Folder Tree Generator
Turn a directory structure into a text tree for your README.
Developer ToolsDeveloper Tools
Format and convert structured data, test expressions, encode text, generate identifiers, and prepare web configuration.
Markdown Table Generator
Make tidy Markdown tables without counting the pipes.
Developer ToolsCSV / JSON Converter
Move your data between spreadsheets and structured JSON.
Developer ToolsJSON to TypeScript
Give your sample data a useful set of types.
Developer ToolsJSON Compare
Find what changed between two JSON documents.
Developer ToolsJSON Formatter
Make JSON readable and track down syntax errors.
Developer ToolsHTML / Markdown Converter
Move between markup formats with less cleanup.
Developer ToolsCron Explainer
Understand a schedule and see when it runs next.
Developer ToolsDocker Run to Compose
Give a long Docker command a more readable home.
Developer ToolsCSS Specificity Calculator
Understand which selector wins, and why.
Developer ToolsBase64 Encoder & Decoder
Convert UTF-8 or raw bytes with strict Base64 and Base64url validation.
Developer ToolsURL Encoder & Decoder
Percent encode text for URL components, form values, and complete URIs.
Developer ToolsHTML Entity Encoder & Decoder
Escape HTML text or safely decode named and numeric references.
Developer ToolsUnicode Escape Converter
Convert Unicode text to UTF-16 or code-point escapes and back.
Developer ToolsASCII Table
Inspect every ASCII value with numeric forms and control descriptions.
Developer ToolsText to Binary Converter
Convert UTF-8 text to eight-bit bytes and inspect the binary.
Developer ToolsHash Generator
Calculate local SHA-2 hashes for text, encoded bytes, and files.
Developer ToolsHMAC Generator
Create local HMAC tags with explicit key and message encodings.
Developer ToolsXML Formatter
Validate and format XML locally while preserving mixed content, CDATA, comments, and namespace declarations.
Developer ToolsYAML Formatter
Normalize YAML 1.2 data with precise numeric tokens, sorted keys, block or flow style, and bounded alias expansion.
Developer ToolsJSON Schema Generator
Infer a JSON Schema Draft 2020-12 from sample JSON, including nullable values, optional fields, and heterogeneous arrays.
Developer ToolsJSON / YAML Converter
Convert JSON and YAML locally while preserving long integers and decimal precision and rejecting unsupported YAML values.
Developer ToolsXML / JSON Converter
Convert XML to an ordered JSON tree and back, preserving mixed content, attributes, namespaces, comments, and text values.
Developer ToolsCSV Viewer
Inspect CSV in a paginated table, search individual columns, profile missing values, and export filtered records locally.
Developer ToolsTSV / CSV Converter
Convert tab-separated and comma-separated records with quote-aware parsing, multiline fields, BOM options, and local exports.
Developer ToolsCSV Column Extractor
Select and reorder CSV columns with a header-aware preview, quote-safe export, and no numeric type conversion.
Developer ToolsCSV Deduplicator
Remove duplicate CSV records by selected key columns, keep the first or last occurrence, and preview removed records.
Developer ToolsCSV Sorter
Sort CSV by up to three columns with exact decimal comparisons, stable ties, ascending or descending order, and blank placement.
Developer ToolsRegex Tester
Test JavaScript regex matches and capture groups in a timed worker.
Developer ToolsJWT Decoder
Inspect unverified JWT headers, payloads, and embedded UTC dates.
Developer ToolsUUID Generator
Generate random UUIDv4 or timestamp-prefixed UUIDv7 batches.
Developer ToolsULID Generator
Generate compact ULIDs and inspect their embedded timestamps.
Developer ToolsPassword Generator
Create unbiased random passwords with transparent entropy estimates.
Developer ToolsRobots.txt Generator
Build crawler path rules and sitemap entries for robots.txt.
Developer ToolsMeta Tag Generator
Create escaped page metadata and Open Graph website tags.
Developer ToolsUTM Builder
Build encoded campaign URLs while preserving other parameters.
Developer ToolsRedirect Rule Generator
Create exact-path Apache and Nginx redirect snippets.
Developer ToolsHTTP Status Code Reference
Search 36 selected HTTP response codes and practical examples.
Developer ToolsBox Shadow Generator
Build layered CSS shadows with inset, spread, color, and blur controls.
Developer ToolsBorder Radius Generator
Sculpt rounded corners and elliptical shapes with a live CSS preview.
Developer ToolsCSS Clamp Calculator
Calculate fluid CSS sizes from viewport endpoints with a live size chart.
Developer ToolsCSS Triangle Generator
Create directional border triangles with precise size and apex controls.
Developer ToolsFlexbox Playground
Explore flex layout, wrapping, alignment, and individual item sizing.
Developer ToolsCSS Grid Generator
Design fixed and responsive CSS grids with spans and weighted columns.
Developer ToolsCSS Animation Generator
Build keyframe animations with playback controls and reduced motion CSS.
Developer Tools