Free Developer Tools — JSON, JWT, Hash, Regex, Markdown
Day-to-day developer utilities. JSON formatter with TS/CSV/YAML conversion, JWT decoder, hash generator (MD5/SHA), UUID, password generator, base64, URL encode, regex tester, markdown to HTML, SQL formatter, text diff. Everything client-side — your data never leaves your browser.
Tools (29)
Format, validate, convert to CSV/YAML/TS
Encode and decode base64 — text, files, URL-safe
Percent-encode query strings & URLs
Decode JWT header, payload & expiry
MD5, SHA-1, SHA-256, SHA-512
Generate v4 UUIDs — single or bulk to 1000
Compare two texts side-by-side, line-by-line
Strong random passwords with entropy meter
% of X, X is what % of Y, increase/decrease
Final price after % off + savings
Days between dates, age, add/subtract
Length, mass, temperature, area, volume, time, speed
HEX, RGB, HSL, HSV, CMYK + Tailwind class
Linear, radial & conic — visual builder
Visual builder — stack up to 4 shadows
Placeholder text — words, sentences, paragraphs
14 cases live — camelCase, snake_case, kebab, Title…
Anna, VTU, MU, GTU, AKTU, DU, JNTU formulas
Convert Markdown to HTML with live preview
Test JavaScript regex live with capture groups
Convert CSV ↔ JSON in your browser
Convert JSON ↔ YAML
Beautify SQL — uppercase keywords, line breaks
BMI with healthy weight range
Tip + bill split
Years, months, days — live ticking lifespan
Monthly payment, total interest, amortization
HTML email signatures with photo — copy-paste ready
Convert .xlsx sheets to CSV