Privacy-first formatting
Most workflows stay in the browser so sensitive payloads do not need to leave your machine.
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Private by default
Format, validate, convert, and compare developer formats from one serious workspace.
FormatHive combines focused SEO landing pages with a flagship workspace built for real payloads, safer previews, and repeat debugging work.
Format JSONRuns locally
Output
{
"project": "FormatHive",
"private": true,
"workflow": [
"format",
"compare"
]
}Popular tools, one shared product system
Search every tool by name, format, action, or conversion target. Results appear instantly as you type.
6 toolsFeatured tools
View all toolsPopular tools, one shared product system
Open tool: JSON FormatterFeatured
JSON Formatter
Structured DataBeautify, validate, minify, compare, and inspect JSON payloads without leaving your browser.
jsonformatterto yaml
Open tool
Open tool: XML FormatterFeatured
XML Formatter
Structured DataFormat well-formed XML for SOAP, feeds, exports, and legacy integrations, then inspect its parsed tree.
xmlformatterto json
Open tool
Open tool: YAML FormatterFeatured
YAML Formatter
Structured DataClean up YAML configuration files with readable indentation, parser-aware validation, and JSON conversion support.
yamlformatterto json
Open tool
Open tool: SQL FormatterFeatured
SQL Formatter
CodeImprove SQL readability with structured line breaks, keyword casing, and better scanability for reviews and debugging.
sqlformattersql formatter
Open tool
Open tool: HTML FormatterFeatured
HTML Formatter
MarkupPrettify or compress HTML while keeping a preview path for layout debugging and email/template cleanup.
markupformatterhtml formatter
Open tool
Open tool: GraphQL FormatterFeatured
GraphQL Formatter
CodeClean up GraphQL operations with readable indentation and parser-backed syntax checks before they hit your API client.
developer toolformattergraphql formatter
Open tool
One engine across every tool
Focused tool pages and the flagship workspace share the same engine layer.
Built for repeated use
Recent history, quick actions, compare mode, and previews keep the toolchain tight.
Practical guides for reliable developer workflows / Engineering notes from building FormatHiveView all guides
Practical guides for reliable developer workflows
View all guides
Structured Data3 min read • Jul 18, 2026
Validate JSON before formatting: a production review checklist
A standards-based workflow for finding invalid JSON, ambiguous numbers, duplicate names, and unsafe assumptions before a payload moves downstream.
By FormatHive Standards Review
Configuration3 min read • Jul 20, 2026
Review YAML configuration without guessing what the parser sees
A practical YAML 1.2 review method covering indentation, scalar types, aliases, multiline values, and safe conversion to JSON.
By FormatHive Standards Review
Engineering notes from building FormatHive
View all blog posts
Markup3 min read • Jul 19, 2026
XML well-formedness, validity, and safe preview are different checks
Why a cleanly formatted XML document can still fail a schema or create unsafe parser behavior, and how to review each boundary separately.
By FormatHive Standards Review
Content3 min read • Jul 21, 2026
A Markdown regression checklist based on CommonMark boundaries
Concrete fixtures for headings, nested lists, fenced code, links, raw HTML, and sanitization when a Markdown formatter changes whitespace.
By FormatHive Standards Review
Encoding3 min read • Jul 23, 2026
Base64 is an encoding, not encryption or access control
How standard Base64 and base64url differ, where padding matters, why Unicode needs a byte encoding, and what decoding can never prove.
By FormatHive Standards Review