Dokall - Free Online Dev Tools
Dev tools that work. 52+ free utilities for developers - JSON formatter, JWT debugger, hash generator, UUID generator, proxy checker, and more. No signup required. Everything runs in your browser.
All Developer Tools
Text9
- String CaseConvert text to uppercase, lowercase, title case, and more.
- Word CounterCount words, characters, sentences, and reading time.
- Typing TestMeasure typing speed (WPM), accuracy, and skill with timed or word-count modes.
- Text Diff / CompareCompare two text blocks with character, word, or line-level highlighting.
- Line Sort / DedupeSort lines, remove duplicates, trim whitespace, and clean text lists.
- Lines to One LineConvert multi-line text into a single line with a custom separator.
- Wheel of NamesSpin the wheel to randomly pick a winner from your list of names.
- Quick NoteCreate shareable online notes with optional password protection.
- AI TranslateTranslate text between 30+ languages with Faithful, Fluid, or Creative AI styles.
JSON & Data7
- Array ToolsConvert a text list to JS, Python, PHP, Perl, SQL IN, and JSON arrays.
- JSON FormatterValidate, format, compress, and sort JSON with live error feedback.
- JSON RepairFix trailing commas, single quotes, comments, and other common JSON issues.
- JSON to CSVConvert JSON arrays and objects to CSV with custom delimiters.
- JSON to TypeScriptGenerate TypeScript interfaces from JSON with nested object support.
- JSON to C#Generate C# classes or records from JSON with Newtonsoft or System.Text.Json.
- JSON to MarkdownConvert JSON arrays to Markdown tables for docs and README files.
Code7
- JS BeautifyFormat and beautify JavaScript, CSS, and HTML code.
- SQL FormatterFormat and minify SQL with dialect support - MySQL, PostgreSQL, SQLite, and more.
- JavaScript PlaygroundRun JavaScript and TypeScript online with instant console output.
- Curl to CodeConvert cURL commands to JavaScript, Python, Go, PHP, Rust, and more.
- Run cURLTest HTTP APIs online - paste cURL or build requests and see live responses.
- Regex TesterTest regular expressions with live highlighting, capture groups, and explanations.
- Scrollbar CustomizerCustomize scrollbar colors and size, then copy the CSS.
Security8
- UUID GeneratorGenerate UUIDs in v4 (random) or v7 (time-ordered) format.
- Password GeneratorGenerate strong random passwords instantly.
- 2FA Code GeneratorGenerate TOTP 2-step verification codes from your authenticator secrets.
- Temp MailGet a disposable email address and receive messages instantly.
- Receive SMSFree temporary phone numbers from online countries worldwide.
- Random KeygenAPI keys, JWT secrets, hex keys, UUIDs, and more - click to copy.
- Hash Text (Crypto)Hash text with SHA, HMAC, hex or Base64 output, and hash comparison.
- JWT DebuggerDecode, encode, and verify JSON Web Tokens (JWT).
Image8
- Screenshot BeautifierAdd backgrounds, shadows, and frames to screenshots.
- App Icon GeneratorGenerate iOS, watchOS, macOS, and Android app icon sizes from one upload.
- Image Format ConverterConvert images between PNG, JPEG, WebP, and AVIF in your browser.
- Remove BackgroundRemove image backgrounds and download transparent PNG (beta, limited).
- Signature GeneratorDraw or type a custom signature and download as a transparent PNG.
- QR Code GeneratorQR codes for URL, WiFi, contact, vCard - colors, logo, bulk export.
- QR Code ScannerScan or upload a QR code to read its content and preview links before opening.
- Document ScannerScan or upload document photos, reorder pages, and export a PDF - all in your browser.
Converters6
- Base64 ConverterEncode and decode text to/from Base64.
- Color ConverterConvert colors between HEX, RGB, HSL, HSV, CMYK, HWB, LCH, OKLCH, LAB, XYZ, and CSS names.
- Color PalettesBrowse popular 4-color palettes and copy HEX codes instantly.
- URL EncoderEncode and decode URL strings.
- URL ParserBreak URLs into protocol, host, path, query params, and hash.
- Number Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal.
Web & Links7
- Proxy CheckerCheck a proxy list with auth - IP:PORT:USER:PASS or USER:PASS@IP:PORT.
- User-Agent GeneratorGenerate realistic random User-Agent strings for proxies, scraping, and testing.
- Download VideoDownload videos from YouTube, Facebook, Instagram, TikTok, and X (Twitter).
- What is my IP?See your public IP and network details.
- Link PreviewSee title, description, and image metadata for any public URL.
- OneLinkSmart short links that redirect to iOS, Android, or web by device.
- URL ShortenerShorten long URLs into dokall.com/l/ links with optional custom slug and QR code.
Utilities8
- Crontab ExplainerParse cron expressions with human-readable text and next run times.
- Crypto PricesLive BTC, ETH, SOL, BNB and international gold & silver spot prices.
- Meeting PlannerCompare time zones, visualize business hours, and find overlap for global calls.
- World ClockLive current time in major cities worldwide - London, New York, Hong Kong, Tokyo and more.
- Age CalculatorExact age in years, months, and days - birthday countdown, life milestones, and planetary age.
- Chmod CalculatorVisual Linux file permissions grid - octal, symbolic, and chmod command.
- Temp FileUpload a file up to 50MB, share an unguessable link, auto-delete after 24 hours.
- AI ChatAsk Dokall Assistant about our free online tools and how to use them.
Why Dokall?
Dokall is a collection of free online developer tools built for speed and simplicity. Format JSON, decode JWTs, generate UUIDs, check proxies, convert cURL to code, and much more - all without creating an account or installing software.
Every tool runs client-side in your browser whenever possible, keeping your data private. Bookmark Dokall for quick access to the dev utilities you reach for every day.