Triple ISO-certified translation agency for Life Sciences & Pharmaceuticals Software, AI & Gaming FinTech, Crypto & Financial Legal, Patents & Intellectual Property Energy, Oil/Gas & Utilities Defence & Aerospace
Portuguese (Portugal, Brazil & Africa) and European languages
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and several of the world's Top 100 LSPs.
SMARTIDIOM is a Portuguese translation and localisation company founded in 2012, with offices in Leiria and Porto, certified to ISO 9001, ISO 17100 and ISO 18587. It has been listed in the Slator Boutique Language Service Provider Index since 2024, is a member of ELIA (European Language Industry Association), and works in over 100 languages and more than 250 language pairs for clients in 37 countries.
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Brands that place their trust in us
Awards and certifications
Why do leading brands choose SMARTIDIOM?
We de-risk your global content.
We’ve delivered audit-ready multilingual content since 2012.
Certified quality that passes audits
Audited, best-practice workflows for project governance, linguist qualification, quality assurance and data security.
AI-powered, human-led
We pair advanced MT with ISO 18587 human post-editing by subject-matter linguists.
Embedded in your stack
We plug into your TMS/CMS and developer workflows (e.g. Trados Enterprise, XTM, memoQ), so you get capacity without the friction.
Industry-specific expertise
Our native linguists are subject-matter experts in six high-impact sectors, ensuring your terminology is accurate every time.
Consistent delivery at scale
98%+ on-time across thousands of projects, according to our 2026 internal data. Whether it’s a million-word technical rollout or an urgent marketing campaign, we scale our team in hours, not weeks.
More than a vendor: a partner
We work in partnership. You can count on full transparency, shared KPIs, joint planning and continuous improvement throughout our collaboration.
SPECIALISED HUMAN TRANSLATION
Because in regulated industries, “close enough” is never “good enough”. We translate with surgical precision – and deep sector expertise.
- Industry-specific technical translation
- Certified & legal translation
- Website & software localisation
- Review & revision
- Independent LQA
MACHINE TRANSLATION & AI
Machine translation and AI speed matter. But so does quality. Our human-in-the-loop AI workflows give you both – backed by ISO 18587 certification.
- ISO 18587-certified human MTPE
- Custom MT and NLP model training
- Language data & annotation
- Automated LQA
MULTIMEDIA & ACCESSIBILITY
Your message, heard and understood – in every format, every voice, every language. Fully localised. Fully inclusive.
- Professional dubbing & voiceover
- Subtitling & captioning (SDH)
- Audio transcription
- Sign language interpreting
- On-site & remote interpreting
- Video localisation
MARKETING STRATEGY
Going global doesn’t mean sounding generic. We help you stay bold, on-brand and culturally sharp – anywhere in the world.
- Global content & multilingual strategy
- Social media content creation
- Transcreation & creative copy adaptation
- International SEO & SEM
- Digital campaigns & multicultural Ads
- Market entry & cultural consulting
DESIGN & BRANDING
Great design travels. We ensure your brand looks just as powerful – and compliant – whether in Tokyo, Paris or São Paulo.
- Creative brand visual identity
- Graphic design & Illustration
- Multilingual desktop publishing (DTP)
- UI & UX localisation
- Packaging & labelling design
- Brand style guide development
SPECIALISED HUMAN TRANSLATION
Because in regulated industries, “close enough” is never “good enough”. We translate with surgical precision – and deep sector expertise.
MACHINE TRANSLATION & AI
Machine translation and AI speed matter. But so does quality. Our human-in-the-loop AI workflows give you both – backed by ISO 18587 certification.
MULTIMEDIA & ACCESSIBILITY
Your message, heard and understood – in every format, every voice, every language. Fully localised. Fully inclusive.
MARKETING STRATEGY
Going global doesn’t mean sounding generic. We help you stay bold, on-brand and culturally sharp – anywhere in the world.
DESIGN & BRANDING
Great design travels. We ensure your brand looks just as powerful – and compliant – whether in Tokyo, Paris or São Paulo.
What our clients say about us
As for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Director of International Sales | Dyce Games
SMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
We have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Relying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
What our clients say about us
SMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
Sónia FelgueirasMarketing Manager | RocaSMARTIDIOM stands out for its high level of availability and professionalism in providing translation services. A perfect compromise between deadline, price and quality. For these reasons, we recommend SMARTIDIOM!
Sara PereiraMobile Marketing Manager | SendItAs for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Jason ExumDirector of International Sales | Dyce GamesWe have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Hanna Ben-DavidVendor Manager | QuestelOur cooperation with SMARTIDIOM has always been excellent. We get everything done promptly and the projects run smoothly. The team is friendly, professional and always helpful. We are very pleased with the linguistic quality they deliver and the timely services they provide.
Katalin VargaManaging Director | EC-InnovationsRelying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
Ariadna RequesMc-Lehm | Vendor ManagerOn top of the excellent work carried out by SMARTIDIOM, MyManagement would like to highlight the professionalism, experience, team, effectiveness, efficiency and strict compliance with deadlines as key points of excellence that make SMARTIDIOM stand out from any other company.
Rita FilipeMyManagement | Head of OperationsOur requests are always answered promptly. Having a company like yours that is able to respond swiftly to our needs is essential for us.
Miriam GomesPanidor | Marketing ManagerSMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
Sónia FelgueirasMarketing Manager | RocaSMARTIDIOM stands out for its high level of availability and professionalism in providing translation services. A perfect compromise between deadline, price and quality. For these reasons, we recommend SMARTIDIOM!
Sara PereiraMobile Marketing Manager | SendItAs for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Jason ExumDirector of International Sales | Dyce GamesWe have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Hanna Ben-DavidVendor Manager | QuestelOur cooperation with SMARTIDIOM has always been excellent. We get everything done promptly and the projects run smoothly. The team is friendly, professional and always helpful. We are very pleased with the linguistic quality they deliver and the timely services they provide.
Katalin VargaManaging Director | EC-InnovationsRelying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
Ariadna RequesMc-Lehm | Vendor ManagerOn top of the excellent work carried out by SMARTIDIOM, MyManagement would like to highlight the professionalism, experience, team, effectiveness, efficiency and strict compliance with deadlines as key points of excellence that make SMARTIDIOM stand out from any other company.
Rita FilipeMyManagement | Head of OperationsOur requests are always answered promptly. Having a company like yours that is able to respond swiftly to our needs is essential for us.
Miriam GomesPanidor | Marketing ManagerSMARTIDIOM stands out for its high level of availability and professionalism in providing translation services. A perfect compromise between deadline, price and quality. For these reasons, we recommend SMARTIDIOM!
Sara PereiraMobile Marketing Manager | SendItAs for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Jason ExumDirector of International Sales | Dyce GamesWe have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Hanna Ben-DavidVendor Manager | QuestelOur cooperation with SMARTIDIOM has always been excellent. We get everything done promptly and the projects run smoothly. The team is friendly, professional and always helpful. We are very pleased with the linguistic quality they deliver and the timely services they provide.
Katalin VargaManaging Director | EC-InnovationsRelying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
Ariadna RequesMc-Lehm | Vendor ManagerOn top of the excellent work carried out by SMARTIDIOM, MyManagement would like to highlight the professionalism, experience, team, effectiveness, efficiency and strict compliance with deadlines as key points of excellence that make SMARTIDIOM stand out from any other company.
Rita FilipeMyManagement | Head of OperationsOur requests are always answered promptly. Having a company like yours that is able to respond swiftly to our needs is essential for us.
Miriam GomesPanidor | Marketing ManagerSMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
Sónia FelgueirasMarketing Manager | RocaSMARTIDIOM stands out for its high level of availability and professionalism in providing translation services. A perfect compromise between deadline, price and quality. For these reasons, we recommend SMARTIDIOM!
Sara PereiraMobile Marketing Manager | SendItAs for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Jason ExumDirector of International Sales | Dyce GamesWe have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Hanna Ben-DavidVendor Manager | QuestelOur cooperation with SMARTIDIOM has always been excellent. We get everything done promptly and the projects run smoothly. The team is friendly, professional and always helpful. We are very pleased with the linguistic quality they deliver and the timely services they provide.
Katalin VargaManaging Director | EC-InnovationsRelying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
Ariadna RequesMc-Lehm | Vendor ManagerOn top of the excellent work carried out by SMARTIDIOM, MyManagement would like to highlight the professionalism, experience, team, effectiveness, efficiency and strict compliance with deadlines as key points of excellence that make SMARTIDIOM stand out from any other company.
Rita FilipeMyManagement | Head of OperationsOur requests are always answered promptly. Having a company like yours that is able to respond swiftly to our needs is essential for us.
Miriam GomesPanidor | Marketing ManagerSMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
Sónia FelgueirasMarketing Manager | RocaAs for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Jason ExumDirector of International Sales | Dyce GamesWe have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Hanna Ben-DavidVendor Manager | QuestelOur cooperation with SMARTIDIOM has always been excellent. We get everything done promptly and the projects run smoothly. The team is friendly, professional and always helpful. We are very pleased with the linguistic quality they deliver and the timely services they provide.
Katalin VargaManaging Director | EC-InnovationsRelying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
Ariadna RequesMc-Lehm | Vendor ManagerOn top of the excellent work carried out by SMARTIDIOM, MyManagement would like to highlight the professionalism, experience, team, effectiveness, efficiency and strict compliance with deadlines as key points of excellence that make SMARTIDIOM stand out from any other company.
Rita FilipeMyManagement | Head of OperationsOur requests are always answered promptly. Having a company like yours that is able to respond swiftly to our needs is essential for us.
Miriam GomesPanidor | Marketing ManagerSMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
Sónia FelgueirasMarketing Manager | RocaSMARTIDIOM stands out for its high level of availability and professionalism in providing translation services. A perfect compromise between deadline, price and quality. For these reasons, we recommend SMARTIDIOM!
Sara PereiraMobile Marketing Manager | SendItAs for the translation work - it was perfect. The team was very pleased, they proofread it and had few or no remarks. We have already sent the translations to our graphic designer to prepare the artwork files. We are definitely very pleased with your service and will continue to use SMARTIDIOM for all future translation needs.
Jason ExumDirector of International Sales | Dyce GamesWe have been working with SMARTIDIOM for a number of years now, and we are extremely pleased with the collaboration. The team is professional, delivers quality work and is a pleasure to work with!
Hanna Ben-DavidVendor Manager | QuestelOur cooperation with SMARTIDIOM has always been excellent. We get everything done promptly and the projects run smoothly. The team is friendly, professional and always helpful. We are very pleased with the linguistic quality they deliver and the timely services they provide.
Katalin VargaManaging Director | EC-InnovationsRelying on SMARTIDIOM is a guarantee of quality, promptness and impeccable treatment.
Ariadna RequesMc-Lehm | Vendor ManagerOn top of the excellent work carried out by SMARTIDIOM, MyManagement would like to highlight the professionalism, experience, team, effectiveness, efficiency and strict compliance with deadlines as key points of excellence that make SMARTIDIOM stand out from any other company.
Rita FilipeMyManagement | Head of OperationsOur requests are always answered promptly. Having a company like yours that is able to respond swiftly to our needs is essential for us.
Miriam GomesPanidor | Marketing ManagerSMARTIDIOM provides us with what we need and appreciate in translation services: accuracy, promptness, safety and flexibility. Therefore, it is a partner on which we will continue to rely in the future.
Sónia FelgueirasMarketing Manager | RocaSMARTIDIOM stands out for its high level of availability and professionalism in providing translation services. A perfect compromise between deadline, price and quality. For these reasons, we recommend SMARTIDIOM!
Sara PereiraMobile Marketing Manager | SendItLatest news
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Download free →Frequently asked questions (FAQ)
Certified translation, apostilles and AI: what clients ask before a quote
If your question is not here, ask us. We reply to every quote request within 24 business hours.
What does a translation cost, and is there a minimum?
Above the minimum it depends on three things: how many words the document has, which language pair it is and how specialised the content is. That is why we do not publish a single rate card. Your quote states the exact VAT treatment for your country and status.
How long does a translation take?
Certified translations add the time needed for certification, and the Hague Apostille adds time of its own. Where either applies, we say so in the quote and the dates in it reflect it. Step by step turnaround times for certified translations are on the certified translation page.
Can you certify a translation in Portugal, and will it be accepted abroad?
Whether it is accepted abroad depends on the country and on the body receiving it. Many require the certified translation plus the Hague Apostille, and we can arrange the Apostille for you. The receiving body always defines the requirement, so confirm with them before you order. We certify to the Portuguese rules; a decision taken abroad is not ours to guarantee.
Prices, turnaround times and the documents we certify most often are on the certified translation page.
Do I need a Hague Apostille?
If the destination country is not party to the Convention, the route is usually consular legalisation, unless a treaty removes the requirement. That is a different procedure, with its own timing and cost.
Inside the EU, some public documents need no Apostille at all: a document issued in one EU country and presented to an authority in another is exempt under Regulation (EU) 2016/1191. That covers birth, marriage, death, residence, parenthood, nationality and criminal record documents, among others. It does not cover qualifications such as diplomas.
The same Regulation can also remove the need for a certified translation, but only for some of these documents. For birth, a person being alive, death, marriage, registered partnership, residence and absence of a criminal record, you can ask the issuing authority for a multilingual standard form: it travels with the original as a translation aid, and it replaces the translation only where the receiving authority finds that information sufficient. There is no such form for parenthood or nationality. And where a translation is still needed, one certified by a person qualified under the law of any EU country has to be accepted across the EU. If your document is one of these, ask the receiving authority before you order a translation from us.
The Apostille is always issued in the country whose authority issued the document, never in the country it is going to. In Portugal, that is the Prosecutor General's Office.
Our guide on how to get a Hague Apostille in Portugal explains both routes step by step.
How do you validate AI and machine translation accuracy in regulated content?
The human review threshold is set per project, not per company: how much of the content can be machine-assisted, what a linguist reviews in full, and what gets a second pair of eyes. For content in clinical research, pharmaceutical regulatory affairs, law and financial services, that threshold is set conservatively, because the text is read by regulators and auditors.
We write about where the line sits in our article on how far AI should go in regulated translation.
What happens to our confidential material?
Access is limited to the linguists and project managers assigned to your project, and we only work with people who have signed a confidentiality commitment with us. If the material contains personal data, we act as your processor under Article 28 of the GDPR, and we can sign a data processing agreement covering who handles the work and where.
If your sector adds its own requirements, tell us at quote stage and we will say plainly whether we can meet them.
Do you work with translation agencies and LSPs?
We can work to your terminology, your style guides and your delivery formats. We hold ISO 9001, ISO 17100 and ISO 18587, and we can send you the certificates for your own tender file.
There is a page for LSPs that explains how the partnership works.
How do I know the quality holds up?
The certifications: ISO 9001 for quality management, ISO 17100 for translation services and ISO 18587 for post-editing of machine translation output. The system is audited twice a year: one internal audit and one external audit.
The pilot: up to 2,500 words at no cost, reviewed by someone who did not work on the translation. We agree the terms with you in writing, case by case, before we start.