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THE FEUTEX TOOLKIT

Data Tools

Explore data tasks including JSON Formatter, JSON Minifier, JSON Validator.

335 tools in this collection.

New tools in this collection

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Choose the right tool

This data collection brings together related tasks with different inputs and outputs. Choose the operation that matches the result you need.

  • Start with JSON Formatter.
  • Other available workflows include JSON Minifier, JSON Validator, JSON Key Sorter.
  • Keep an original copy when converting data; review the result and the individual tool’s stated limits.
SEARCH BY TASK, FORMAT OR TOOL

335 tools

JSON Minifier

Remove unnecessary JSON whitespace while preserving the parsed data.

JSON Validator

Check JSON syntax and identify the root data type.

JSON Key Sorter

Recursively alphabetize object keys while preserving array order.

JSON to CSV Converter

Convert an array of objects to CSV with quoted fields and a combined header.

CSV to JSON Converter

Convert quoted CSV data to JSON objects using its first row as headers.

CSV to TSV Converter

Change comma-separated data into tab-separated data with quoted-field handling.

TSV to CSV Converter

Convert tab-separated tables to comma-separated values.

UUID Syntax Checker

Check UUID formatting, version 1–8, and the RFC variant.

URL Parser

Inspect a URL hostname, path, query parameters and fragment.

Unix Timestamp Converter

Convert Unix seconds, Unix milliseconds or an explicit-zone ISO date to UTC.

JSON Path Query

Extract a specific value from nested JSON using safe property and array paths.

NDJSON to JSON Parser

Parse newline-delimited JSON into an array, with source-line error reporting.

IPv4 CIDR Subnet Calculator

Calculate subnet mask, network range and usable addresses from an IPv4 CIDR.

HAR Request Timing Analyzer

Summarize request timings, HTTP errors and slow requests from a HAR export.

Web Access Log Analyzer

Count request status codes, response bytes and frequent paths in access logs.

JSON Schema Subset Validator

Validate common JSON Schema constraints and report unsupported keywords.

Query String Inspector & Sorter

Decode URL query pairs, identify duplicate keys and generate a sorted query.

Unix Permission Bits Decoder

Translate octal permission bits into rwx notation including setuid, setgid and sticky bits.

Arbitrary-Precision Base Converter

Convert signed integers between bases 2 through 36 without floating-point loss.

JSON Pointer Flattener

Flatten nested JSON into escaped JSON Pointer paths and leaf values.

CSV Column Data Profiler

Inspect column emptiness, unique values, numeric counts and numeric ranges.

JSON Merge Patch

Apply RFC 7396 merge-patch semantics; null removes an object property.

JSON Patch Applier

Apply add, remove, replace, test, move and copy operations using JSON Pointer paths.

Group JSON Records

Group a JSON array of records by a chosen property.

Join JSON Arrays by Key

Left-join object arrays on a unique key from the right-hand array.

Deduplicate JSON Records

Remove structurally identical JSON values while ignoring object key order.

Rename JSON Properties

Recursively rename object keys using an explicit mapping, rejecting collisions.

Infer JSON Schema from a Sample

Generate a conservative structural schema from one JSON sample.

JSON Property Byte Breakdown

Measure serialized UTF-8 sizes of top-level JSON property values.

JSON Array to NDJSON

Serialize each array item on its own newline-delimited JSON line.

JSON Object to Entry Pairs

Convert an object to ordered key/value tuples for tabular processing.

CSV Table Transposer

Swap rows and columns of a rectangular CSV table.

CSV Column Selector

Select and reorder named CSV columns.

CSV Row Filter

Filter a CSV column by text, empty values or numeric comparisons.

CSV Grouped Sum

Sum a numeric column grouped by a categorical column.

CSV Left Join

Join CSV tables on a key, preserving unmatched left rows.

CSV Wide to Long Converter

Turn value columns into variable/value rows while keeping an identifier.

CSV Long to Wide Converter

Pivot identifier, variable and value columns into a wide table.

CSV Column Splitter

Split a named column into two fields at the first separator.

CSV Numeric Row Sorter

Sort CSV records ascending by a finite numeric column.

CSV Header Renamer

Rename CSV headers using a JSON mapping without changing cell values.

CSV Table Concatenator

Append rows from a second table, aligning columns by header name.

CSV Row Difference

Report rows present only in one of two same-schema tables.

CSV Empty Column Remover

Drop columns whose data cells are all blank or whitespace.

URL Query Parameter Merger

Merge query key/value pairs into a URL, preserving fragments.

Raw HTTP Request Parser

Parse an HTTP/1 request line, unfolded headers and body as text.

Raw HTTP Response Parser

Parse an HTTP/1 response status line, headers and textual body.

HTTP Link Header Parser

Inspect simple Link header entries with URL targets and parameters.

Cookie Request Header Parser

Parse Cookie header name/value pairs, preserving duplicate cookie names.

Dotenv to JSON Converter

Parse simple environment assignments with literal quoted values.

INI to JSON Converter

Parse simple INI sections and key/value assignments into JSON.

IPv4 CIDR Membership Tester

Check which IPv4 addresses fall inside a selected CIDR block.

Semantic Version Comparator

Compare semantic versions using numeric prerelease precedence and ignoring build metadata.

cURL to Fetch Converter

Convert a constrained cURL command into a fetch call without executing it.

Parameterized SQL Insert Builder

Generate an INSERT statement and separate parameter values from a JSON record array.

Event Seating Planner

Allocate guests to equal-capacity tables and report spare seats and final-table occupancy.

Event Beverage Quantity

Plan beverage quantities from your own per-person serving assumptions and package sizes.

Fabric Shrinkage Planner

Estimate required prewash fabric length to retain a target length after shrinkage.

Knitting Gauge Adjustment

Translate a desired width and height into stitch and row counts at your measured gauge.

Circle Skirt Pattern Dimensions

Calculate the inner and outer pattern radii for a full-circle skirt.

Spindle Speed Calculator

Calculate spindle RPM from a chosen cutting speed and tool diameter.

Milling Table Feed

Calculate feed rate from chip load, cutting teeth and spindle speed.

Open Belt Length Estimate

Estimate open-belt length between two pulley pitch diameters.

Linear Stock Cutting Plan

Estimate the number of equal pieces cut from a stock length, including saw kerf and end waste.

Economic Order Quantity

Estimate EOQ and annual order frequency from demand, order cost and holding cost.

Warehouse Dock Capacity

Estimate daily dock throughput from dock count, operating hours and average service time.

Freight Load Utilization

Compare shipment cube and weight against a carrier’s capacity constraints.

Recipe Cost and Menu Margin

Calculate ingredient cost per serving and gross food margin at a proposed menu price.

Catering Batch Planner

Calculate whole batches and leftover portions from guest count and servings per batch.

Aquarium Water Change Dilution

Estimate concentration after repeated partial water changes with known replacement concentration.

Aquarium Working Water Volume

Estimate net water volume from internal dimensions, fill height and displacement allowance.

Event Break-Even Attendance

Estimate ticket sales needed to cover fixed event costs and per-attendee costs.

Fixed Point Representation Error

Quantize a decimal value to signed fixed point and inspect representational error.

Floating Point ULP Spacing

Estimate normal binary floating-point spacing at a specified magnitude.

Integer Counter Wrap Horizon

Estimate the remaining time before an unsigned fixed-width event counter wraps.

Hash Table Load Capacity

Plan power-of-two table capacity and unused slots at a chosen maximum load factor.

Circular Buffer Wrap Plan

Map a monotonic sequence number to a ring slot and estimate fixed storage.

Bitset Versus ID List Memory

Compare a dense membership bitset with an unsorted fixed-width identifier list.

Dictionary Encoding Size

Estimate a fixed-width dictionary index and dictionary payload for repeated strings.

Run Length Encoding Budget

Compare raw values with value-and-count pairs using a measured number of runs.

Sparse CSR Matrix Memory

Compare compressed sparse row arrays with a dense numerical matrix.

External Merge Sort IO Plan

Estimate initial sorted runs, merge passes and full-dataset disk traffic.

Distributed Shuffle Network Volume

Estimate remote bytes when data is uniformly repartitioned across workers.

Partition Hot Key Skew

Estimate a hot partition load when one key dominates otherwise uniform traffic.

CPU Instruction Mix CPI

Estimate weighted cycles per instruction for two measured instruction classes.

Branch Misprediction Cost

Estimate added cycles per instruction from branch frequency and misprediction penalty.

SIMD Tail Lane Utilization

Count vector iterations and inactive lanes in a final masked vector.

GPU Kernel Launch Overhead

Estimate wall time attributable to launching many small kernels.

Memory Stride Cache Line Use

Estimate useful bytes per touched cache line for regularly strided accesses.

Storage IOPS Throughput and Queue

Translate IOPS and request size to bandwidth and average outstanding requests.

Structure Cache Line Padding

Compare compact structures with line-rounded slots for avoiding adjacent sharing.

Binary Search Comparison Bound

Estimate worst-case comparisons and compare with a linear lookup bound.

LINQ Query to Parameterized SQL

Convert a documented LINQ query-expression subset into PostgreSQL, MySQL or SQL Server SQL with separate parameters.

TypeScript Formatter

Format TypeScript with the real Prettier parser, preserving string values and comments.

UUID Version Generator: v1, v4, v5 and v7

Generate time-based, random or deterministic UUIDs with version selection and batch output.

Broken JSON Repair

Broken JSON Repair with local processing, explicit controls and downloadable results.

SQL IN-Clause Parameter Builder

SQL IN-Clause Parameter Builder with local processing, explicit controls and downloadable results.

RAG Character Chunk Explorer

RAG Character Chunk Explorer with local processing, explicit controls and downloadable results.

cl100k_base Token Counter

cl100k_base Token Counter with local processing, explicit controls and downloadable results.

Product Variant SKU Generator

Generate distinct normalized SKUs for every size and color combination, with collision detection.

Environment File Difference

Compare dotenv files by added, removed and changed keys without exposing values in the result.

Nested CSV to JSON Converter

Convert CSV columns with dotted headers into nested JSON, with selectable delimiters, optional type inference and empty-value handling.

JSON Schema Example Builder

Generate a sample JSON value from explicit object, array, scalar, enum and numeric constraints.

HTTP Cache-Control Inspector

Inspect response cache directives and identify malformed ages or conflicting public/private instructions.

API Pagination Response Inspector

Find repeated record IDs across supplied API response pages and count distinct records.

VCF to CSV Contacts

Export names, email addresses, phone numbers and organizations from a vCard contact list to a spreadsheet.

VCF Contact Deduplicator

Remove repeated contacts by primary email or phone while keeping the first matching record.

ICS Calendar to CSV

Extract event definitions, timestamps, locations and recurrence rules from an exported calendar.

Calendar Conflict Checker

Find overlapping UTC or all-day events in an ICS export, with overlap duration for each pair.

Batch File Renamer ZIP

Download numbered copies of selected files in one ZIP, with a CSV mapping original and new names.

Filename Portability Checker

Check filenames for common Windows restrictions, long components and case or Unicode collisions.

JSON to TOML

Convert JSON files to TOML with format-specific validation and downloadable output.

TOML to JSON

Convert TOML files to JSON with format-specific validation and downloadable output.

First Difference in XML Text

Quickly compare two XML documents in your browser. Paste XML, validate, and see whether they match with a clear diff summary—free and fast.

YAML Formatter

Format YAML with consistent indentation and spacing, keep comments, and catch common indentation mistakes. Runs in your browser with copy and reset.

Convert YAML to JSON Online

Convert your YAML files to JSON easily and quickly with our online converter. Fast, secure, and reliable.

Avro Formatter and Basic Structure Checker

Format and minify Avro schemas with optional key sorting and basic validation. Paste your schema JSON, pretty-print for readability, or minify for storage. Runs fully offline in your browser.

Markdown Formatter

Format Markdown instantly: fix heading spacing, normalize list bullets, trim trailing spaces, collapse blank lines, and standardize newlines. Runs in your browser.

Online Markdown Table Generator

Paste CSV/TSV or upload a file to generate a clean Markdown table. Includes copy, download, drag-and-drop import, diagnostics, and large-input handling.

Online Kubernetes YAML Generator

Generate Kubernetes YAML configuration files effortlessly with our online tool. Perfect for developers looking to streamline their Kubernetes workflows.

Online JSON Generator from Schema

Generate example JSON from a JSON Schema directly in your browser. Supports objects, arrays, enums, defaults/examples, formats, and local $ref. Fast, client-side, no uploads.

Online Hash Generator Bcrypt

Effortlessly generate bcrypt hashes with our secure online tool. Perfect for securely hashing passwords and sensitive data.

Validate IBAN Checker

Validate an IBAN instantly: checksum (MOD 97), country length, normalized + formatted output, and clear error reasons. Works offline in your browser.

Amazon Profit Calculator Tool

Calculate Amazon profit per unit and total: referral fee %, FBA/fulfillment, storage, ads, COGS, inbound costs. Get net profit, margin, ROI, and break-even sale price.

Base64 Checker

Standard/URL-safe validation Required padding policy Ignore whitespace Decode and encode

Base64 Formatter Online

64/76/custom wrapping Standard/URL-safe conversion Padding policy Minify

Calculator Tool for LLM

Batch expressions Plain/JSON results Math functions LLM-ready copy

Calculator Tool for LangChain (Generator)

Python tool code TypeScript tool code Configurable function scaffolding

Calculator Tool

Scientific expression parser Keypad Previous answer Math functions

Calculator Tools (TRA): Total Return + Annualized Return

Start/end investment Days/years Total return Annualized return

Canonical Checker

Canonical extraction Page URL comparison Noindex check Tracking parameter warnings

Case Checker CS (C# Naming Case Checker)

Identifier style detection C# naming checks Camel/Pascal/constant conversion

Case Checker (CS:GO Config)

Config command parsing Exec filename casing .cfg extension Linux case-sensitivity warnings

Case Checker

Per-line case detection Trim toggle Ignore punctuation

Case Checkerboard (Alternating Case) Tool

Alternating case Word/line reset Start-case control Pattern check

Case Formatter Online

Ten casing styles Per-line processing Acronym preservation Identifier styles

Unicode Text and Invisible Character Cleaner

Invisible character cleanup NBSP/control handling Smart punctuation replacement Whitespace normalization

Convert Price Checker

Manual exchange rate Percent/fixed fees Tax add/remove Expected-price tolerance Rounding

Convert Town DPI Checker

Pixels to print size Required pixels Required DPI Batch and paper presets

Cron Checker (6 Fields)

Six-field parsing Next run enumeration Local timezone Names/ranges/steps

Cron Checker (Java / Quartz)

Five/six/seven fields Quartz syntax validation DOM/DOW rules Java scheduler guidance

Quartz Cron Formatter

Five to six-field conversion Quartz normalization Optional year

Cron Formatter

Five/six/seven fields Normalization Field explanation Names and range diagnostics

CSROI Checker

Annual program cost Savings Revenue uplift with margin Payback Net benefit

CSV Checker

Delimiter detection Header handling Ragged rows Strict quoting Trim/blank policies

CSV Duplicate Checker

Full-row/keyed duplicates Keep first/last Unique/duplicate output Trim/case comparison

CSV Formatter (C#)

CSV formatting Quote modes Custom delimiter C# code generation

CSV Formatter (Python)

CSV normalization Ragged-row padding Table preview Python code generation

CSV Formatter

Output delimiter Quoting policy LF/CRLF CSV download

CSV Tool (Windows-Friendly)

File input CSV normalize JSON/TSV conversion CRLF output

Diff Checker Online

Line/word/character diff Trim/case/blank controls Hide unchanged HTML report

Custom Fade Percentage Classifier

Parse supplied percentages Tier labels Range validation

Free CSV Compare Tool

Keyed or row-index matching Ignore order Trim/case options Difference report

Free CSV Playlist Import Tool

CSV field mapping M3U8 PLS JSON playlist XSPF Durations

Free CSV Tool

File loading Validate/clean Deduplicate Sort Select columns Download

Free Hash Tool

Text/file hashing MD5 and SHA family Hex/Base64 Whitespace options

Free Online Base64 Converter

UTF-8 encode/decode URL-safe alphabet Padding options Wrapping Whitespace policy

Free Sitemap Generator Tools

URL/CSV to XML Split sitemap Sitemap index Extract URLs Robots sitemap lines

Free XML Tools

Validate Format/minify Document info Escape/unescape Declaration/comment policies

Git Diff Formatter Online

ANSI removal Metadata filtering Safe/compact/changes modes Tab expansion Commit headers

Hash Checker Online

Text/file checksum MD5/SHA family Expected digest verification Auto-detect algorithm

Hash Formatter

Hex/UUID digest normalization Record splitting Reverse bytes Format diagnostics

IBAN Checker: Validate & Check International Bank Account Numbers

Batch IBAN checks Mod97 Country lengths Bank component breakdown Table/JSON report

JSON Diff Formatter

Structural diff Added/removed/changed values JSON Patch Ignore array order

JSONC Formatter for Comments and Trailing Commas

JSONC comments Trailing commas Pretty/minify Tabs Sorting

Strict JSON Formatting and String Escaping Workspace

Strict validate Pretty/minify Key sort JSON string escape/unescape Tab indentation

JSON Tools Plugin for Notepad++ 64-bit Download (x64) — Install Helper

64-bit plugin setup guide Portable/manual paths Install-folder customization

JWT Checker (GitHub)

JWT extraction from logs Batch claims inspection HMAC verification

JWT Checker

Strict JWS split Header/payload decode HMAC signature verification Sensitive-claim redaction

JWT Formatter

Header/payload decode Raw segments Pretty/minify Sort keys

JWT Security Checker

JWS/JWE headers Algorithm warnings Reference time TTL/security diagnostics

Keyword Checker

Keyword list validation Deduplication Length/intent flags Page-text phrase counts

Keyword Formatter

Delimiter conversion Prefix/suffix Case/dedupe/sort Regex OR JSON/CSV output

Markdown Checker Online

Fences/headings References/links Whitespace Line length

Markdown Checker (Python)

Markdown checks Python checker source Configurable rules

Meta Checker

Pasted HTML metadata Title/description guidelines Robots/canonical Social tags Copy report

Meta Formatter

HTML/KV input Sort/dedupe Normalize viewport Preserve repeated social images Summary

Notepad++ CSV Formatter

Input/output delimiter CSV/TSV/Markdown/aligned text Ragged padding Line endings

Online Base64 Key Generator

Crypto random bytes Base64/Base64URL/hex Entropy count Env assignment

Online Case Study Generator

User-entered case facts Markdown/HTML/plain outputs Tone/length Anonymization

Online Converter: Percentage to CGPA

Percentage to CGPA 9.5-divisor/linear/custom schemes Scale controls

Online Converter: SQL to MySQL

T-SQL to MySQL rewrites identifier/type/function options paging conversion

Online Converter

JSON/CSV transformations Base64 URL HTML coding text case number base timestamp conversion

Online Cron Converter Download

uploaded cron batches human descriptions TXT JSON CSV output error limits

Online CSV Converter

CSV JSON bidirectional TSV pipe Markdown NDJSON delimiter detection headers and trim

Online CSV File Generator

JSON column specifications seeded synthetic rows sequence dates UUID email CSV quoting/newline controls

Online CSV Generator

DSL column specifications seeded data typed random values header delimiter quoting controls

Online Diff Generator

ordered line/word diff context hiding input swap

C and C++ Indentation Helper

C/C++ indentation preprocessor preservation switch/case indentation

Text Formatter with Line Numbers

tabs to spaces trailing trim blank collapse line numbers LF/CRLF

Online Formatter PowerShell

PowerShell brace indentation here-string preservation indent/newline options

Online Formatter Tool

tab/space conversions line wrapping blank-line limits final newline compact text

Online Formatter XML

XML parse validation pretty/minify indent preserve declaration remove comments

Multi-Format Formatting Helper

JSON XML HTML CSS SQL text formatting auto detection minification

Online Generator Auslosung

weighted draws seeded or cryptographic random deduplication shuffle

Online Generator

UUIDv4 passwords slug lorem random integers Base64

Proportional GPA Scale Converter

custom scale proportional conversion forward/reverse GPA percentage arithmetic

Hash Identification and Candidate Verifier

digest length identification hex/Base64 decoding candidate hash checks dictionary checks

Online Hash Converter

text/hex/Base64/file hashing MD5 and SHA family hex/Base64 digest conversion

Online Hash Generator for a File

file digests multiple algorithms file metadata uppercase output

Online Hex to Base64 Converter

hex/Base64 bidirectional 0x/whitespace normalization URL-safe Base64 optional padding

Online JSON Converter from String

escaped JSON unwrapping parse/stringify indent/minify

Online JSON Converter to CSV

JSON to delimited table nested flatten root wrappers quote/null/header options

Online JSON Converter

JSON pretty/minify/validate CSV export query strings escape/unescape lenient syntax

Online JSON Generator from Java Class

Java class field parsing type-derived JSON example nested/collection subset

Online JSON Generator

key paths to nested JSON value coercion object/array roots strict mode

Online JSON Schema Converter

JSON inference schema sample generation OpenAPI components draft/required/additionalProperties controls

Online JWT Converter

JWT segment diagnostics time claim conversion unsigned token encoding minify

Online JWT Generator (RS256)

RS256 sign/verify RSA key import/generation kid and time claims

Online JWT Generator

HS256 HS384 HS512 unsigned tokens decode/verify automatic time claims

Online Kebab Case Converter

kebab case camel/acronym splitting diacritic removal Unicode/lowercase controls

Keyword Idea Template Generator

seed-based keyword ideas question/comparison/intent modifiers dedupe CSV export

Online Loan Cash Converters

principal or net-cash mode origination/other fees payments cash-flow effective rate

Online Markdown Converter

Markdown to HTML HTML to Markdown document wrapper preview minify

Online Markdown File Generator

Markdown document export YAML front matter duplicate-aware TOC filename/title

Online Markdown Generator

emphasis/headings lists/checklists code blocks links/images tables escaping

Online MD5 Hash Converter

MD5 generation uppercase output expected digest comparison

Online Meta Converter Free

meta extraction HTML JSON key-value interchange OG/Twitter normalization

Online Meta Tag Generator

meta tags robots directives OG/Twitter canonical/locale/site name escaping

Online Normalize Generator Free

minmax/zscore/L1/L2 sample/population SD custom range JSON/CSV export summary

Online Normalize Generators

matrix normalization column/global scope decimal scaling headers/missing values

Online Pascal Case Converter

PascalCase camel boundary detection acronym preservation diacritic removal

Online Percentage Converter

percent/decimal/fraction interchange simplified fractions percent-of change

JSON, XML and SQL Formatting Helper

auto JSON/XML/SQL pretty/minify JSON sorting SQL uppercase/compact

Online Regex Converter to Text

regex literal escape/unescape delimiter/anchor stripping visible control escapes

Online Regex Generator (Python)

example-derived patterns literal escaping Python flags/snippet matching preview

Online Remove Duplicates Generator From Array

structured JSON array dedupe stable object keys case/whitespace normalization multiple exports

Online Remove Duplicates Generator From List

custom-delimited list dedupe case folding sort separator transformation

Online Robots.txt Generator

multi-group robots generation directive normalization sitemaps templates

Online Schema Converter

JSON-LD extraction graph combination context normalization HTML script output sort

SQL Dialect Rewrite Helper

four SQL dialects identifier quoting pagination type mapping

Online SQL Generator: CREATE TABLE

CREATE TABLE four dialects schema/constraints identity/composite PK drop-if-exists

Online SQL Generator

JSON-driven CRUD SQL parameter binding multirow insert dialect quoting

Online SQL Query Generator

form-based CRUD SQL raw WHERE/ORDER/SET identifier checks unsafe-write guard

Text to RTF and Word-Compatible HTML

text to RTF Word-compatible HTML font/title controls Unicode RTF escaping

Online Text Converter

case/whitespace/line transforms HTML URL Base64 ROT13 counts chaining

Template-Based Text Draft Generator

headlines/outline/product/email templates tones seed keywords/avoid list

Online Text Generator (Free)

lorem/random/keyword filler seed word/sentence/paragraph counts punctuation

Online Title Case Converter

editorial title casing small words acronyms hyphens/apostrophes multiline

Online Use Case Generator

use-case drafting actors/system brief/full detail alternate flows Markdown

Online UTM Generator kostenlos ohne Anmeldung

UTM builder parse existing URL keep fragment replace/preserve UTMs

Online UTM Generator

batch UTM links extra parameters query-only output preserve/replace UTMs

Text, RTF and HTML Interchange

RTF generation/parsing HTML/text bullet/quote normalization Word-compatible HTML

Online Word Generator for Pictionary

Pictionary prompts category/difficulty custom pool exclusions no repeats

XML to CSV, TSV and SpreadsheetML

XML row inference attributes/nested flattening CSV TSV HTML SpreadsheetML XML

Online XML Converter

XML/JSON interchange attributes and text nodes pretty/minify escape/unescape

Pasted CSV and TSV to XML

delimited table to XML header-derived tags tag sanitization root/row names

Online XML Generator from XSD

XSD to sample XML root selection simple/complex types occurrence/depth controls

Online XML Generator

JSON to XML custom root/item tags attributes tag sanitization declaration

Online XML to Schema Converter (XSD)

XML to XSD type inference attributes repeating elements complex sequences

Online XSD to JSON Schema Converter

XSD to JSON Schema draft selection named definitions attributes required/arrays

Custom Completion Progress Calculator

progress fraction parsing target total/percent remaining progress decimal precision

Percentage Checker

percent-of ratio change adjustment reverse-original precision

Percentage Formatter for Matplotlib

Matplotlib code axis/colorbar selection fraction/percent scale custom symbol preview

Percentage Formatter (Python)

Python percent format snippets preview grouping/sign trim zeros parenthesized negatives

Percentage Formatter

batch percent formatting locale decimal/percent/auto modes grouping/sign/precision

Postgres SQL Checker

dollar-quoted strings nested comments statement/semicolon checks

Multi-Format Pretty-Print Helper

format auto-detection JSON key sort XML pretty/minify SQL/text cleanup

Profit Calculator Tool

per-unit and total profit fees and fixed costs tax-inclusive/exclusive pricing

Profit Margin Calculator Tool

margin and markup quantity totals target-margin selling price

Bash Regex Snippet Builder with JavaScript Preview

JS match/replace preview Bash/grep snippets shell quoting ERE incompatibility warnings

C# Regex Literal Builder with JavaScript Preview

C# string unescape C# code literals JS regex preview

Java Regex Snippet Builder with JavaScript Preview

Java string decoding Java Pattern snippets JS match/replace preview compatibility warnings

Regex Online Converter

regex source to JSON string JavaScript constructor snippet

Regex Tool Online

test/match/replace/split slash-pattern parsing structured JSON result

Robots Checker

robots lint report group inventory crawl-delay/sitemap diagnostics access testing

ROI Checker CS2

batch item ROI net proceeds after fees annualized return

ROI Checker

total cost basis ROI annualized return

Ruby Hash Formatter Online

Ruby hash subset parser pretty/minify symbol label/quote settings Ruby to JSON

JSON-LD Syntax and Heuristic Linter

multi-block extraction context normalization graph/type summary optional common-field hints

Schema Checker URL Builder

URL normalization tracking removal external testing links

Schema Formatter Online

JSON-LD cleanup schema-first key ordering script wrapping download

Schema Formatter

HTML JSON-LD block extraction pretty/minify key sorting script wrapping

Schema Tool Generator

six entity forms FAQ/breadcrumb parsing nested schema construction extra properties

Sentence case formatter

sentence capitalization brand/acronym preservation newline boundaries

SEO Checker Tool Online Free

pasted HTML SEO checks metadata/headings alt/link report keyword analysis

Sitemap Checker (Google) — Offline Validator

sitemap XML/index validation protocol limits duplicate and date hints

Sitemap Checker Online

XML/index lint optional base URL duplicates and metadata fields

Sitemap Checker (Offline)

XML sitemap/index checks URL-list checks duplicates metadata hints

Sitemap Formatter

XML pretty/minify loc extraction URL list to sitemap

Slug Checker

batch slug lint repair suggestions path and length controls

Slug Tool: URL Slug Generator

configurable slugs accent handling Unicode option maximum length

Spring Cron Formatter

Spring cron normalization field labels simple human hints

SQL Checker (Oracle)

Oracle lexical scan dialect incompatibility hints multi-statement warning

SQL Checker

SQL lexical checks DML WHERE warning formatting dialect options

SQL Formatter (VSCode-Friendly)

SQL pretty/minify keyword casing comment options editor setting snippet

Test Case Generator Online

requirement templates negative/boundary cases priority/preconditions three exports

Rule-Based Text Style Inspector

text lint repeated words typo map passive-voice heuristic JSON report

Text Checker English

English rule lint readability positioned issues auto-fix

Text Checker

counts character/word limits character hygiene warnings

Text Formatter Online

line cleanup wrapping numbering/prefix/suffix LF/CRLF output

Text Formatter

paragraph reflow blank-line limits tabs/indent wrap

Title Generator Tool (Free)

four title template families tone length/count dedupe

Title Template Generator with Brand and Year

brand title suffix year/numeric hooks title templates length counts

XML Validation against an XSD Subset

XSD sequence subset required attributes basic lexical types/enums order/occurrence checks

SEO Brief Template Builder

SEO title/description templates slug FAQ/link suggestions

URL Encode Checker

URI/component encoding decoding percent-escape lint form plus handling

URL Slug Checker

URL/path slug extraction slug lint normalized suggestions

UTM Checker Tool

batch campaign audit cleaned URLs duplicate handling CSV report

UTM Checker

URL/query-only UTM audit duplicate/missing fields normalized link

UTM Parameter Checker

query and hash UTM extraction required-field options parameter report

Validate BIN Checker

6/8-digit IIN structure network hints PAN Luhn batch TSV

Validate Checker

JSON/XML/CSV syntax Base64/UUID/email/URL/IP auto-detection

Validator Tool

13 validation modes batch lines JSON document phone/date/color/card checks

Validator Toolkit

batch auto-detection JWT decode Base64URL structured report

VAT Checker API Helper

VAT format check batch payload API code snippets

VAT Checker Great Britain (GB)

batch GB VAT checksum special ranges prefix rule

VAT Checker Ireland (IE)

Irish VAT formats mod23 checks checksum explanation

VAT Checker UK

GB/XI normalization branch identifiers GD/HA range checks checksum

Ukrainian Tax Identifier Length Inspector

identifier length detection batch normalization UA prefix removal

Batch VAT Format and Checksum Helper

multi-country VAT structure GB/common IE checksum batch summary

Word Checker Count

Unicode word count tokenization controls reading time sentence/paragraph metrics

Word Checker Free

word frequency case-sensitive option hyphen setting counts/read time

Word Checker (Scrabble)

Scrabble tile scoring rack feasibility blank tiles user dictionary

Word Checker

text counts word limit filtered repeats reading time

Plain Text Formatting Presets

punctuation spacing bullet cleanup smart quotes wrap/presets

Word Formatter Online Free

join wrapped prose case conversion bullets quote/dash normalization

Word Formatter Online

word extraction dedupe/sort words delimiter export text cleanup/case/wrap

Word Formatter

paragraph joining list-aware wrapping tab expansion punctuation cleanup

XML Checker (DayZ)

XML well-formedness DayZ economy hints duplicate type names pretty/minify

XML Structure and Tree Inspector

XML file loading syntax diagnostics tree view invalid-character removal

XML Formatter for VS Code

XML validate/pretty/minify mixed content format options LF/CRLF

XML Tools Notepad++ — Manually Install (ZIP/DLL) + Folder Path Generator

Notepad++ install plan bitness mismatch warning portable/installer paths

XML Tools Plugin for Notepad++ — Online Formatter, Validator & XPath

XPath query XML syntax pretty/minify

YAML Checker Online

YAML parser YAML to JSON YAML dump

YAML Formatter Online

line-based reindent trailing whitespace cleanup

YAML Formatter and PyYAML Script Builder

basic whitespace formatter PyYAML code generation

YAML Formatter and VS Code Settings Builder

YAML whitespace cleanup VS Code settings generator

YAML Tool Like jq

YAML parsing dot-property extraction JSON result

YAML Tools

YAML default-schema parser YAML to JSON YAML format

HAR Privacy Redactor

Remove headers, cookies, bodies and query values from a HAR network log locally, retaining request timing and status for debugging.

JSON to TypeScript Type

Infer a TypeScript type from a JSON example, including nested objects, mixed arrays, nullable values and quoted property names.

TypeScript String Union Builder

Turn a list of allowed values into an escaped TypeScript string-literal union, removing duplicate entries locally.

Text Cleanup Studio

Clean and reshape text locally with literal replacement, line filters, email or URL extraction, natural sorting, deduplication and TXT, CSV or JSON export.

More Creative Studios

Data Table Studio — Clean, Filter & Export

Clean CSV, TSV or JSON tables, filter rows, remove duplicates, group and aggregate values, reorder columns and export with a readable table preview.

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