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ATTRIBUTION.toml: kept main's sha; rehashed after all merges. ROADMAP.md: both progress-log lines, newest first. docs/localization-parity.md: the PR's status line; both revision rows, newest first. docs/roadmap.md: the PR's rows (main's rows plus the PR's wording).
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Localization parity
Last reviewed: 2026-10-10 · Last updated: 2026-10-13 · Change: minor (Vietnamese 100% of current key union; native-speaker community review; twelve-language mean ≈68%) · Target: Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS) Last reviewed: 2026-10-21 · Last updated: 2026-10-21 · Change: minor (Brazilian Portuguese now covers the 2,674-key catalog union; twelve-language mean still rounds to ≈68%) · Target: Adobe Acrobat Pro (Acrobat DC, continuous track 26.002.21931, macOS)
Per-language status of PdfCraft's interface against Acrobat Pro's. How translations work and how to add a language: localization.md. Summary in ROADMAP.md.
How this was measured
- Strings translated is measured: the catalogs in
crates/ui-egui/src/i18n/<code>.tsv, counted as distinct(context, English)keys with a non-empty translation. The current denominator is the union of keys across all catalogs (2,674 distinct keys as of 2026-10-21, including language-specific context rows such as Vietnamesetheme/Appearance). The twelve-language percentage table below still quotes the historical 2,143-key snapshot from 2026-10-10 except for Vietnamese and Brazilian Portuguese (measured against the current union). English is built in. - Not counted: error details from the engine and the operating system, which are shown in English inside a translated frame; there is no translated user documentation or help yet (Acrobat ships localized help).
- Script support comes from localization.md, the vendored winit IME patches
(
vendor/README.md) and user reports. - Native review: "community" means a native speaker contributed or corrected the catalog in a pull request or issue; "no" means no record of review. No catalog has had a formal review.
- Acrobat ships 24 interface localizations on macOS (
.lproj: cs, da, de, en, es, fi, fr, hu, it, ja, ko, nl, no, pl, pt, ru, sv, tr, uk, zh_CN, zh_TW, plus en_AE, en_IL, fr_MA) and Middle East / North Africa editions (MEA Arabic, MEH Hebrew, NAF French;Resources/Sequences/).
The twelve key languages
| Language | Code | UI strings translated | Dialogs / tooltips / help | Script support | Native review | Status | Acrobat ships it | To full (h) |
|---|---|---|---|---|---|---|---|---|
| English | en |
built in (100%) | all; README and docs | Latin | yes | full | yes | 0 |
| Simplified Chinese | zh-hans |
2,088 (97.4%) | dialogs and tooltips through tl!; no help |
CJK text and IME work, but release builds have no Hans face: many characters show as boxes (#826, #688, #728, #758; Flatpak #689) | no | partial | yes | 6–12 |
| Spanish | es |
2,046 (95.5%) | dialogs and tooltips; no help | Latin | no | partial | yes | 2–4 |
| Hindi | hi |
0 | none | Devanagari not tested (egui shapes Telugu conjuncts, so shaping is likely workable); no Devanagari face in craft-fonts | no | none | no | 10–18 |
| Arabic | ar |
2,143 (100%) | dialogs and tooltips; no help | Letters joined and lines reordered at load, but layout not mirrored, wrapped lines break at the wrong end, typed text runs left to right (localization.md §Arabic) |
no | partial | yes (Middle East edition) | 25–45 |
| French | fr |
2,128 (99.3%) | dialogs and tooltips; no help | Latin | no | partial | yes | 1–2 |
| Portuguese (Brazil) | pt-br |
2,674 (100% of current union) | dialogs and tooltips; no help | Latin | community (#288) | partial | yes | 1–2 |
| Indonesian | id |
0 | none | Latin | no | none | no | 3–5 |
| Japanese | ja |
2,123 (99.1%) | dialogs and tooltips; no help | BIZ UDPGothic from craft-fonts; IME patched on macOS, Windows, X11, Wayland; vertical text renders but can't be edited | no | partial | yes | 4–8 |
| German | de |
2,128 (99.3%) | dialogs and tooltips; no help | Latin | community, in progress (#828: terminology, clipping) | partial | yes | 2–4 |
| Korean | ko |
0 | none | Hangul IME patched (Microsoft and Apple Korean, vendor/README.md winit 3, 6, 9, 10); no Hangul UI face in craft-fonts |
no | none | yes | 6–10 |
| Vietnamese | vi |
2,674 (100% of current union) | dialogs and tooltips; no help | Latin with stacked diacritics; bundled Inter covers them (fonts test) | community | partial | no | 2–4 |
Localization dimension ≈ 68%: the mean over the twelve, counting a catalog's percentage but only
60% for Chinese and Arabic until their script problems are fixed, and 0 for Hindi, Indonesian and
Korean (still missing). Vietnamese moved from 0% to 100% in that mean (59% → 68%). ≈ 55–110 h
to bring all twelve to full, of which ≈ 35–60 h is engineering (Hans face, RTL layout, bidi text)
and the rest catalogs and fixes; native-speaker review needs humans.
No language is full except English: every catalog leaves engine error details in English, and
none has translated help. Vietnamese's To full hours are therefore residual help/docs polish
(catalog and script work are already done), not missing UI strings.
Other shipped languages
| Language | Code | UI strings translated | Status | Acrobat ships it |
|---|---|---|---|---|
| Traditional Chinese | zh-hant |
2,016 (94.1%) | partial (same Hans/Hant face caveat) | yes |
| Russian | ru |
2,043 (95.3%) | partial | yes |
| Bulgarian | bg |
2,094 (97.7%) | partial | no |
| Czech | cs |
2,674 entries (every key of the other catalogs, the engine's sentences, weekdays and certificate fields) | partial | yes |
| Telugu | te |
2,058 (96.0%) | partial (the release-pinned craft-fonts has no Telugu face yet) | no |
| Hungarian | hu |
2,126 (99.2%) | partial | yes |
| Ukrainian | uk |
2,142 (100%) | partial | yes |
| Italian | it |
2,528 entries (every key of the other catalogs that the code looks up) | partial | yes |
| Kazakh | kk |
2,327 entries | partial | no |
| Polish | pl |
2,287 entries | partial | yes |
| Slovenian | sl |
2,324 entries | partial | no |
| Greek | el |
2,341 entries | partial | no |
| Turkish | tr |
2,313 entries | partial | yes |
| Lithuanian | lt |
2,585 entries | partial; community native-speaker review (#1401) | no |
| Finnish | fi |
2,674 entries | partial; AI-assisted, native proofreading pending | yes |
15 other languages ship (23 catalogs plus English = 24 interface languages in Preferences). The entry counts without percentages were measured on 2026-10-12–13; they are not percentages of the older 2,143-key snapshot above. Their presence does not imply a detailed linguistic or runtime review. Acrobat languages PdfCraft lacks: Danish, Dutch, Norwegian, Swedish, Hebrew. Vietnamese is shipped here but not by Acrobat.
Revision history
| Date | Change | Summary |
|---|---|---|
| 2026-10-21 | minor | Brazilian Portuguese (pt-br) now covers all 2,674 distinct keys in the current catalog union; no help or engine/OS error-detail localization; twelve-language mean still rounds to ≈ 68% |
| 2026-10-16 | minor | Czech: 2,674 entries after adding the keys the other catalogs had (the engine's sentences, weekday heads, certificate fields, shared buttons) and unifying "tag" as tag (not značka, which is a redaction mark) |
| 2026-10-13 | minor | Vietnamese (vi) catalog: 2,591 entries (100% of current key union + theme/Appearance); twelve-language mean ≈ 68%; native-speaker community review; registered with plural_none |
| 2026-10-14 | minor | Italian: 2,528 entries after adding the 201 keys the other catalogs had and the code looks up |
| 2026-10-14 | minor | Added Finnish (2,674 entries, AI-assisted) |
| 2026-10-12 | minor | Added current counts for Kazakh, Polish, Slovenian, Greek, Turkish and Lithuanian; retained existing language assessments and the original percentage snapshot |
| 2026-10-10 | major | Created. Catalog counts measured from crates/ui-egui/src/i18n/*.tsv against the 2,143-key union; Acrobat's localizations from its bundle's .lproj and Sequences folder names |