sheet — 100+ Kubernetes commands with real examples, common pitfalls, and YAML snippets.
Linux Permission (chmod) Calculator

Linux permission (chmod) calculator — convert between octal (755), symbolic (rwxr-xr-x), and ls -l forms, with safety warnings.
List Comparison

Compare two lists line by line: only in A, only in B, in both, and merged — all in your browser
LLM Pricing Calculator

Estimate daily and monthly LLM spend from tokens, request volume, and editable model prices.
Local File Workbench

Triage a mixed batch locally for file type mismatches, duplicate candidates, metadata privacy, archive risks, and next-step tools.
Log Error Analyzer

Paste logs and group repeated errors, warnings, stack traces, HTTP statuses, endpoint patterns, and time ranges into a local incident report.
Log Line Cleaner

Clean noisy logs by removing timestamps, ANSI colors, blank lines, long lines, or non-error entries in your browser.
MAC Address Deduplicator

Find duplicates and keep one clean copy of mac addresses from pasted text or uploaded local files.
MAC Address Extractor

Extract, dedupe, and export mac addresses from pasted text or uploaded local files.
MAC Address List Converter

Convert mac addresses from pasted text or uploaded local files.
MAC Address List Validator

Validate and explain issues in mac addresses from pasted text or uploaded local files.
MAC Address Normalizer

Normalize, sort, and prepare mac addresses from pasted text or uploaded local files.
MD5 / SHA Hash Generator

Compute MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512 hashes — all five at once, browser-only
Meta Description Brief Generator

Generate SEO meta description options from a page topic, keywords, and audience.
MongoDB Cheatsheet

MongoDB cheat sheet — 80+ shell commands & query operators for CRUD, aggregation, indexing, replication.
MPG Calculator

Distance + fuel → MPG (US/UK), L/100km, km/L, all at once + cost per mile/km — browser-only
Mulch Calculator

Garden bed area + spread depth → cubic yards, bags and bulk — multi-bed, metric/imperial — browser-only
Nginx Cheatsheet

Nginx cheat sheet — common configs, location/server blocks, SSL, reverse proxy, gzip, real examples & gotchas.
Number Extractor

Pull every number out of any text: integers, decimals, negatives, 1,234 commas, percents and 6.02e23, with instant sum and average
Office Document Inspector

Inspect DOCX, XLSX, and PPTX package structure for macros, media, embedded objects, custom XML, and size hotspots.
One-Rep Max Calculator

Estimate your 1RM from any set with five formulas at once, then read a full %1RM training-load table — kg or lb, browser-only
OpenAPI Endpoint Auditor

Audit OpenAPI JSON or YAML for endpoint coverage, missing operation IDs, security gaps, and weak response documentation.
Oven Temperature Converter

Convert °F, °C and gas mark instantly — plus the fan-oven setting and the recipe heat band, all in your browser
Package Lock Dependency Auditor

Inspect package-lock.json, pnpm-lock.yaml, or yarn.lock for duplicate versions, risky sources, prereleases, and missing integrity.
Paint Calculator

Wall area → litres & cans of paint, with doors/windows deducted, coats and price — metric & US units, browser-only
Password Generator

Generate strong, cryptographically random passwords and passphrases — entirely in your browser.
Password Strength Checker

Check password strength — entropy, time-to-crack, breach pattern check (offline).
PDF Metadata Extractor

Upload PDFs and extract document metadata, page-count hints, encryption flags, and producer details locally.
PDF Page Size Inspector

Inspect PDF MediaBox and CropBox dimensions to catch mixed page sizes before print, merge, or upload.
Phone Number Deduplicator

Find duplicates and keep one clean copy of phone numbers from pasted text or uploaded local files.
Phone Number Extractor

Extract, dedupe, and export phone numbers from pasted text or uploaded local files.
Phone Number List Converter

Convert phone numbers from pasted text or uploaded local files.
Phone Number List Validator

Validate and explain issues in phone numbers from pasted text or uploaded local files.
Phone Number Normalizer

Normalize, sort, and prepare phone numbers from pasted text or uploaded local files.
Plant Spacing Calculator

Bed size + in-row & row spacing → exact plant count — square vs triangular layout — browser-only
Pool Volume Calculator

Find how many gallons (and liters and cubic meters) your pool holds — rectangle, round, oval, or sloped floor — in feet or meters
Postal Code Deduplicator

Find duplicates and keep one clean copy of postal codes from pasted text or uploaded local files.
Postal Code Extractor

Extract, dedupe, and export postal codes from pasted text or uploaded local files.
Postal Code List Converter

Convert postal codes from pasted text or uploaded local files.
Postal Code List Validator

Validate and explain issues in postal codes from pasted text or uploaded local files.
Postal Code Normalizer

Normalize, sort, and prepare postal codes from pasted text or uploaded local files.
PostgreSQL Cheatsheet

PostgreSQL cheat sheet — 80+ commands & functions for psql, JSONB, CTEs, window functions, indexing, partitioning, advanced extensions.
Random Line Picker

Paste a list, pick N lines at random with crypto-grade fairness, draw raffle winners, copy in one click, all in your browser
Redis Cheatsheet

Redis cheat sheet — 80+ commands across strings, hashes, lists, sets, sorted sets, pub/sub, streams, scripts, with examples and pitfalls.
Robots.txt Auditor

Check robots.txt for user-agent groups, allow and disallow rules, sitemap declarations, crawl-delay, and unsupported directives.
Roofing Calculator

Roof footprint + pitch → real sloped area, roofing squares, shingle bundles or sheets and underlayment rolls — metric & US, browser-only
Semantic Version Deduplicator

Find duplicates and keep one clean copy of semantic versions from pasted text or uploaded local files.
Semantic Version Extractor

Extract, dedupe, and export semantic versions from pasted text or uploaded local files.
Semantic Version List Converter

Convert semantic versions from pasted text or uploaded local files.
Semantic Version List Validator

Validate and explain issues in semantic versions from pasted text or uploaded local files.
Semantic Version Normalizer

Normalize, sort, and prepare semantic versions from pasted text or uploaded local files.
Social Handle Deduplicator

Find duplicates and keep one clean copy of social handles from pasted text or uploaded local files.
Social Handle Extractor

Extract, dedupe, and export social handles from pasted text or uploaded local files.
Social Handle List Converter

Convert social handles from pasted text or uploaded local files.
Social Handle List Validator

Validate and explain issues in social handles from pasted text or uploaded local files.
Social Handle Normalizer

Normalize, sort, and prepare social handles from pasted text or uploaded local files.
SQL Formatter

Format and beautify SQL — supports MySQL, PostgreSQL, BigQuery, SQLite and 17 more dialects.
Square Footage Calculator

Add every room, get one total in ft² and m² at once — waste % + cost — browser-only
Stair Calculator

Total rise + steps → rise/run, slope, Blondel comfort check + side-view diagram — metric & imperial, browser-only
SVG Asset Auditor

Audit SVG viewBox, dimensions, scripts, external references, styles, ids, classes, title, and desc tags.
Temperature Converter

One temperature in, all four scales out — Celsius, Fahrenheit, Kelvin, Rankine — live formula, reference points, browser-only
Text File Cleaner

Upload a text file and remove BOM, null bytes, trailing spaces, and excessive final blank lines locally.
Text File Line Ending Converter

Upload or paste text and convert CRLF, CR, and LF endings to a consistent LF or CRLF output locally.
Tile Calculator

Room area + tile size + grout joint + waste → tiles, boxes, and cost — metric or imperial, browser-only.
Time Duration Calculator

Hours between two times, add or subtract time, and add up a timesheet — decimal hours + pay — browser-only
Unix Timestamp Converter

Unix timestamp ⇄ human date — seconds / milliseconds / ISO 8601 — UTC and local — browser-only
Timezone Converter

Convert any time between any two timezones — DST-aware, IANA database — browser-only
Timezone Meeting Planner

Plan meetings across timezones — see when everyone's working hours overlap.
Tire Size Calculator

Decode 225/45R17 into diameter, sidewall, circumference & revs/km — then compare two tires for speedometer error and clearance change. Browser-only.
TSV to CSV Converter

Turn tab-separated files into standards-friendly CSV with proper quoting, download, and local processing.
Unit Converter

Convert between length, weight, temperature, area, volume, speed, time — instant, browser-only
URL Deduplicator

Find duplicates and keep one clean copy of urls from pasted text or uploaded local files.
URL Extractor

Extract, dedupe, and export urls from pasted text or uploaded local files.
URL List Converter

Convert urls from pasted text or uploaded local files.
URL List Validator

Validate and explain issues in urls from pasted text or uploaded local files.
URL Normalizer

Normalize, sort, and prepare urls from pasted text or uploaded local files.
URL Query Params Extractor

Extract, deduplicate, inspect, copy, and export query parameters from one URL or many URLs locally.
UUID Deduplicator

Find duplicates and keep one clean copy of uuids from pasted text or uploaded local files.
UUID Extractor

Extract, dedupe, and export uuids from pasted text or uploaded local files.
UUID List Converter

Convert uuids from pasted text or uploaded local files.
UUID List Validator

Validate and explain issues in uuids from pasted text or uploaded local files.
UUID Normalizer

Normalize, sort, and prepare uuids from pasted text or uploaded local files.
Vim Cheatsheet

Vim cheat sheet — 100+ commands covering modes, motions, edits, search, registers, splits, with mnemonics.
VO₂max Calculator

Estimate your maximal oxygen uptake from four field tests — Cooper run, 1.5-mile, resting HR, Rockport walk — with a fitness grade by age and sex
Wallpaper Calculator

Wall size + roll spec + pattern repeat → strips per roll, total strips, rolls to buy — handles straight & half-drop match — browser-only
Weekly Report Generator

Weekly report generator — fill blanks, get clean markdown, no AI hallucination.
Wind Chill Calculator

Turn air temperature and wind speed into a feels-like number — and a frostbite warning — using the official NWS / Environment Canada formula. Metric or imperial, browser-only.
XML Formatter & Validator

Pretty-print, minify, and validate XML in your browser — preserves CDATA, comments, and namespaces.
XML ⇄ JSON Converter

XML to JSON converter — preserves attributes, nested elements, CDATA. Reversible.
YAML Formatter & Validator

Format and beautify YAML — re-indent, validate, minify, sort keys.
YAML to CSV Converter

Turn a YAML list of objects into an RFC 4180 CSV — column union, JSON or flattened nested values, comma / semicolon / tab, browser-only
YAML ⇄ JSON Converter

Convert between YAML and JSON — both directions, pretty-printed, error messages with line numbers — browser-only
YouTube Title Analyzer

Score a YouTube title for clarity, specificity, length, and keyword position.
ZIP Manifest Inspector

Read a ZIP central directory locally and flag traversal paths, encryption, duplicate names, and risky ratios.

Add Days to Date Calculator

AI Eval Planner

awk + sed Cheatsheet

AWS CLI Cheatsheet

Base64 Block Deduplicator

Base64 Block Extractor

Base64 Block List Converter

Base64 Block List Validator

Base64 Block Normalizer

Base64 to File Converter

Bash Cheatsheet

Batch File Rename Planner

Bcrypt Generator

Board Foot Calculator

Air Conditioner BTU Calculator

Caffeine Calculator

Carpet Calculator

Concrete Calculator

Content Refresh Checklist

Cooking Measurement Converter

Credit Card Number Deduplicator

Credit Card Number Extractor

Credit Card Number List Converter

Credit Card Number List Validator

Credit Card Number Normalizer

Cron Expression Explainer — Decode Any Cron + Next 20 Runs

Crontab Helper — Visual Builder & Explainer

CSP Policy Auditor

CSS Minifier

CSV Column Extractor

CSV Data Quality Profiler

CSV Deduplicator

CSV Filter

CSV Header Normalizer

CSV Sorter

CSV Stats Summary

CSV ⇄ JSON Converter

CSV to Markdown Table

CSV to TSV Converter

CSV to YAML Converter

CSV Transposer

curl Cheatsheet

Data Storage Converter

Date Difference Calculator

Days Until Date Calculator

Dilution Calculator

DNS Record Explainer

Docker Cheatsheet

Domain Name Deduplicator

Domain Name Extractor

Domain Name List Converter

Domain Name List Validator

Domain Name Normalizer

Drywall Calculator

Duplicate File Finder

Elasticsearch Cheatsheet

Email Address Deduplicator

Email Address Extractor

Email Address List Converter

Email Address List Validator

Email Address Normalizer

Email Validator

ENV Secret Scanner

Environment Variable Deduplicator

Environment Variable Extractor

Environment Variable List Converter

Environment Variable List Validator

Environment Variable Normalizer

EV Charging Cost Calculator

Fence Calculator

File Checksum Compare

File Hash Calculator

File MIME Type Inspector

File to Base64 Converter

Filename Sanitizer

Flooring Calculator

Font File Inspector

Freelance Hourly Rate Calculator

Gear Ratio Calculator

Git Cheatsheet