Decode copied API values
Inspect Base64 values, URL-encoded values, and copied token payloads without sending pasted data to a remote decoder.
Encoding
Encoding and Decoding Tools
Encoding tools help convert text into transport-safe formats, decode stored values, and generate hashes for checksums or fingerprints without sending data to a server.
Related tools
Base64 Encoder and Decoder Online | UTF-8 and URL-Safe Text
Encode or decode Base64 text with UTF-8 support and local-only processing.
Open toolURL Encoder and Decoder Online | Query String Percent Encoding
Encode or decode query strings, redirects, and URL components locally.
Open toolHash Generator Online | MD5, SHA-256 and SHA-512 Checksums
Generate MD5, SHA-1, SHA-256, and SHA-512 checksums locally.
Open toolHTTP Header Parser | Inspect Request & Response Headers
Parse raw HTTP request or response headers into grouped, normalized debugging output.
Open toolCharacter Set Detector Online | Check File Encoding and BOM
Check file encoding, UTF-8/UTF-16 hints, ASCII, and BOM presence locally in your browser.
Open toolWorkflow guides
Related workflow guides
Use these guides when you need a concrete workflow before opening a tool.
Format JSON for API debugging
Learn how to format, validate, and inspect API JSON responses so missing commas, wrong nesting, and invalid payloads are easier to find.
Read guideDecode a JWT safely before debugging authentication
Learn how to inspect JWT headers and payload claims without treating decoded tokens as verified or sharing secrets by accident.
Read guideBase64 decode an API payload
Learn how to decode Base64 API fields, inspect UTF-8 text safely, and avoid confusing encoding with encryption.
Read guideConvert CSV to JSON for spreadsheet data cleanup
Learn how to convert spreadsheet CSV exports into JSON while checking headers, delimiters, empty cells, and nested-looking values.
Read guideTool selection guide
Which encoding tool should I use?
| Tool | Best for |
|---|---|
| Base64 Encoder and Decoder Online | UTF-8 and URL-Safe Text | Use it for text-safe payloads in JSON, APIs, Data URIs, and debugging. |
| URL Encoder and Decoder Online | Query String Percent Encoding | Use it for query parameters, nested redirect URLs, and percent-encoded UTF-8 text. |
| Hash Generator Online | MD5, SHA-256 and SHA-512 Checksums | Use it for checksums, content fingerprints, and non-password integrity checks. |
| Character Set Detector Online | Check File Encoding and BOM | Use it before importing CSVs, logs, or exports that may have mojibake or unknown encoding. |
| HTTP Header Parser | Inspect Request & Response Headers | Use it with URL decoding and token inspection when copied API responses need local debugging. |
Recommended workflows
Encoding workflows for common developer jobs
Choose the encoding task first, then move through the tools that usually appear together in API, URL, and integrity checks.
Debug encoded API responses
Parse copied response headers, decode encoded URL values, then hash payloads when an API log or CDN trace needs a local integrity check.
Build safe URLs and share links
Encode only the values that need escaping, then turn the final URL into a QR code when the link needs to be shared.
Fix file encoding before import
Detect the source encoding, validate the converted JSON when needed, then convert CSV and JSON samples before importing files.
Verify content identity
Generate hashes, compare copied payloads, and create UUIDs for local test records or fixtures.
FAQ
Common questions about this category
Which encoding or decoding tool should I start with?
Start with Base64 Encoder and Decoder for copied tokens, JSON fields, and Data URI text. Start with URL Encoder and Decoder for query strings, redirect URLs, and percent-encoded UTF-8 values.
Is encoding the same as encryption?
No. Encoding changes how data is represented so it can move through URLs, JSON, HTML, or APIs. It is reversible and should not be used to protect passwords, secrets, or private tokens.
When should I use the hash generator in an encoding workflow?
Use the hash generator when you need a checksum, fingerprint, or local integrity check after decoding or normalizing content. It is useful for comparing copied payloads, files, logs, and API examples.
Are pasted encoded values uploaded to a server?
The listed encoding workflows are intended to run in your browser, so pasted values can be decoded, encoded, or hashed locally. Avoid pasting production secrets unless you are allowed to inspect them.