RTL Layout Sanity Checks After AI Translation:
(Arabic, Hebrew, Persian)
Translating strings into Arabic, Hebrew, or Persian flips reading direction for prose, yet your stack still injects left-to-right islands: SKUs, card numbers, coupon codes, URLs, Latin brand names, and WooCommerce price formats. A fluent sentence in the PO file can still render with stray punctuation, mirrored icons, or numerals grouped in the wrong order if nobody runs layout sanity checks after bulk gettext work. This guide is a practical QA pass for store owners and agencies who ship RTL locales without dedicating a full-time typesetting specialist.
Updated 2026
Bidirectional UX

Correct translation is only half the battle. The other half is how the browser orders characters when Latin fragments sit inside RTL sentences, how flexbox and grid honor direction on cart rows, and how emails hard-wrap long strings. Automated gettext fills accelerate coverage; they also accelerate the moment a misplaced parenthesis or a reversed question mark becomes visible to every customer. Treat RTL QA as release engineering, not as an optional polish pass.
Loco shows msgstr values in isolation. The live page composes them with icons, badges, timers, and payment logos. A string that looked fine in the editor can collide with a theme margin that assumed LTR-only spacing. Your checklist must span devices, browsers, and the specific WooCommerce templates your extensions override.
Caching layers hide stale MO files during QA. Purge opcode cache, clear page cache, and verify `load_textdomain` timing if you use custom drop-ins. Nothing frustrates a bilingual reviewer faster than proving a fix in Loco while the storefront still serves yesterday’s compiled binary from a CDN edge node.
Workflows that pair Loco with assists benefit from Loco AI Auto Translator gettext assists with RTL-safe prompts for Arabic Hebrew and Persian WooCommerce strings so bulk fills avoid punctuation and placeholder patterns that fight Unicode bidirectional rules.
Translation correctness versus layout correctness
Linguistic QA asks whether vocabulary, register, and grammar fit the audience. Layout QA asks whether the same bytes produce readable output when the CSS direction is rtl, when a mini-cart animates from the logical start edge, and when WooCommerce injects inline SVG icons beside labels. Both layers can pass independently. A reviewer who only reads PO rows will miss icon mirroring that makes arrows point the wrong way on sliders or carousels.
Hebrew and Arabic stack contexts differ from Persian: script shaping, numeral preferences, and calendar copy all influence what “looks correct” to native readers. Your checklist should name the primary market. A Gulf Arabic storefront may prefer Western digits in prices while body copy stays Arabic script; a Persian site might expect Eastern Arabic-Indic numerals in some banners but Western digits on payment terminals. Document those choices instead of assuming gettext defaults will align every plugin.
Open the string on a phone with the real theme, real payment gateway badges, and a product that includes Latin characters in the title. Synthetic titles hide wrapping bugs.
RTL line breaking plus long compound words in Persian or concatenated Arabic prepositions exaggerates overflow. Checkout and cart breakpoints are where embarrassment becomes lost revenue.
The W3C guidance on marking text direction in HTML is the canonical reference when engineers argue about dir attributes versus CSS alone. Share it with theme developers when you file tickets about components that hard-code left margins.
wp-admin itself is predominantly LTR even when the storefront locale is RTL. Strings that appear in both contexts inherit different surrounding directionality. A label that reads cleanly above a product table in the shop may look cramped beside a meta box in Arabic wp-admin because the container never flipped. When QA reports an issue, capture whether it reproduces on the front end, the back end, or both; the fix path differs. Multisite networks compound this: one site may run English admin for operators while shoppers see Persian, so never assume the user profile language matches the public locale.
Mixed-direction islands inside translated sentences
Commerce strings routinely embed LTR fragments. A Persian sentence might wrap an English coupon code. An Arabic notice might cite a Latin SKU. Unicode bidirectional algorithm rules reorder those fragments, sometimes unexpectedly, when punctuation sits on boundaries. Question marks, colons, and parentheses are frequent troublemakers: they can attach to the wrong directional run and appear to “float” away from the word they qualify.
| Pattern | Typical symptom | First response |
|---|---|---|
| SKU or code inside RTL prose | Digits reorder visually | Wrap in isolates or mark as LTR per Unicode best practice. |
| Email or URL at sentence end | Full stop jumps inline | Separate with neutral space; avoid glued punctuation. |
| Placeholder + Latin brand | Mirrored parentheses in admin | Verify source uses paired punctuation; retest after sprintf. |
| Phone numbers | Directional marks break grouping | Use locale-aware formatting in templates, not prose hacks. |
The MDN documentation for the CSS direction property helps front-end reviewers understand how inheritance interacts with WooCommerce wrappers. It does not replace native-speaker proofreading, but it aligns engineering vocabulary.
Logical properties (`margin-inline-start` instead of `margin-left`) reduce RTL defects because they track the writing mode. Legacy themes that still emit physical left and right rules will keep producing uneven spacing until someone refactors the stylesheet. gettext cannot repair that class of bug; flag it during RTL QA so CSS work queues in parallel with translation work instead of after launch.
WooCommerce prices, totals, and tax lines under RTL
Currency symbols and negative amounts have strong LTR habits. Many themes align totals using physical left and right padding that looked fine in English but crowds the symbol against the edge in RTL. After translating gettext, walk the cart and order-received screens with a basket containing discounts, tax rows, and shipping. Confirm minus signs stay attached to amounts and that “inclusive” or “exclusive” labels remain adjacent to the figures they describe.
Gateways append short phrases next to card fields. If those strings mix RTL labels with Latin card brand icons, verify focus outlines and error messages do not jump across columns on small screens. Payment plugins that inject iframes may ignore your theme direction; note those exceptions explicitly in QA docs so nobody blames gettext for third-party walls.
Subscription and membership extensions often surface renewal dates with Latin month abbreviations inside RTL sentences. Confirm the abbreviation cluster stays grouped and that time zones display next to numerals without stray colons drifting across runs. Small punctuation defects there erode trust because money feels more abstract than a tangible product photo.
Never “fix” a bidi display bug by inserting invisible characters into msgstr without recording why. Future bulk jobs will strip or relocate them. Fix structure in markup or isolates with engineering oversight.
Nexu WP Loco AI Auto Translator with system prompts forbidding risky punctuation around WooCommerce printf placeholders in RTL locales reduces accidental marks that look fine in the PO editor but reorder oddly on the live cart.
Encoding policy in prompts, settings, and glossary rows
Default prompts should tell assists to preserve placeholders, avoid decorative Latin quotes around RTL clauses unless the English source used them, and to leave brand tokens and codes inside logical order. Bundle-level prompts for Arabic locales can add numeral policy and diacritics guidance if your brand requires full vocalization in headings but omits it in compact UI.


Glossary rows should mark which Latin fragments must remain LTR and whether numerals in a phrase follow customer expectations. Fixed translations for tax labels help alignment because finance wording stays stable while marketing copy flexes.
The WordPress Theme Handbook chapter on internationalization reminds theme authors to avoid hard-coded physical alignment. When vendors ignore that guidance, your gettext work cannot fix margin bugs; escalate with screenshots from RTL locales.
Bulk fills: sample early, sample often
Large batches should not run to completion without intermediate RTL sampling. After the first few hundred strings, compile MO, reload staging, and click through cart and account. Early sampling catches systematic mistakes such as assists inserting Latin quotation marks that break bidi, or doubling spaces that push wrapping thresholds on mobile.
Segment jobs by risk tier: start with domains that touch navigation and cart totals, then tackle long-tail admin strings. Low-risk help text can wait for a second pass with lighter sampling. That ordering minimizes the chance that a glamorous but low-impact domain consumes review hours while checkout still carries a punctuation defect.

WordPress Loco AI Auto Translator batch gettext workflows with phased RTL verification for Arabic Hebrew Persian storefronts pair naturally with ticketing: each milestone attaches screenshots from at least one Android Chrome session and one Safari iOS session.
Per-string rescue when only one notice misbehaves
Localized admin notices sometimes combine RTL body copy with English error codes. If a single msgstr introduces punctuation that mirrors incorrectly beside a gateway reference, fix that row in isolation, document the pattern, and scan for sister strings before assuming the theme is at fault.

Screen readers expose directionality bugs that sighted reviewers miss. Run VoiceOver or TalkBack through checkout once per major release. Focus order should follow logical flow, not visual hacks from rushed CSS.
Search, filters, and admin lists under RTL stress
Product filters, attribute chips, and search suggestions combine short labels with counts in parentheses. Under RTL, a chip might need the count on the logical start or end depending on brand style. WooCommerce admin order lists interleave status badges with customer names; if a Latin email sits inside an Arabic row, confirm the badge does not overlap the address when the viewport narrows. These defects rarely appear in PO editors because the msgid lacked the adjacent HTML structure.
Site search overlays that animate from a physical corner may feel wrong in RTL even when strings are perfect. Note cosmetic animation issues separately from translation defects so developers prioritize payment flows first, but keep them on the backlog because they shape perceived polish.
Third-party recommendation widgets and review aggregators often inject English microcopy beside star ratings. Decide whether those fragments should stay English, receive manual translation in their own vendor console, or remain hidden in RTL locales. gettext alone cannot harmonize SaaS embeds that bypass WordPress entirely.
Emails, PDFs, and printouts
Transactional email HTML often inherits a different stylesheet than the theme. Test RTL there with real line items, long product titles mixing scripts, and addresses in Latin characters. PDF invoices generated by extensions may embed fonts that lack Arabic shaping; that is a font stack problem, not a gettext problem, but customers still blame the translation team if glyphs box out.
Dark mode email clients add another variable: some invert backgrounds while leaving embedded product images untouched, which changes perceived contrast around RTL copy beside white JPEGs. Snapshot tests in at least one webmail client and one native client per release cycle.
Print CSS and “open in browser” flows deserve one checklist item each. Hebrew packaging slips sometimes need explicit LTR blocks for tracking numbers even when the surrounding template is rtl.
Providers, turbo jobs, and keeping RTL policy portable
Switching translation endpoints can change punctuation habits even when glossary facts stay fixed. Re-run a compact RTL golden panel after any provider change. Export prompts with releases so staging and production apply the same bidi rules.
Agencies should hand clients a one-page RTL playbook listing fonts, numeral policy, and the exact device matrix used during acceptance. When clients later run their own bulk jobs without that playbook, layout regressions return and finger-pointing begins. Version the playbook alongside MO exports so everyone references the same ruleset.

Homepage hero, product grid, single product, cart, checkout, order received, My Account orders, lost password, and one failed-payment path. For each: portrait phone, landscape tablet, desktop. Capture one screenshot per critical defect with URL, locale, text domain, and browser version noted so engineers can reproduce bidi issues that only appear in WebKit or Chromium.
The Unicode Bidirectional Algorithm specification (UAX #9) is dense reading, yet linking it in engineering tickets signals you expect root-cause fixes instead of one-off msgstr hacks.
Finally, schedule a quarterly regression day on slow connections. RTL layouts that reflow late can flash LTR-aligned text for a frame while web fonts load, which looks like a translation bug to shoppers even when gettext is innocent. Recording a short screen capture on 3G throttling often reveals whether you need font-display swaps or skeleton placeholders rather than another PO edit. Share those clips with theme authors instead of opening duplicate gettext tickets. Consistent visual evidence shortens review cycles for everyone involved on both vendor and client sides.
RTL layout QA is the practical bridge between correct words and trustworthy commerce. Skipping it turns fluent catalogs into very fragile ones where every plugin update rolls dice on punctuation and numerals. Bake the checklist into releases, and your Arabic, Hebrew, and Persian shoppers stop paying the hidden tax for rushed launches.
Seasonal campaigns and countdown banners stress mixed-direction layouts because Latin numerals inside Arabic marketing copy appear in every hero slider. Re-run the checklist when marketing swaps creative, not only when engineering ships code. A single new banner string can reintroduce a bidi edge case you solved months ago.
Legal footers that mix Arabic statute references with English company names should be reviewed by counsel in rendered HTML, not only in the translation memory tool, because line breaks can change how readers interpret clause boundaries.
If you want assists inside Loco that respect RTL constraints while filling gettext at scale, the Loco AI Auto Translator WordPress extension for RTL-aware WooCommerce gettext and layout-safe batches keeps linguistic throughput and bidirectional discipline together in the same operational loop your team already trusts.



Hey everyone, just wanted to share how helpful the RTL Layout Sanity Checks guide was after translating my WooCommerce store to Arabic. as someone who sells local tour experiences online, I was really nervous about how my pages would look with both English and Arabic text mixed together. this guide caught so many little things I would've missed like backwards punctuation and misplaced question marks. the tip about checking narrow widths first was a really helpful
Finally a guide that actually gets the mess of RTL WooCommerce stores. That part about mixed direction islands? saved me hours SKUs and URLs wrecking my Arabic layouts was making me lose it
Saved me from RTL disasters. Worth every penny.
Just used this for my Arabic WooCommerce store, and wow checkout numbers actually line up right now. No more weird pricing glitches or backwards phone fields. Saved me hours of manual fixes