100% Client-Side
Free Online Developer Tools
A growing library of developer utilities that run entirely in your browser — no signup, no uploads, no tracking.
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Popular_Random Number GeneratorsoonQR Code GeneratorsoonCharacter CountersoonPassword GeneratorsoonJSON FormatterBase64 DecodersoonLorem Ipsum GeneratorsoonText ComparesoonBinary to Text ConvertersoonHex to Decimal Convertersoon
Full_Directory
All 87 Tools_
Every utility in the registry. Tools marked soon are on the roadmap and not yet clickable.
Formatters [13]
- JSON FormatterPrettify, validate, and minify JSON payloads instantly.
- XML FormatterPretty-print and indent XML documents.soon
- HTML FormatterReformat messy HTML with consistent indentation.soon
- CSS BeautifierExpand and re-indent minified CSS.soon
- JavaScript BeautifierReformat minified or messy JavaScript.soon
- SQL FormatterFormat SQL queries with keyword casing and indentation.soon
- YAML FormatterClean up and re-indent YAML documents.soon
- JSON MinifierStrip whitespace from JSON for transport.soon
- CSS MinifierCompress CSS by removing whitespace and comments.soon
- JavaScript MinifierShrink JavaScript by stripping whitespace and comments.soon
- HTML MinifierCompress HTML markup for smaller payloads.soon
- SQL MinifierCollapse SQL queries to a single compact line.soon
- Markdown Editor & PreviewWrite Markdown with a live rendered preview.soon
Converters [20]
- Unix Timestamp ConverterConvert epoch timestamps to readable dates and back.
- JSON to YAML ConverterConvert JSON documents to YAML.soon
- YAML to JSON ConverterConvert YAML documents to JSON.soon
- JSON to CSV ConverterFlatten JSON arrays into CSV rows.soon
- CSV to JSON ConverterTurn CSV rows into JSON objects.soon
- XML to JSON ConverterConvert XML markup to JSON.soon
- JSON to XML ConverterConvert JSON structures to XML.soon
- Markdown to HTML ConverterRender Markdown source as HTML markup.soon
- HTML to Markdown ConverterConvert HTML back to Markdown.soon
- Binary to Decimal ConverterConvert base-2 numbers to decimal.soon
- Decimal to Binary ConverterConvert decimal numbers to base-2.soon
- Hex to Decimal ConverterConvert hexadecimal values to decimal.soon
- Decimal to Hex ConverterConvert decimal numbers to hexadecimal.soon
- Binary to Text ConverterDecode binary byte sequences into text.soon
- Text to Binary ConverterEncode text as binary byte sequences.soon
- HEX to RGB ConverterConvert HEX color codes to RGB values.soon
- RGB to HEX ConverterConvert RGB values to HEX color codes.soon
- HSL to HEX ConverterConvert HSL colors to HEX codes.soon
- Byte Size ConverterConvert between bytes, KB, MB, GB, and more.soon
- Aspect Ratio CalculatorCalculate dimensions that keep an aspect ratio.soon
Encoders & Decoders [11]
- Base64 EncoderEncode text to Base64, UTF-8 safe.
- Base64 DecoderDecode Base64 back to readable text.soon
- URL EncoderPercent-encode text for safe use in URLs.soon
- URL DecoderDecode percent-encoded URL strings.soon
- JWT DecoderDecode JSON Web Tokens without sending secrets anywhere.
- HTML Entity EncoderEscape text into HTML entities.soon
- HTML Entity DecoderConvert HTML entities back to plain text.soon
- Unicode Escape/UnescapeEscape and unescape Unicode sequences.soon
- String to Hex ConverterConvert strings to hex byte values and back.soon
- ROT13 Encoder/DecoderApply the ROT13 letter-substitution cipher.soon
- Punycode ConverterConvert internationalized domains to Punycode and back.soon
Generators [17]
- UUID GeneratorGenerate cryptographically strong unique identifiers.
- Password GeneratorCreate strong random passwords with custom rules.soon
- Passphrase GeneratorGenerate memorable multi-word passphrases.soon
- Hash GeneratorCompute common hashes for any text input.soon
- MD5 Hash GeneratorCompute the MD5 hash of text.soon
- SHA256 Hash GeneratorCompute SHA-256 hashes in the browser.soon
- Bcrypt Hash GeneratorGenerate bcrypt password hashes.soon
- Lorem Ipsum GeneratorGenerate placeholder text at any length.soon
- Random Number GeneratorGenerate random numbers in a custom range.soon
- URL Slug GeneratorTurn any title into a clean URL slug.soon
- QR Code GeneratorCreate QR codes from text or URLs.soon
- Cron Expression GeneratorBuild cron expressions with a visual editor.soon
- MAC Address GeneratorGenerate random MAC addresses.soon
- Htpasswd GeneratorCreate htpasswd entries for basic auth.soon
- JWT GeneratorBuild and sign test JSON Web Tokens.soon
- Secret Key GeneratorGenerate random API keys and secrets.soon
- Fake JSON Data GeneratorGenerate fake JSON data for tests and mocks.soon
Text Tools [12]
- Diff CheckerCompare two texts and highlight differences.soon
- Regex TesterTest regular expressions against sample text live.soon
- Text Case ConverterSwitch text between upper, lower, title, and camel case.soon
- Character CounterCount characters, words, and sentences.soon
- Line CounterCount lines in any block of text.soon
- Remove Duplicate LinesDelete duplicate lines from a list.soon
- Sort Lines AlphabeticallySort lines alphabetically or numerically.soon
- Find and Replace TextFind and replace text with plain or regex matches.soon
- Whitespace RemoverStrip extra spaces, tabs, and blank lines.soon
- JSON Escape/UnescapeEscape and unescape JSON strings.soon
- JSONPath TesterQuery JSON documents with JSONPath expressions.soon
- Text CompareCompare two blocks of text side by side.soon
Web Tools [14]
- Meta Tag GeneratorGenerate SEO meta tags for any page.soon
- Open Graph GeneratorBuild Open Graph tags for rich link previews.soon
- Robots.txt GeneratorCompose a valid robots.txt file.soon
- Htaccess Redirect GeneratorGenerate .htaccess redirect rules.soon
- UTM BuilderBuild campaign URLs with UTM parameters.soon
- User Agent ParserParse user agent strings into browser and OS details.soon
- HTTP Status Codes ReferenceLook up every HTTP status code and its meaning.soon
- MIME Types LookupLook up MIME types by file extension.soon
- Chmod CalculatorConvert Unix permissions between symbolic and octal.soon
- CSS Gradient GeneratorDesign CSS gradients visually.soon
- Box Shadow GeneratorDesign CSS box shadows visually.soon
- Border Radius GeneratorPreview and tune CSS border radius.soon
- Flexbox GeneratorExperiment with flexbox layouts visually.soon
- Favicon GeneratorCreate favicons in every required size.soon
100% client-side
Every transformation runs in your browser. Nothing you paste is ever uploaded.
Free, no signup
No accounts, no paywalls, no usage limits. Open a tool and use it.
No tracking
No analytics scripts, no cookies, no ads. A utility, not a data harvest.