Localization Testing Checklist — Quality Assurance in Translation

Localization Testing Checklist — Quality Assurance in Translation

Localization testing is a type of software testing to ensure that a product or application is adapted to meet the linguistic, cultural, and regional requirements of a specific target market. This type of testing verifies that the software is correctly adapted to the needs and expectations of local users.

Localization testing involves checking various elements such as language translation, date and time formats, currency, symbols, icons, and graphics to ensure they are appropriate for the targeted market. Localization testing is essential to ensure software quality and usability in different markets and to avoid cultural misunderstandings or linguistic errors.

Best practices and language quality assurance tips from Alconost

As a reputable company specializing in localization for software, games, and websites, Alconost has extensive experience in Language Quality Assurance (LQA) and Language Quality Testing (LQT). Below is a list of the best practices we’ve developed to ensure that your product is ready for LQT.

  • Have your translations done by native speakers. Alconost always works with native-speaking translators, as they have a better grasp of linguistic nuances, grammar, and the local mentality. Employing native speakers can help ensure that the translation is accurate, appropriate, and looks natural to the target audience. You can read about how we helped one mobile gaming company—Wildlife studios—localize and test game apps in 12 different languages, which increased their organic traffic several times over.

  • Find and correct oversights such as untranslated or incorrectly translated text, inconsistent or inappropriate use of terminology, and errors in grammar, spelling, and punctuation. Localization testing is less of a technical procedure: it is conducted either by going through the product using scripted scenarios provided, or by checking screenshots of the product in use.

  • Check for UI issues—for example, when localizing from English, keep in mind that text in some target languages (such as German) may not fit in the space originally allocated. Also, make sure the date and time is displayed in the local format. One company we’ve assisted with this is Speakap, a branded communication platform, whom we helped to test their website localization and implement its functionality in 3 languages.

  • Perform functional testing. While localization testing does indeed help to detect critical functional bugs, localization testers simply don’t have the technical background to alter the code and get the product working properly. Check with developers and engineers who can perform functional testing to ensure that the translated content is correctly displayed and functional. The localized product has to work smoothly in every language.

  • Use human review for final quality assurance. Without native speakers you can never be sure whether your product is truly ready to be introduced to a foreign audience. All translations by the Alconost team are done by real native speakers and are checked by human review for final quality assurance, to ensure that the translation looks natural to locals.

If you're looking for more tips and best practices, be sure to check out our comprehensive guide on the topic here.

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How is localization testing different from functional testing?

Localization and functional testing are two types of software testing that serve different purposes. The primary objective of functional testing is to ensure that the software product or application functions correctly in accordance with its specifications. In contrast, the primary goal of localization testing is to ensure that the software product is adapted to meet a specific target market's linguistic, cultural, and regional requirements.

Functional testing ensures the proper performance of an application feature, while localization testing focuses on checking how content will be perceived. Functional testers must have a solid technical background, attention to detail, and time management skills. Most functional testing is not done by native speakers with a thorough understanding of the target languages, so it’s crucial to include native speakers in the localization testing process.

Conversely, localization testing doesn't require technical expertise, but it does involve a careful reading of the content to identify translation errors, consistency issues, and UI problems. Both types of testing intersect when localization testing detects critical functional bugs.

Who would benefit from localization testing?

Localization testing is crucial for any software product or application targeting a specific geographic location or market. We’ve already posted an article about who can benefit from localization testing. Let’s briefly revisit the highlights:

1. Business owners and founders

Business owners and founders are the primary beneficiaries of localization testing. Localization testing ensures that the software is correctly adapted to look natural for local users. By performing localization testing, business owners can ensure that their software product is functional, reliable, and meets the user's requirements in different markets.

2. Community managers and customer support departments

Community managers and customer support teams benefit from localization testing as it lets them form a community and reduce negative feedback from the target market. It helps them to understand the local market's preferences, user behavior, and customer needs, which in turn allows them to develop effective business and community building strategies.

3. Localization teams

Localization teams translate content and ensure that it is adapted to the local culture and language. Localization testing helps these teams ensure that the translation looks accurate and organic. It also lets them verify that the localized content is correctly displayed and contains no errors or inconsistencies.

4. End users

The ultimate beneficiaries of localization testing are end users. Localization testing ensures that the software is tailored to their needs, preferences, and cultural sensitivities. This, in turn, enhances the user experience, improves user adoption, and increases customer satisfaction.

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Conclusion

Localization testing and language quality assurance are essential for anyone involved in software development, marketing, and sales on the global market. They help to ensure that the software is adapted to meet the local market's linguistic, cultural, and regional requirements, thereby improving the product's quality and increasing its acceptance in the target locale.

For almost 20 years Alconost has been developing best practices and language quality assurance tips to ensure high quality translations that meet the linguistic, cultural, and regional requirements of the target market. These best practices and tips will help your business to localize and test software, to be certain that it is ready for launch on the new market.


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Our Work

See how we help global companies scale their reach.

JetBrains
Software

JetBrains

1,000,000+ words localized into JA, ES, ZH-CN, KO, PT-BR, FR, TR, CS, RU

Microsoft MakeCode
Software

Microsoft MakeCode

Localization of Microsoft MakeCode

TikTok
Mobile Apps

TikTok

100,000+ words localized into NL, FIL, FI, FR, DE, HE, IT, ES, SV, FR-CA, ES-MX for ByteDance

Viber
Mobile Apps

Viber

Localization of Viber messenger

Read case study
GitHub
Software

GitHub

Translation of GitHub guides and materials

Zendesk
Software

Zendesk

Zendesk Knowledge Base localization for multilingual customer support

Read case study
Airalo
Mobile Apps

Airalo

25,000 words localized into AR, ZH-CN, CS, FIL, FR, DE, EL, HE, HI, IT, JA, KO, PL, PT-BR, RU, ES-419, TH, TR, UK

Choco
Mobile Apps

Choco

15 000+ words localized into JA, KO, VI-VN, IT, PL, NL, PT-BR, CS, CA, ZH-CN

Bitrix24
Websites

Bitrix24

100 000 words and counting localized into ES, PT-BR, JA, ZH-CN and 11 more

Harvard University
E-Learning

Harvard University

Localization of online courses for Harvard University

Xsolla
Games

Xsolla

Localization of Xsolla products

Read case study
SafetyCulture
Software

SafetyCulture

5 000–8 000 words per month localized into JA, PL, TH, TA, SV-SE, VI, UK, ID, HI, KO, NO, PT-PT, RO, RU, TR, AR, BN, ZH-CN, ZH-TW, DA, FI, IT, DE, NL, FR, ES-ES, PT-BR, ES-MX

Veriff
Software

Veriff

12 000 words per month localized into ES-MX, ES-419, SO, SI-LK, VI, SL, SK, SR-CS, RO, PT-PT, PL, MS, MK, LT, LV, JA, HI, DE, KA, FR, FIL, NL, ZH-TW, ZH-CN, CA, BG, BN, ES-ES, PT-BR

Bitrix24 / Voice Responses
Media

Bitrix24 / Voice Responses

into DE, EN, ES, PT-BR, RU, UK

Read case study
DocuWare
Software

DocuWare

90,000 words localized into 23 languages for cloud & on-premises document management

Gartic Phone
Games

Gartic Phone

5 000 words localized into JA, AR, TH, CS, ID, FR, DE, ZH-CN, IT, NL, SV, RO, KA, FA, AZ

Bandsintown
Software

Bandsintown

Localization of Bandsintown app

Read case study
Aviasales
Websites

Aviasales

100,000 words localized into 12 languages for flight search platform

Endomondo
Software

Endomondo

10 000 words and counting localized into CS, HI, NO, TR and 12 more

Liferay
Software

Liferay

Localization of Liferay Platform

BattleTech
Games

BattleTech

Localization of the Battletech game

Goat Simulator
Games

Goat Simulator

Localization of the Goat Simulator game

Stellaris
Games

Stellaris

Localization of the Stellaris game

Movavi
Mobile Apps

Movavi

100,000+ words localized into 20+ languages for video editing software

Parimatch
Software

Parimatch

200,000+ words localized into FR, FR-CA, DE, HI, IT, JA, PL, PT, PT-BR, ES, ES-MX, TR for betting platform

Prequel
Mobile Apps

Prequel

Expanded Top-10 photo editing app to 100M+ Gen Z users worldwide

Ultimate Guitar
Mobile Apps

Ultimate Guitar

4,000 words localized into ES with LQA for Muse Group's guitar app

Wildlife Studios
Games

Wildlife Studios

75 000+ localized into FR, DE, IT, KO, RU, TR, PT-BR, ES-MX, UK, RO, AR

App in the Air
Mobile Apps

App in the Air

500,000+ words localized into PT-BR, PT, NL, KO, HI, FR, ES, SV, IT, TR, JA, AR, DE, ZH-CN, ZH-TW

Apptweak
Mobile Apps

Apptweak

100,000 words localized into JA, KO, ZH, FR for ASO analytics platform

Discourse
E-Learning

Discourse

55,000 words localized into ZH-CN, PT-BR, IT, FR, DE, AR, FI, JA, ES for open-source forum platform

Gcore
Software

Gcore

100 000+ words localized into ZH-CN, DE, ES, PT-BR

Grand Hotel Mania
Games

Grand Hotel Mania

100,000+ words localized from RU into 20 languages for hotel simulator game by Deuscraft

IllFonic
Games

IllFonic

IllFonic Inc.

InterSystems
E-Learning

InterSystems

550+ words localized into ES, FR, PT-BR, ZH-CN, JA

Kissflow
E-Learning

Kissflow

140,000+ words localized into IT, TH for low-code/no-code work platform

Klondike
Games

Klondike

50,000 words localized into DE, ES, IT, FR, PL, NL, JA, KO, ZH-CN, ZH-TW, PT-BR for VIZOR APPS

Clue
Software

Clue

Localization of Clue mobile app

Read case study
Dacadoo
Mobile Apps

Dacadoo

100,000+ words localized into 17 languages for digital health platform

My Cafe
Games

My Cafe

400 000 words and counting localized into FR, ES, PT-BR, KO and 6 more

Party Hard
Games

Party Hard

Localization of the Party Hard game

Planner 5D
Mobile Apps

Planner 5D

20,000 words localized into 24 languages for home design app

Punch Club
Games

Punch Club

20 000 words localized into ZH-CN, PL

Read case study
RICOH360 Tours
Software

RICOH360 Tours

18 000 characters localized into Japanese –> English, German, French, Spanish, Dutch

Sumsub
Software

Sumsub

7,000 words localized into 28 languages for identity verification platform

Transporeon
Software

Transporeon

50,000 words localized into 18 languages for logistics visibility platform

Aktiia
Websites

Aktiia

21,000 words localized into FR, DE, IT for blood pressure monitoring startup

Awarefy
Mobile Apps

Awarefy

30 000 characters localized into Japanese –> English

Baby Tracker
Mobile Apps

Baby Tracker

5 000 words localized into ES-LA, PT-BR, DE, UK

Circuit
Mobile Apps

Circuit

5,000 words localized into 30+ languages for delivery route planning app

CSAT
Software

CSAT

200 000+ words localized into AR, HE, IT, KO, PL, PT-BR, PT, TR, ZH-CN

Driivz
Software

Driivz

1 300 words localized into HR, CS, ET, FI, FR, FR-CA, DE, EL, HU, IS, IT, LV, LT, NO, PL, RO, SK, SL, ES-ES, SV

Foodback
E-Learning

Foodback

50,000 words localized into 12 languages for restaurant feedback platform

Gentler Streak
Mobile Apps

Gentler Streak

2 000 words per month localized into FR, DE, IT, ZH, ZH-HK, JA, KO

Harvest Land / Paris: City Adventure
Games

Harvest Land / Paris: City Adventure

200,000+ words localized from RU into 8 languages for Mysterytag games

Harvest Land
Games

Harvest Land

2 000 words per month localized into RU → EN, ES, PT-PT, FR, IT, DE, KO, JA, ZH

Hotel Life
Games

Hotel Life

12,000 words localized into 10 languages for hotel simulation game by Eidolon

HUB Parking
Software

HUB Parking

62,000 words localized into RU for smart parking solutions

Keenetic
Websites

Keenetic

30,000 words localized into PL, ES, FR, DE, SV, PT, IT for Wi-Fi router manufacturer

Charm Farm
Games

Charm Farm

Localization of Charm Farm Game

Read case study
Zombie Castaways
Games

Zombie Castaways

Localization of the Zombie Castaways game

Meisterplan
Software

Meisterplan

74,500 words localized into ES, FR, DE for project portfolio management

Onde
Mobile Apps

Onde

up to 1 000 words per month localized into SV, RW, DA, SQ, PL, KM, ET, MY, ZH-HANS, FI, DE, LV, HE, NL, HR, SK, NO, LT, IT, TH, SO, ID, IS, UR-PK, ZH-HANT, CS, UK and 10 more

OpenProject
Software

OpenProject

1 000+ words per month, up to 150 000 localized into FR, ZH-CN, ES-ES, IT, PL, PT-PT, PT-BR, KO, UK

Pillow
Software

Pillow

100,000+ words localized into 13 languages for sleep tracking app by Neybox

Playwing
Games

Playwing

40 000+ words localized into AF, AR, BN, MY, HR, CS, NL, ET, FR, KA, DE, EL, HU, ID, MS, PL, PT, RU, SK, ES, SV, TH

Clash of Kings
Games

Clash of Kings

Proofreading of in-game text for Clash of Kings

Read case study
Soundiiz
Software

Soundiiz

15,000+ words localized into 14 languages for music playlist transfer app

Speakap
Mobile Apps

Speakap

5,000 words localized into DE, NL, ES for employee communication app

Stripo
Websites

Stripo

25 000 words localized into PT-BR, TR, CS, FR, DE, IT, ES, PL, ZH-TW, NL, SL

Sufio
Mobile Apps

Sufio

3 000 words localized into FR, DE

Tonsser
Mobile Apps

Tonsser

40,000 words localized into ES-US, PT, SV, DE for football community app

Vizor
Games

Vizor

into ES-ES, NL, PL, ZH-CN, ZH-TW, PT-BR, IT, KO, FR, DE

Read case study
Alvadi
E-Commerce

Alvadi

Multilingual SEO for automotive supplier expanding to 30+ markets

BoxHero
Software

BoxHero

10000 localized into ES-419, ZH-CN, ZH-TW

Epic Roller Coasters
Games

Epic Roller Coasters

4,000 words localized into ZH-CN, FR, DE, JA, KO, RU, ES for VR game by B4T Games

Dating Apps Bundle
Mobile Apps

Dating Apps Bundle

50,000 words localized into 36+ languages for Red Panda Labs dating apps

Face Yoga
Mobile Apps

Face Yoga

2,000 words localized into ES-419, PT-BR for skincare app by Tepluhab

Forest Bounty
Games

Forest Bounty

10,000 words localized from RU/EN into ES, FR, PL, PT-BR for VigrGames

Game Localization — MTPE
Games

Game Localization — MTPE

Anonymized case — under NDA

Read case study
HUD App
Software

HUD App

10,000 words localized into 18 languages for dating app

DreamCommerce
E-Commerce

DreamCommerce

Localization of DreamCommerce Platform

Read case study
Jooble
E-Learning

Jooble

10 000 words localized into ES, PT, KO, JA and 11 more

Read case study
Smarty CRM
Software

Smarty CRM

Localization of Smarty CRM platform

Read case study
Targetprocess
Software

Targetprocess

Localization of Targetprocess platform

Mahjong Treasure Quest
Games

Mahjong Treasure Quest

30 000 words localized into EN → JA, MTPE: EN → PL, NL, KO, ZH-CN, ZH-TW, DE, FR

Primagest
Websites

Primagest

80 000 characters localized into JA → EN, ZH

Raymy
Software

Raymy

80 000 characters localized into Japanese –> English, Chinese (traditional),Vietnamese, Hindi

Sana Commerce
E-Commerce

Sana Commerce

Bi-weekly B2B e-commerce platform updates in 22 languages

Swappy Dog
Games

Swappy Dog

25,000 words localized from RU into 19 languages for match-3 game by Funmatica

Swoo
Mobile Apps

Swoo

30,000 words localized into ES, IT, PT for digital wallet app by CARDS/MOBILE

EnjoyGaming
Games

EnjoyGaming

500 words per month localized into DE, ES, FR, HI, IT, JA, KO, PT, PT-BR, RU, SV, TR, UK

2Solar
Software

2Solar

10,500 words localized into DE for solar software platform

24 Hour Home Care
Software

24 Hour Home Care

2,590 words localized into ES-419 for healthcare staffing company

ActiveMap
Software

ActiveMap

18 000 words localized into AR

Adizes Institute
E-Learning

Adizes Institute

5,850 words localized into HE for leadership consulting platform

AI Chat Smith
E-Learning

AI Chat Smith

1 500 words per month localized into ES, JA, RU, ZH, DE, FR, PT-BR

Alice VR
Media

Alice VR

8 phrases localized into CA, EN, ES, RU

Read case study
Appewa
E-Learning

Appewa

100+ words localized into 20 languages for language learning app by Lithium Lab

Associations
Games

Associations

3 000 words localized into TR, PL, SV-SE, NO, DA, CS, SK, HU, JA, KO, and 7 more

Aviloo
Software

Aviloo

5,000 words MTPE from DE into DA, NL, FR, IT, SV, NO for EV battery diagnostics

Berry Factory Tycoon
Games

Berry Factory Tycoon

1 500 words every two months localized into RU → EN, KO, JA

BestChange
Websites

BestChange

2 000 words per month localized into NL, PL, SV

Blink
E-Learning

Blink

32 300 words localized into FR

Bunny Boom
Games

Bunny Boom

3 000 words localized into DE, ES, FR, IT, JA, KO, PT-BR

Life is Feudal
Media

Life is Feudal

Character voiceovers for Life is Feudal: Your Own

Read case study
Conf.app
Software

Conf.app

4,500 words localized into IT, ZH-CN, PT-BR, DE, ES for event management app

Cosmos VR
Media

Cosmos VR

2 000 words localized into CA, DE, EN, ES

Read case study
Darksy Cleaner
Mobile Apps

Darksy Cleaner

1,400 words localized into 9 languages for iOS photo cleaner app

Days After
Games

Days After

500 words every 1.5 months localized into RU → EN, PT-BR, ES; EN → DE, FR, KO, AR, ZH-TW, ZH-CN, NO, PL, TH, CS, JA and 10 more languages on demand

Dople
Software

Dople

11 500 characters with space localized into KO → JA

eSIM Provider
Websites

eSIM Provider

around 30 000 words when requested localized into SQ, AR, HU, IT, IS, NL, FR, DE

EXR
Games

EXR

12 000 words localized into ES, FR

GoodCrypto
Software

GoodCrypto

2 000 words per month localized into AR, ZH, FR, DE, ID, IT, KO, PT-BR, ES, TR, VI

Haiku
Games

Haiku

10 000+ words localized into ES-419, PT-BR, DE, JA, ZH-CN

Impulse
E-Learning

Impulse

Impulse - Brain Training

IQ Dungeon
Games

IQ Dungeon

IQ Dungeon - Riddle Solving RPG

Knights and Brides
Games

Knights and Brides

Knights & Brides

Lexilize
E-Learning

Lexilize

7 000 words localized into FR

Darklings
Games

Darklings

1 000 words localized into JA, ZH, ES, RU, IT, FR, DE, PT, KO

Kill Shot Bravo
Games

Kill Shot Bravo

Localization of Kill Shot Bravo

Next Stop
Games

Next Stop

7 500 words localized into FR, DE, EN, JA

EcoCity
Games

EcoCity

Localization of the EcoCity game

Forced Showdown
Games

Forced Showdown

Localization of the Forced Showdown game

Minion Masters
Games

Minion Masters

Localization of the Minion Masters game

Outpost Zero
Games

Outpost Zero

Localization of the Outpost Zero game

Streets of Rogue
Games

Streets of Rogue

Localization of the Streets of Rogue game

Tamadog
Games

Tamadog

Localization of the Tamadog game

Valentine's Day
Games

Valentine's Day

into DE, FR, IT, ES, PT-BR

Mimic Logic
Games

Mimic Logic

13 000 characters localized into JA → EN, ZH-CN

Mini Golf 100+
Games

Mini Golf 100+

10 000 characters localized into Japanese –> English, German, French, Spanish, Korean, Chinese (tw), Chinese (zh), Portuguese (Brazil)

Mini Mini Farm
Games

Mini Mini Farm

8 500 characters localized into Japanese –> English

mod.io
Games

mod.io

500 words localized into ZH-TW, ZH-CN, DE, IT, JA, KO, PL, RU, ES

MySignature
Websites

MySignature

1 500 words per month localized into IT, FR, NL, FI, PL, DE, ES, PT

Parasite Days
Games

Parasite Days

70 000 characters localized into Japanese –> English

PDIS
Software

PDIS

2 346 characters with space localized into KO → EN

PosterMyWall
E-Learning

PosterMyWall

1 000 words per month localized into ZH-HANS, DA, NL, FR, DE, ID, IT, PL, PT, RU, ES, TH

Prospre
Software

Prospre

7 000 words localized into ZH-CN, FR, DE, IT, JA, PT-BR, ES-419

Ruins Magus
Games

Ruins Magus

38 000 characters localized into Japanese –> English

Samedi Manor
Games

Samedi Manor

2,000 words localized from RU into 7 languages for idle game by Black Caviar Games

Soltec Health
E-Learning

Soltec Health

17 000 words per 6 months localized into JA

Soma Development
Software

Soma Development

8 000 words localized into AR, ZH-CN, FR, DE, ID, IT, JA, PT, RU, VI, ES-419

Sonnet of Wizard
Games

Sonnet of Wizard

224 261 characters localized into Japanese –> English

Sportplus
Websites

Sportplus

800 words localized into AR, HI

Hotel Project
Games

Hotel Project

3,622 words localized into PT-BR for merge game by Next Epic

Tovie AI
Software

Tovie AI

4,800 words localized into ES, PT-BR for conversational AI platform

Ultight
Software

Ultight

5 046 characters with spaces localized into KO → EN

Underground Waifus
Games

Underground Waifus

4 300 words localized into JA, ZH-CN, KO, FR, IT, DE

UNNI
Software

UNNI

15 000 words per month localized into TH

Vlad & Niki
Games

Vlad & Niki

15,000 words localized into 10 languages for kids claymation game by RUD present

Kerish Doctor
Media

Kerish Doctor

Voiceovers for the Kerish Doctor software

Read case study
Welcome Bot
Software

Welcome Bot

2 000 words localized into UK, LT, AR, ES, FR, DE, PT, IT, PL, HE, ID, TR, HI, VI, MS, TH, CS, NL

WRD
Media

WRD

WRD – Learn Words App Voiceover

Read case study
Azur Games
Games

Azur Games

200 – 500 words per order localized into ID, PL, IT, TR, ZH-CN, ZH-TW, KO, PT-BR, JA, FR, ES, DE, TH, HI

Character Bank
Software

Character Bank

Localization for Character Bank software platform

Coffee Break
Software

Coffee Break

Localization for Coffee Break software platform

Google
Software

Google

Localization for Google

GROOVE
Software

GROOVE

Localization for GROOVE X

Hakali
Software

Hakali

Localization for Hakali

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