π» Developer Tools
44 free online tools for developers β format, convert, encode, decode, generate CSS, and test right in your browser.
JSON Formatter
Pretty-print and validate JSON with clear error messages.
JSON Minifier
Compress JSON by removing all unnecessary whitespace.
JSON to CSV
Convert an array of JSON objects into CSV format.
CSV to JSON
Convert CSV data into a clean JSON array of objects.
Base64 Encoder
Encode text to Base64 with full Unicode support.
Base64 Decoder
Decode Base64 strings back into readable text.
URL Encoder
Percent-encode text for safe use in URLs.
URL Decoder
Decode percent-encoded URL strings into plain text.
HTML Encoder
Escape HTML special characters into safe entities.
HTML Decoder
Convert HTML entities back into their characters.
JWT Decoder
Decode JWT header and payload without verifying.
UUID Generator
Generate random v4 UUIDs, up to 100 at a time.
Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
HTML Minifier
Strip comments and whitespace to shrink HTML.
CSS Minifier
Remove comments and whitespace from CSS code.
JS Minifier
Basic JavaScript minifier that strips comments and gaps.
Regex Tester
Test regular expressions and inspect capture groups.
Timestamp Converter
Convert Unix timestamps to and from human dates.
Number Base Converter
Convert between binary, octal, decimal and hex.
ASCII Converter
Convert text to ASCII codes and back again.
JSON to YAML
Convert JSON to YAML and YAML to JSON.
CSV to Excel
Convert CSV to Excel (XLSX) and back.
Markdown to HTML
Convert Markdown to HTML with a live preview.
Cron Expression Generator
Build cron schedules with a plain-English explanation.
Blogger Template Converter
Escape HTML/JS/CSS into Blogger-safe code.
JSON Reader
Explore JSON as a collapsible tree.
CSV Reader
View CSV as a searchable, sortable table.
Parquet Reader
Open Apache Parquet files and view rows.
XML to JSON Converter
Convert XML data to JSON format instantly.
YAML to JSON Converter
Convert between YAML and JSON formats.
HTML to Markdown Converter
Convert HTML markup into clean Markdown.
Box Shadow Generator
Create beautiful CSS box shadows visually.
Border Radius Generator
Generate CSS border-radius with live preview.
Text Shadow Generator
Create text shadows with real-time preview.
Glassmorphism Generator
Generate modern glass morphism CSS effects.
Neumorphism Generator
Create soft UI neumorphic design styles.
CSS Grid Generator
Build CSS Grid layouts with visual controls.
Flexbox Playground
Interactive flexbox layout testing tool.
CSS Clip Path Generator
Create custom CSS clip-path shapes easily.
SQL Formatter
Beautify and format SQL queries with ease.
HTTP Status Codes
Searchable reference of all HTTP status codes.
SVG Wave Generator
Generate animated SVG wave patterns.
Font Pair Previewer
Preview and test Google Font combinations.
Barcode Generator
Generate barcodes in multiple formats instantly.
Developer Tools
Our free developer tools run entirely in your browser, so your data never leaves your device. Format and validate JSON, convert between data formats, encode and decode Base64, URLs, HTML and JWTs, generate UUIDs and cryptographic hashes, minify your front-end code, test regular expressions, create CSS effects with visual generators, format SQL queries, and much more all in one place. Each tool is fast, private, and requires no signup.