Encoding

Generate Code 128, EAN-13, UPC-A, or Code 39 barcodes from entered values with check-digit handling, quiet-zone, contrast, and label-fit checks.

Convert Base64 payloads online with standard and URL-safe encoding, decoding, padding repair, byte inspection, and Data URL output for payload debugging.

Convert online integer literals into binary, decimal, octal, hex, and Base36 with signed width, endian, byte, and bit-field checks for register audits.

Practice braille alphabet and numbers online with seeded quizzes, instant scoring, answer review, and repeatable drills for study sessions and class.

Decode certificate signing requests online to inspect subject names, SAN entries, key details, fingerprints, and warning cues before certificate issuance.

Look up online HTML entities, Unicode code points, aliases, and paste-safe forms for markup, attributes, scripts, CSS, URLs, and review handoffs.

Escape HTML text online for body, attribute, XML, or aggressive contexts with entity ledgers, validation checks, and exports for safer markup handoff.

Decode online HTML character references into readable text, inspect skipped tokens and script signals, and review decoded snippets before copying CMS or email content.

Encode online image files into Base64 text, data URLs, JSON-safe strings, embed snippets, and delivery guidance for HTML, CSS, email, or JSON/API handoff.

Check JWT claims and headers locally with profile defaults, issuer and audience matching, TTL review, replay cues, sensitive claim flags, and risk scoring.

Decode JWT header and payload claims from compact or Bearer tokens, review timing, issuer, audience, signature presence, and safety notes before verifier debugging.

Decode Morse code online from dots and dashes with custom separators, unknown-token handling, timing charts, and practice audio for study verification.

Generate Morse code online from plain text with timing, playback, and export files so you can practice copy speed or save reusable signal drafts.

Practice online Morse code recognition with seeded letter, number, and mixed quizzes, instant scoring, review charts, and exportable records for focused drills.

Convert online IDN hostnames between Unicode and Punycode, review labels, DNS length limits, URL parser behavior, and safer copy targets for DNS handoff.

Check SAML assertion timing from XML or SAMLResponse input, with clock skew, validity windows, bearer confirmation expiry, and session checks before SSO review.

Inspect online Unicode characters, graphemes, code point tokens, escapes, normalization changes, UTF byte views, and review flags for exact text debugging.

Decode online URLs and percent-encoded text, clean trackers and duplicate parameters, inspect characters and payloads, and rebuild clearer links before sharing.

Encode URLs, URL components, form values, and path fragments into safe percent-escaped output with character-level review, QR handoff, and exportable results.

Decode UUID values online into version, variant, timestamp, node, and bit-layout details for debugging storage choices, audits, and interoperability checks.