Encode Decode ONLINE

Free Online Encode & Decode Tools

Encode and decode Base64, URLs, HTML entities, tokens, certificates, and other common data formats.

Encode Decode Base64 Decoder Decode standard Base64 online to UTF-8 text or inspect decoded binary bytes as hexadecimal. Encode Decode Base64 Encoder Encode UTF-8 text to standard Base64 online with optional 64- or 76-character line wrapping and canonical padding. Encode Decode Certificate Decoder Decode one X.509 PEM certificate and inspect subject, issuer, validity, SAN entries, fingerprints, serial number, signature, and key usage. Encode Decode Checksum Calculator Calculate CRC32, MD5, SHA-1, SHA-256, SHA-384, or SHA-512 checksums from exact text and compare deterministic outputs across systems. Encode Decode HTML Decoder Decode HTML entities into readable characters for content cleanup, debugging, migration, and template review Encode Decode HTML Encoder Encode reserved HTML characters into entities for safe display in examples, documentation, templates, and web content Encode Decode JSON Escape Escape quotes, backslashes, line breaks, tabs and Unicode-safe text for use inside JSON string values, API payloads and configuration files. Encode Decode JSON Unescape Decode JSON escape sequences such as escaped quotes, backslashes, newlines, tabs and Unicode sequences into readable text. Encode Decode JWT Decoder Decode JWT header and payload online, inspect alg/type and time claims, and see expiration status without pretending to verify the signature. Encode Decode PEM Formatter Format PEM certificates and keys, validate matching boundary labels, and wrap Base64 content into standard 64-character lines. Encode Decode URL Decoder Decode valid percent-encoded UTF-8 text while preserving literal plus signs for accurate URL-component inspection. Encode Decode URL Encoder Percent-encode UTF-8 text for use as one URL component while preserving JavaScript encodeURIComponent-safe characters. Encode Decode UUID Decoder Decode a UUID into version, variant, hexadecimal fields, node data, clock sequence, and timestamp information when the version supports it. Encode Decode XML Escape / Unescape XML Escape / Unescape converts reserved XML characters to safe entity references or restores standard XML entities back to readable characters.

About this category

What you can do with Encode & Decode tools

Trexmi encode and decode tools help convert data between readable and transport-safe representations. Work with Base64, URL encoding, HTML entities, tokens, certificates, and related formats while inspecting exactly what goes in and what comes out.

Encode & Decode tools help you complete focused browser-based tasks without installing a separate application or building a complicated workflow. Choose the utility that matches the job, provide the required input, review the output, and continue working immediately.

This directory brings together 14 currently available encode & decode tools in one place. Use the live search and sorting controls to compare utilities by name, purpose, popularity, or recent updates, then open the most relevant option directly from the grid.

The collection is useful for quick one-off work as well as repeatable professional tasks. Clear descriptions explain what each encode & decode tool does before you open it, helping you avoid unnecessary steps and choose a more efficient workflow.

Common workflows