Libreng Developer Tools Online

I-format and beautify JSON with indentation controls.

I-validate ang JSON na may malinaw na syntax errors, root type, at size info.

Pretty-print JSON for readability.

I-minify JSON by removing whitespace.

Visually compare two JSON documents with side-by-side highlighting.

I-explore ang JSON bilang collapsible tree na may expand/collapse all.

I-convert ang CSV sa JSON na may optional type inference at pretty-print.

I-convert JSON arrays to Excel-friendly CSV with BOM and formula-safe cells.

I-encode ang text sa Base64 na may optional URL-safe (Base64URL) mode.

I-decode ang Base64 o Base64URL strings pabalik sa text.

Percent-encode para sa query values, full URIs, o form data.

I-decode ang percent-encoded URL strings (optional + as space).

Escape HTML special characters to entities.

I-decode HTML entities back to characters.

Bumuo ng UUID v4 na may format options (hyphens, case, braces).

I-decode ang JWT header at payload na may iat/exp helpers (walang verification).

Build and sign JWTs with HS256 or create unsigned tokens.

I-test ang regex na may live match highlighting at export.

I-convert between Unix timestamps and human-readable dates.

I-convert timestamps across milliseconds and seconds.

Build and explain common cron expressions.

Explain a cron expression and list the next run times nang lokal.

I-convert between YAML and JSON with pretty output.

Pagandahin XML markup with indentation controls.

I-validate XML and show clear parse errors.

Pretty-print SQL with dialect and keyword options.

Gumawa MD5, SHA-1, SHA-256, and SHA-512 hashes on one page.

I-convert .env files to JSON objects and back.

Break a URL into parts and list query parameters in a table.

I-convert between px, rem, and em with custom base sizes.

Gumawa fake API JSON for users, products, posts, and custom schemas.