Results
Note that these test results are for released and nightly versions of the browsers tested. Versions that are still in development may provide better support for these features. The tests do not use any vendor prefixes.
Replacement
Note: the meta charset attribute was set to UTF-8 for the encoding tests in this section, since otherwise the test would not be read by the browser. The form used to create the test data has an accept-charset attribute set to the encoding we are testing, in order to create the test data in the right encoding, however that attribute doesn't appear to be recognized by Edge.
| Test link | Assertion | Detail |
|---|---|---|
| csiso2022kr encoding (form) replacement-encode-form-csiso2022kr.html |
The browser produces UTF-8 code points for miscellaneous characters using the replacement encoder for csiso2022kr. |  |
| hz-gb-2312 encoding (form) replacement-encode-form-hz-gb-2312.html |
The browser produces UTF-8 code points for miscellaneous characters using the replacement encoder for hz-gb-2312. | |
| iso-2022-cn-ext encoding (form) replacement-encode-form-iso-2022-cn-ext.html |
The browser produces UTF-8 code points for miscellaneous characters using the replacement encoder for iso-2022-cn-ext. | |
| iso-2022-cn encoding (form) replacement-encode-form-iso-2022-cn.html |
The browser produces UTF-8 code points for miscellaneous characters using the replacement encoder for iso-2022-cn. | |
| iso-2022-kr encoding (form) replacement-encode-form-iso-2022-kr.html |
The browser produces UTF-8 code points for miscellaneous characters using the replacement encoder for iso-2022-kr. | |
| Replacement encoding (form) replacement-encode-form.html |
The browser produces UTF-8 code points for miscellaneous characters using the replacement encoder. | |
Links: Section 15.1 • Related tests
| Test link | Assertion | Detail |
|---|---|---|
| csiso2022kr decoding replacement-decode-csiso2022kr.html |
If the browser tries to read an csiso2022kr file it will display a single replacement character. | |
| hz-gb-2312 decoding replacement-decode-hz-gb-2312.html |
If the browser tries to read an hz-gb-2312 file it will display a single replacement character. | |
| iso-2022-cn-ext decoding replacement-decode-iso-2022-cn-ext.html |
If the browser tries to read a iso-2022-cn-ext encoded file it will display a single replacement character. | |
| iso-2022-cn decoding replacement-decode-iso-2022-cn.html |
If the browser tries to read a iso-2022-cn encoded file it will display a single replacement character. | |
| iso-2022-kr decoding replacement-decode-iso-2022-kr.html |
If the browser tries to read an iso-2022-kr file it will display a single replacement character. | |
| replacement decoding replacement-decode.html |
If the browser tries to read a file with the declared encoding replacement it will display a single replacement character. | |
Links: Section 15.1 • Related tests
Notes
- Firefox fails most of the encoding tests because the test produces no result. (This may be a good indicator.) The same tests crash the Firefox Nightly browser.
UTF-16BE
| Test link | Assertion | Detail |
|---|---|---|
| UTF-16BE encoding (form) utf16be-encode-form.html |
The browser produces the expected byte sequences for a variety of miscellaneous characters when encoding bytes for a URL produced by a form, using the UTF-16BE encoder steps in the specification. | |
| UTF-16BE encoding (href) utf16be-encode-href.html |
The browser produces the expected byte sequences for a variety of miscellaneous characters when encoding bytes for an href attribute value, using the UTF-16BE encoder steps in the specification. | |
| UTF-16BE decoding index utf16be-decode.html |
The browser decodes miscellaneous characters as expected from a UTF-16BE file per the encoder steps in the specification. | |
Links: Section 15.3 • Related tests
Notes
- All browsers produce UTF-8 encoded percent escapes for the encoding tests.
UTF-16LE
| Test link | Assertion | Detail |
|---|---|---|
| UTF-16LE encoding (form) utf16le-encode-form.html |
The browser produces the expected byte sequences for a variety of miscellaneous characters when encoding bytes for a URL produced by a form, using the UTF-16LE encoder steps in the specification. | |
| UTF-16 encoding (form) utf16-encode-form.html |
The browser produces the expected byte sequences for a variety of miscellaneous characters when encoding bytes for a URL produced by a form, using the UTF-16 encoder steps in the specification. | |
| utf-16LE encoding (href) utf16le-encode-href.html |
The browser produces the expected byte sequences for a variety of miscellaneous characters when encoding bytes for an href attribute value, using the utf-16LE encoder steps in the specification. | |
| utf-16 encoding (href) utf16-encode-href.html |
The browser produces the expected byte sequences for a variety of miscellaneous characters when encoding bytes for an href attribute value, using the utf-16 encoder steps in the specification. | |
| UTF-16LE decoding utf16le-decode.html |
The browser decodes miscellaneous characters as expected from a UTF-16LE file per the encoder steps in the specification. | |
| UTF-16 decoding utf16-decode.html |
The browser decodes miscellaneous characters as expected from a UTF-16 file per the encoder steps in the specification. | |
Links: Section 15.4 • Related tests
Notes
- All browsers produce UTF-8 encoded percent escapes for the encoding tests.
- utf16le-decode: All browsers tested failed for 14 characters. The browsers appear to be normalizing the characters during decoding.
x-user-defined
| Test link | Assertion | Detail |
|---|---|---|
| x-user-defined encoding (form) user-encode-form.html |
When encoding as x-user-defined for a form submission, the browser produces code points in the range 0x80 to 0xFF for characters in the range U+F780 to U+F7FF, and character references for other non-ASCII characters. | |
| x-user-defined encoding (href) user-encode-href.html |
When encoding as x-user-defined for an href attribute value, the browser produces code points in the range 0x80 to 0xFF for characters in the range U+F780 to U+F7FF, and character references for other non-ASCII characters.. | |
| x-user-defined decoding errors user-decode.html |
The browser decodes characters in the range U+0080 to U+00FF as code points in the range U+F780 to U+F7FF. | |
| x-user-defined decoding errors user-decode-nonpua.html |
If the label of a UTF-8 encoded file is changed to x-user-defined, the browser decodes characters outside the range U+0000 to U+007F as a sequence of private use code points in the range U+F780 to U+F7FF. | |
Links: Section 15.5 • Related tests
Notes
- All browsers produce UTF-8 encoded percent escapes for the encoding tests.
- utf16le-decode: All browsers tested failed for 14 characters. The browsers appear to be normalizing the characters during decoding.