Inktab
45 utilities, one tab.
Developer utilities that run in your browser. No accounts, no uploads.
- 45 tools
- 6 categories
- Browser-only
- Free
Suggested for first-timers
N°01
JSON formatterPaste · Format · Validate · Minify
Indent and validate JSON. Runs in your browser.
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12Format & convert
Browse all- N°01→JSON formatterPaste · Format · Validate · MinifyIndent and validate JSON. Runs in your browser.
- N°02→Data convertJSON · YAML · TOML · CSVRound-trip your config formats. Parse errors point to the exact line and column.
- N°03→JSON → TSInfer interfaces from samplesPaste an API response and get a TypeScript interface back, ready to drop in.
- N°04→Regex testerPatterns · options · live match previewCheck a pattern live and load common ones with a single click.
- N°05→DiffCompare two texts · line and word levelPaste two versions and see exactly where they differ, side by side.
- N°06→Text casecamel · snake · kebab · PascalConvert identifier names between every common style.
- N°07→SlugifyTitle → URL-safe stringTrim spaces, accents, and punctuation into a clean slug for a URL.
- N°08→Xlsx convertxlsx · csv · json both directionsTurn an Excel sheet into JSON or CSV — or back. Everything stays in the browser.
- N°09→cURL convertcURL one-liner to codeTake a cURL one-liner from a backend log and rewrite it as fetch, axios, or HTTPie.
- N°10→Romanize koMCT 2000 + passport conventionNames, places, brand names — one per line. See both romanizations side by side.
- N°11→JSON schemaajv validation · JSONPath queryValidate an API response against a schema, or pull a slice out of a large JSON.
- N°12→Regex visualizerRegex → tree + per-node descriptionUnfold a complex regex into a tree, with each piece explained.
05Encode & auth
Browse all- N°13→Base64Text ↔ Base64Encode UTF-8 text to Base64 and back. URL-safe mode included.
- N°14→URL encodePercent-encoding · component / uriMake any string safe to drop into a URL — encode and decode both ways.
- N°15→HashMD5 · SHA-1 · SHA-256 · SHA-512Fingerprint a string. Integrity checks, cache keys, quick IDs.
- N°16→JWT decoderHeader · payload · signaturePaste a JSON Web Token and see the claims unpacked at a glance.
- N°17→JWT signSign and verify with HS256/384/512Mint a JWT for staging-auth debugging, or verify a received token against a secret.
07Content & render
Browse all- N°18→HTML previewRender · sanitize · block XSSPreview HTML snippets inside a sandboxed iframe and get a cleaned-up version with scripts and inline handlers stripped.
- N°19→Markdown previewEditor · preview side by sidePaste Markdown and see the rendered result and the produced HTML together.
- N°20→Lorem ipsumFiller text generatorPlaceholder content for design mockups and layout testing. Latin or Hangeul.
- N°21→Text statsCharacters · words · reading timeSize up a long article, a tweet, or a newsletter draft at a glance.
- N°22→Char count platforms10 platform limits, one screenKorean resume 500 · X 280 · Instagram 2200 · Smart Store 50 · Naver title 40 byte. Live, in one place.
- N°23→HTTP status1xx–5xx · common headers401 vs 403, Cache-Control flavors, CORS preflight — answered fast.
- N°24→OG previewKakaoTalk · X · Facebook card previewCheck how seven platforms render your card before publishing. The URL is never fetched.
06Image
Browse all- N°25Image compressShrink images for web and mobile
Adjust quality for PNG, JPG, WebP. Files never leave your browser.
- N°26QR codeURL · Text · Wi-Fi
Turn text into a QR. Export to SVG or PNG, pick redundancy level.
- N°27FaviconICO · PNG · manifest · HTML
Turn a single image into the full favicon set plus a ready-to-paste HTML snippet.
- N°28Image → Data URIInline image as base64
Drop a small icon straight into your CSS or HTML and skip the extra request.
- N°29Image resizeExact pixel width and height
Instagram, X, OG, ID-photo presets. Originals stay in the browser.
- N°30EXIF stripRemove GPS and camera data
Drop photos to clear location and device metadata in one pass. Everything happens on the page.
07Color
Browse all- N°31Color paletteA tonal scale from one color
Give it a base color; get tonal, contrast, and complementary variations.
- N°32Contrast checkerWCAG AA · AAA · UI components
Measure the ratio between two colors and see every WCAG grade at a glance.
- N°33Color converthex · rgb · oklch · lab · display-p3
See one color in six formats at once — or paste a CSS file to migrate to Tailwind v4 oklch.
- N°34Color blindnessCVD simulator
Compare a palette or image across four vision types (deutan · protan · tritan · achromat) at once.
- N°35Korean colors87 traditional colors · Obangsaek search
Search the National Museum of Modern Art's Korean Traditional Standard Colors by Hangul name; copy or hand off to other color tools.
- N°36Focus ring checkFocus ring 3:1 + live preview
Confirm a keyboard focus ring stays 3:1 against both adjacent colors at once.
- N°37Image palettePhoto → N-color palette
Pull 3–12 dominant colors from a photo, illustration, or mood board.
08Misc
Browse all- N°38→Unit convertLength · Weight · Temperature · TimeEveryday unit conversions. Set decimals and units directly.
- N°39→CSS unitpx · rem · em · pt converterTranslate design-tool px into rem, or newsletter pt into px — both ways at once.
- N°40→TimestampUnix ↔ date · relative timeConvert between Unix timestamps, readable dates, and human-friendly relative time in one view.
- N°41→UUIDv4 random · v7 time-basedBulk-generate UUIDs and pick the formatting that matches your target system.
- N°42→Cron parserParse expression · preview next runsTurn a cron line into plain English and see when it will actually fire next.
- N°43→Timezone converterCompare several cities at onceSet a base time and see the local time across the cities you've added. DST and UTC offsets handled via the IANA database.
- N°44→VAT calculatorNet ↔ VAT ↔ GrossType in any of the three cells; the other two follow. Standard, simplified, or exempt.
- N°45→Biz no check10-digit checksum + type guessVerify a Korean BRN's format and checksum on the spot. Single or bulk.