Text And Dev Tools
A large set of small utilities for text and code: case conversion, formatters and validators for formats such as JSON, XML and SQL, minifiers, encoders and decoders, generators for things like .gitignore files, and converters between formats. Everything runs in your browser, so pasted code and data stay on your device.
110 free tools. All run in your browser. See the full directory.
Text & Dev 110 tools
- .env Syntax ValidatorCheck a .env file for missing quotes, stray spaces, and other syntax breaks — entirely offline.
- .gitignore generatorPick any combination of languages, frameworks, editors, and OSes — merged into one deduped .gitignore, with support for appending to an existing file.
- Acronym Generator & ExpanderGenerate an acronym from a phrase, or expand an existing acronym.
- Affiliate Disclosure Snippet InjectorAutomatically append a disclosure tag right after every affiliate link found in a pasted block of text.
- Affiliate Link Tracker BuilderPaste a base URL and toggle UTM/SubID tags to generate error-free tracking links in bulk.
- AI Prompt OrganizerSave, tag, and reuse text prompts — stored locally in your browser only.
- Base32 encoder / decoderBase32 encode/decode, alongside the existing Base64 tool.
- Base64 → File ReconstructorPaste Base64 or a data URI and get the original file back — any type, detected from its real bytes. Repairs damaged input, extracts every embedded file from JSON/CSS/HTML, previews and inspects the result, and encodes any file to Base64 too.
- Bulk Email & Link ExtractorPull only valid email addresses or URLs out of a messy pasted block of scraped text or chat logs.
- Bulk Slug GeneratorTurn a multi-line list of titles into URL-safe slugs, all at once.
- Case converterUPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, dot.case.
- Citation FormatterEnter a source's details once, get correctly formatted APA, MLA, and Chicago citations, in-text and full reference, plus a saved bibliography exportable as .txt, .bib, or .ris.
- Code BeautifierPretty-print HTML, CSS, JS, JSON, XML, YAML, SCSS, TypeScript, or GraphQL from one tool.
- Color format converterHEX ↔ RGB ↔ HSL, with a live swatch.
- Cookie / LocalStorage InspectorDrop in exported browser storage data and get a clean, editable, toggleable list instead of raw devtools JSON.
- Cron expression parserPlain-English cron schedules, 5/6/7-field auto-detect, Vixie vs Quartz dialects, timezone-aware next runs, a visual builder, and copy-as crontab/systemd/EventBridge/GCP.
- Cross-Poster Listing FormatterPaste a product description once and get platform-safe versions (length/character rules) for 5 major marketplaces.
- CSV → INSERT SQLTurn CSV rows into SQL INSERT statements for MySQL, PostgreSQL, SQLite, or SQL Server.
- CSV/XML → ChartTurn a CSV, TSV, or simple XML file into a bar, line, pie, doughnut, scatter, or radar chart — auto-detected columns, color palettes, a second-file comparison overlay, and PNG/SVG export.
- cURL ↔ fetch() converterConvert a cURL command to a JS fetch() call, or back.
- Data format converterJSON, CSV, and YAML — convert between any of the three.
- Device TestersQuick standalone testers for your mouse, keyboard, screen type, or phone vibration.
- Dice & Coin RollerBuild a dice tray — D4 to D100 or custom-sided — with notation parsing, a running total, live odds, and roll history. Flip coins too.
- Diff checkerSide-by-side or unified diff between two pieces of text.
- Docker Compose VisualizerValidate a docker-compose.yml and draw an interactive map of how its services/networks connect.
- Domain ExtractorPull the bare domain out of any URL or block of text.
- Dummy Data GeneratorGenerate realistic fake JSON/CSV test data (names, emails, addresses, etc).
- Duplicate Word FinderFind and highlight duplicate words in a block of text.
- Email Header AnalyzerTrace hops, delays and authentication results from raw headers.
- EML File ViewerView and inspect an .eml email file directly in your browser.
- Encrypt / Decrypt TextEncrypt or decrypt text with a passphrase using AES-256-GCM — entirely in your browser.
- Explain JSONTurn a JSON blob into a plain-English structural explanation.
- ExtractorsPull dates, IPs, hashes, UUIDs, JWTs out of pasted text.
- Fancy/Bold Text GeneratorTurn plain text into bold, italic, or stylized Unicode text for social bios and posts.
- Find and ReplaceFind and replace text, with regex support.
- Google Drive Direct-Download Link GeneratorTurn a shared Google Drive link into a direct-download link.
- HAR File ViewerWaterfall, timings and request inspector.
- HAR SanitizerStrip cookies, tokens and PII from HAR files before sharing.
- Hash generatorMD5, SHA-1, SHA-256, SHA-384, and SHA-512 for text or a file.
- HTML / CSS / JS minifierMinify or beautify HTML, CSS, and JavaScript — two-way, with byte-savings stats.
- HTML EditorWrite HTML with a live rendered preview.
- HTML → Plain Text StripperStrip nav, footer, script, and style tags from copied HTML, leaving just the readable title and paragraph text.
- Invoice GeneratorFill out a professional invoice — logo, line items, discounts, multiple taxes, a paid/overdue stamp, and a reusable sender template — then export as a PDF.
- IP subnet / CIDR calculatorSubnet mask, host range, and broadcast address from a CIDR block.
- JSON diffStructural JSON diff — positional or key-matched array comparison, ignore-path globs, a visual tree, and JSON Patch (RFC 6902) export. Large docs diff in a background worker.
- JSON formatterPretty-print, minify, validate with exact error location, flag duplicate keys, and auto-repair common mistakes.
- JSON Schema ValidatorValidate JSON against a schema with line-level errors.
- JSON → Table ConverterTurn a JSON array into a readable table.
- JSON → TypeScript Interface GeneratorPaste a raw JSON response and get a matching TypeScript interface generated instantly.
- JSON → XML TranslatorConvert a JSON API response into valid nested XML for legacy systems that require it.
- JSON-LD Schema GeneratorArticle, product, FAQ, local business and more.
- JSONPath TesterRun JSONPath queries live with highlighted matches.
- JWT Builder & SignerCreate and sign HS256, RS256 and ES256 tokens locally.
- JWT decoderBreak a JWT down into header, payload, and signature.
- Line ToolsAdd a prefix/suffix to each line, filter lines by content (plain text or regex), or repeat text across lines — with live preview, saved drafts, and file import.
- Log AnalyzerPaste raw logs and get error counts, recurring patterns, and a timeline breakdown.
- Lorem ipsum generatorPlaceholder text by paragraph, sentence, or word count.
- MAC Address GeneratorGenerate MAC addresses in bulk from a quantity and prefix.
- Markdown editor & viewerSplit-pane markdown editor with a live rendered preview — export as PDF or standalone HTML.
- Markdown table generatorSpreadsheet-style grid editor with per-column alignment, paste-to-import from CSV/TSV or existing markdown tables, keyboard navigation, live preview, and auto-width padded raw output.
- Markdown Table → JSON ConverterConvert a Markdown table back into a clean JSON array of objects.
- Markdown → Slides GeneratorType bulleted Markdown notes and get a rendered, minimalist slideshow you can export as a PDF.
- Mermaid Diagram EditorLive Mermaid editing with SVG and PNG export.
- Morse Code ConverterConvert text to Morse code and back, with audio playback.
- Novelty Generator BundleName generators (Xbox Gamertag, Japanese Username, Business Identity, etc.), non-jailbreak AI prompt generators, flag maker, random anime character/phone number, quotation generator, cross-sum & vanity-number calculators, interactive analog clock, random letter/emoji generators, glitch text generator.
- Number base converterDecimal, hex, binary, octal — type in any, see the rest.
- Number to Roman NumeralsConvert numbers to Roman numerals and back.
- Numbers to Words ConverterConvert a number into its written-out word form.
- OG / social preview checker & generatorPaste a page's HTML, opt in to fetch a live URL, or start from scratch with nothing — preview the link card on 9 platforms, catch missing tags and truncation, generate a starter JSON-LD block, then export a ready-to-paste <head> snippet.
- OKLCH color picker & converterEdit L/C/H with live HEX/RGB/HSL/LAB/LCH conversion, a gamut-clipped fallback preview, a WCAG-scored shade palette generator, a hue-harmony generator, and a perceptually-even gradient builder.
- OpenAPI ViewerBrowse Swagger and OpenAPI specs offline.
- Password generator & strength checkerGenerate random passwords or passphrases, or check an existing password's real crack time — pattern-aware, not just a character count.
- Phone Parser & FormatterParse and format a phone number, with country code and type detection.
- QR code generatorURL, text, email, phone, SMS, WiFi, contact card, or location — into a QR code with custom colors, dot styles, an optional logo, and batch CSV export.
- Random Color GeneratorGenerate a random color with one click.
- Random Name / Raffle PickerSpin a wheel to draw a random name — weighted entries (extra tickets), auto-remove winner, a second wheel for picking a prize alongside a name, shuffle/sort, and a full spin history.
- README Badge GeneratorPick from build/license/version/tech-stack badges, get the ready-to-paste shields.io Markdown.
- Regex testerLive match highlighting and capture groups as you type a pattern.
- Regex → Plain English TranslatorPaste a regex pattern and get a plain-English breakdown of what it matches, alongside a live tester.
- Review Text AnalyzerPaste competitor reviews and get a frequency breakdown of common complaint keywords.
- Rich Text / HTML → MarkdownPaste formatted text or HTML, get clean Markdown.
- Sentence RewriterLocal thesaurus-based synonym swap for a sentence or paragraph — a lighter, offline alternative to AI paraphrasing tools.
- Share Link GeneratorBuild a pre-filled WhatsApp, email, SMS, or add-to-calendar link to share or embed.
- Simple Text Editor / NotesCreate and manage multiple text notes with auto-save.
- Slug generatorTurn a title into a URL-safe slug.
- SPF, DKIM & DMARC GeneratorBuild and explain mail authentication DNS records.
- Spin the WheelAdd options, spin an animated wheel to pick one at random — giveaways, decisions, raffles.
- SQL formatterPretty-print messy SQL across 19 dialects, catch a few common mistakes, and export it as JS/Python/JSON strings.
- SQL Schema Diff CheckerCompare two SQL export structures and highlight exactly which tables/columns/keys changed.
- SQL Schema → ER DiagramPaste a CREATE TABLE dump and get a visual entity-relationship diagram — tables, columns, and foreign-key links.
- SQL → Markdown Table GeneratorTurn a table structure or query result into a clean Markdown table for READMEs and docs.
- SSH Key GeneratorEd25519 and RSA key pairs created with WebCrypto.
- SVG Code Optimizer & MinifierStrip editor comments, empty paths, and excess decimal precision from SVG markup — often 60% smaller.
- SVG ExtractorPull inline SVG code out of a pasted webpage or markup block.
- SVG → CSS ConverterConvert an SVG into a CSS background-image data URI.
- Tally CounterA simple click counter with presets, resettable and rememberable.
- Text Cleanup ToolkitRemove extra spaces, punctuation, or emojis, reverse text, or wrap lines — one tool, several one-click cleanups.
- Text encoder / decoderBase64, URL, and HTML entities — encode or decode.
- Text Pixel Width CalculatorMeasure how wide a string renders at a given font/size/weight, in single or batch mode, with live bars against common Google title/description pixel guides.
- Timestamp converterUnix timestamp ↔ human-readable date, local or UTC.
- Token GeneratorGenerate random strings/tokens with your choice of character sets and length.
- URL Parser & BuilderBreak a URL into parts and rebuild it with encoded parameters.
- User-agent parserBreak a UA string into browser/OS/device, spot bots, parse Client Hints, batch-parse, compare, or generate one.
- UUID generatorBulk-generate UUIDs/GUIDs.
- Webhook Payload SandboxPaste a big JSON payload and get a navigable visual tree with quick filtering for error codes/status fields.
- Wi-Fi QR GeneratorQR codes that join a network in one scan.
- Word / character counterLive word/char counts, reading & speaking time, sentence/paragraph breakdown, top keywords, and live bars against real platform limits (X, SMS, meta description, title tag, Instagram, YouTube).
- X.509 Certificate DecoderDecode certificates and CSRs into readable fields.
- XML Formatter & ValidatorPretty-print, minify and validate XML.
- YAML Validator & FormatterValidate, format and convert YAML.