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Start from the main library pages, categories, and priority utilities if you are not searching for a specific format.

All toolsThe complete utility catalog.Workflow guidesShort explanations that connect tools to real tasks.SearchFind a utility by format, task, or workflow.HTML sitemapA full crawlable index of public pages.Text toolsCount, rewrite, and transform text directly in your browser.Developer toolsSmall formatting and data utilities for everyday development work.Encoding toolsEncode, decode, and convert common data formats without uploading files.SEO toolsBuild campaign URLs, preview search snippets, and prepare pages for discovery.Business toolsPlan rates, quotes, and practical business numbers with transparent browser-local calculations.Word CounterChecking article, essay, and description length before publishing.Character CounterChecking short bios, titles, descriptions, and form-field copy.Case ConverterChanging headings, labels, file names, and short text snippets.Whitespace CleanerCleaning text copied from PDFs, emails, documents, and spreadsheets.JSON FormatterPretty-printing JSON responses, config snippets, and copied payloads.JSON Schema Generator From JSONGenerating a first-pass JSON Schema from an example JSON object or array.YAML Formatter and ValidatorFormatting YAML mappings, lists, and multiline strings before adding them to source control.Unix Timestamp ConverterConverting Unix epoch values from logs, APIs, databases, and support tickets.URL Encoder / DecoderEncoding URL components, query values, and reserved characters.UUID Generator and FormatterCreating quick test IDs for fixtures, mock data, and examples.XML Formatter and ValidatorPretty-printing XML snippets, feeds, config files, and API samples.Text Diff CheckerComparing two versions of copied text.

Popular tools

JSON Formatter

Format, minify, and validate JSON in your browser.

DeveloperJSONDeveloper

Word Counter

Count words, characters, sentences, and paragraphs in plain text.

TextWritingText

Character Counter

Count characters with and without spaces, plus words and lines.

CSV to JSON Converter

Convert pasted CSV into JSON arrays or rows locally in your browser.

DeveloperCSVJSON

JSON to CSV Converter

Convert JSON arrays or flat objects into CSV locally in your browser.

DeveloperJSONCSV

YAML Formatter and Validator

Format and validate YAML 1.2 with line and column errors, multi-document support, and local browser processing.

DeveloperYAMLDeveloper

Guide starting points

Browse all guides

How to Clean Copied Text Without Breaking Paragraphs

Clean copied text, remove extra spaces, preserve paragraph breaks, and prepare text for counting or case conversion with Tidy Utils.

URL Encoding vs HTML Entities vs Base64

Learn when to use URL encoding, HTML entities, or Base64, then open the right browser-based Tidy Utils tool for the job.

Convert CSV to a Markdown Table for GitHub Without Broken Rows

Convert CSV to a GitHub Markdown table, escape pipe characters, preserve quoted commas and line breaks, diagnose uneven rows, and preview the result locally.

JSON vs SQL Formatting: What Formatters Do and Do Not Validate

Compare JSON and SQL formatting, see what each formatter checks, and learn when syntax, schema, dialect, or database validation still matters.

UTM Source, Medium, and Campaign Examples

Learn practical UTM source, medium, and campaign examples for tagged URLs, then build a consistent campaign link.

Title Tag and Meta Description Length Guide

Check title tag and meta description length, preview a search snippet, and understand why search results can differ.