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Certified translation agency Our ISO certifications

Only a handful of certified translation agencies worldwide hold four ISO standards at once. tolingo is one of them: a certified translation agency audited by TÜV Süd and LinquaCert. Here you will find every current certificate for direct download, with the scope of each and a short explanation of the standard. Pick the certificate you need below, for a tender, a supplier approval or a compliance file.

Audited by TÜV Süd and LinquaCert · unbroken since 2015 · 4 ISO standards active
ISO 9001 Quality Management ISO 27001 Information Security ISO 17100 Translation Services ISO 18587 Post-Editing Four ISO certifications
An overview of tolingo's four active ISO certifications with their official certification badges: ISO 17100 for translation and ISO 18587 for post-editing (both LinquaCert, combined badge), ISO 9001 for quality management and ISO 27001 for information security (both TÜV Süd). ISO 17100 Translation LINQUACERT · SINCE 2015 ISO 18587 Post-Editing LINQUACERT · SINCE 2022 ISO 9001 Quality Management TÜV SÜD · SINCE 2016 ISO 27001 Information Security TÜV SÜD · SINCE 2018

Clients who rely on certified quality

tolingo reference clients: logos of companies such as Amazon, Audi, Allianz, Vodafone, TUI, Novartis, idealo and zalando.
4× ISO Actively certified to international standards
2× TÜV Süd ISO 9001 + ISO 27001 audited
2× LinquaCert ISO 17100 + ISO 18587 audited
since 2015 Unbroken, every audit passed
tolingo's certifications at a glance
  • Scope: specialist translation, workflow management and IT platforms for translation in 220+ language pairs, across every field.
  • Certification bodies: TÜV Süd (for ISO 9001 and ISO/IEC 27001) and LinquaCert (for ISO 17100 and ISO 18587), both operating under European accreditation rules.
  • Audit history: first certified in 2015 (ISO 17100), annual surveillance audits ever since, re-certification every three years, unbroken since the first certification.
  • Downloads: all four current certificates are ready for direct download below. Suitable for tenders, compliance files and supplier approvals.

Every certificate at a glance
Direct downloads for tenders and compliance files

The four current certificates as a single download overview. For tenders or supplier approvals, we can also send a combined PDF pack by email on request.

ISO-Certificate 17100 for tolingo translation services
ISO 17100
Translation services
LinquaCert · since 2015
ISO-Certificate 18587 for tolingo translations services
ISO 18587
Post-editing of machine translation
LinquaCert · since 2022
ISO-Zertifikat 9001
ISO 9001
Quality management
TÜV Süd · since 2016
ISO/IEC 27001:2022 Certificate, valid until 14.10.2027
ISO 27001
Information security
TÜV Süd · since 2018
Pack by email

If you need the four certificates as a single combined PDF (for a tender annex, say), we send the pack within ten minutes. A short email to service@tolingo.com or via the contact form is all it takes.

What an ISO certification actually means
Audit process, validity period, consequences

ISO stands for the International Organization for Standardization, founded in 1947 and based in Geneva. It publishes international standards for products, processes and management systems. An ISO certification is not issued by ISO itself, but by accredited certification bodies that check regularly whether a company meets the standard in question.

Certification runs in three steps. In the first audit, the main audit, the certification body checks the entire set of processes, documentation and records against the standard. A passed audit leads to the certificate being issued, usually valid for three years. In the two following years, surveillance audits take place, examining individual aspects on a sample basis. After three years, a re-certification is due, which again amounts to a full main audit.

For tolingo, that means at least four external audits a year, spread across all four standards. Audits can be announced or unannounced. If the certification body finds non-conformities that cannot be remedied, the certificate can be withdrawn. Our internal processes are built so that compliance with the standard stays traceable at all times.

The four certificates in detail
Key facts, scope, what the standard requires, download

Each block covers the key facts, the exact scope, what the standard requires and the download link to the current certificate.

ISO 17100: translation services

Key facts

First certified: August 2015 · Certification body: LinquaCert · Audit cycle: annual surveillance audit, re-certification every three years

Scope: quality-assured specialist translation and workflow management for technical documentation, legal texts, finance and medical content, marketing and corporate communications, and software, multimedia and website localisation.

Certificate: Download the current certificate →

What the standard requires: ISO 17100 is the international quality standard for translation services and replaced the earlier DIN EN 15038. It sets minimum qualifications for translators (a degree in translation or at least five years of professional experience), requires the four-eyes principle through a second specialist, and governs project management, resource availability, client communication and feedback loops. More on the standard in the glossary.

ISO 18587: post-editing of machine translation

Key facts

First certified: August 2022 · Certification body: LinquaCert · Audit cycle: annual surveillance audit, re-certification every three years

Scope: full human post-editing of machine translations (machine translation post-editing, MTPE).

Certificate: Download the current certificate →

What the standard requires: ISO 18587 complements ISO 17100 for the special case of machine translation. It sets out the qualifications post-editors must have, how post-editing is documented, and the minimum requirements for output quality. It matters for high volumes with a manageable risk profile. More on the standard in the glossary: MTPE / PEMT.

ISO 9001: quality management system

Key facts

First certified: September 2016 · Certification body: TÜV Süd · Audit cycle: annual surveillance audit by independent TÜV Süd auditors

Scope: specialist translation and workflow management for technical documentation, legal texts, finance and medical content, marketing and corporate communications, and software, multimedia and website translation.

Certificate: Download the current certificate →

What the standard requires: ISO 9001 is the most significant standard in quality management, nationally and internationally. It calls for a process-oriented approach, documented procedures in every department, continuous improvement, risk analysis and a focus on the customer. It covers producing the translation as much as every other touchpoint: quoting, project coordination, complaint handling, billing, internal reporting. For tolingo clients, that means consistent service quality along the whole value chain, from quote to invoice.

ISO/IEC 27001: information security management system

Key facts

First certified: September 2018 · Certification body: TÜV Süd · Audit cycle: annual surveillance audit by independent TÜV Süd auditors

Scope: provision of IT systems and IT platforms for translation and translation-related services.

Certificate: Download the current certificate →

What the standard requires: ISO/IEC 27001 is the world's leading standard for information security management systems (ISMS). It defines the technical and organisational requirements for protecting confidential data: physical access controls, encrypted data transfer, documented access rights, regular staff training, contingency management. In the translation industry, tolingo was an early adopter of this standard, which many agencies still lack today. It matters for GDPR-compliant order handling.

Certified without a gap since 2015
The audit history at a glance

Since the first certification in August 2015, tolingo has been certified to at least one ISO standard without interruption, adding three further standards along the way. Annual surveillance audits by TÜV Süd and LinquaCert, re-certification every three years. Every audit so far has been passed, with no break in certification status.

Audit timeline of tolingo's ISO certifications from 2015 to 2026: ISO 17100 first certified in 2015, ISO 9001 added in 2016, ISO 27001 added in 2018, ISO 18587 added in 2022. Annual audits by TÜV Süd and LinquaCert. AUDIT HISTORY · 2015 TO TODAY 2015 2016 2018 2022 2026 ISO 17100 Translation LinquaCert ISO 9001 QM system TÜV Süd ISO 27001 Info security TÜV Süd ISO 18587 MTPE LinquaCert ACTIVE Annual surveillance audits · re-certification every 3 years

Beyond the ISO standards
Unbroken re-certification, GDPR, sector-specific standards

ISO certifications are the foundation, but not the whole picture. Four further anchors that round out tolingo's compliance profile:

Unbroken re-certification

Since the first certification in 2015, tolingo has passed every re-certification and every surveillance audit, with no break in certification status. With four ISO standards running in parallel, each on its own audit cycle, that means at least four external checks a year, sustained for more than a decade.

GDPR-compliant processes

Beyond ISO 27001, tolingo works to GDPR requirements throughout: documented data-processing agreements with every translator, EU servers, data-deletion policies. More on this: GDPR translations.

Sector-specific standards

For regulated industries such as medicine and life sciences or the defence industry, we build the extra requirements of your regulatory environment (MDR, IVDR, classified-information rules) into our processes, without certifying those standards ourselves.

35-day correction window

A contractually assured 35-day correction window on every specialist translation to ISO 17100. The industry norm is 14 days. Details on the quality page.

Common questions about the certifications
Audit process, validity, compliance, languages

Which certification body checked which standard?
The translation-specific standards ISO 17100 (translation) and ISO 18587 (post-editing) are certified by LinquaCert, a certification body specialising in language services. The company-wide management standards ISO 9001 (quality management) and ISO/IEC 27001 (information security) are certified by TÜV Süd.
How long are the certificates valid?
Three years. Once they expire, a re-certification with a fresh main audit follows. In the two intervening years, surveillance audits take place, checking on a sample basis whether the quality system still meets the standard's requirements. At tolingo, the system has run without a gap since the first certification in 2015.
What happens if an audit is not passed?
Where non-conformities are found, the certification body distinguishes between minor observations (to be remedied within a documented deadline) and major non-conformities, which can lead to the certificate being suspended. At tolingo there have been no major non-conformities so far; every audit has been passed.
Can I use the certificates as an annex to a tender?
Yes, that is exactly what they are for. The certificates carry the certificate number, the validity, the scope and the certification body's logo. They are sufficient for most supplier questionnaires and procurement documents. If further evidence is needed (audit reports or Statements of Applicability, say), we provide these on a confidential basis.
Do the certificates also cover translation into rare languages?
Yes. The scope of the ISO certificates is worded independently of language and covers every language pair tolingo works in. That is 220+ language pairs, from English to rare languages and language variants. The condition is that qualified native-speaker specialist translators are available for the language in question.
Are there ISO standards tolingo is not certified to?
Yes. We are not certified to sector-specific standards such as ISO 13485 (medical devices) or industry-specific requirements from the pharmaceutical or aviation sectors. We build the requirements of those sectors into our processes (for example MDR-compliant translations), but do not certify these industry-specific standards ourselves.
Can you supply the certificates in English?
Yes. The certificates from TÜV Süd and LinquaCert are available in German and English. For international tenders, we send the English version on request. Contact: service@tolingo.com.

Certificates for your compliance files?

If you need documents for a specific tender, supplier approval or internal review, we send the right pack within ten minutes.

Reply in 10 minutes · also available in English
Written by
tolingo editorial team
Quality Management team
Last updated: 17 July 2026